{"title":"Air Compressor Filters \u0026 Water Separators","description":"\u003cdiv class=\"collection-hero\"\u003e\n\u003ch2\u003eAir Compressor Filters \u0026amp; Water Separators\u003c\/h2\u003e\n\u003cp\u003eAir compressors pull humidity from the surrounding air, and that moisture condenses into liquid water as the compressed air cools in the hose. Water in the air line damages pneumatic tools, contaminates spray finishes, and rusts internal components. A filter or water separator installed in the air line traps and drains this moisture before it reaches the tool.\u003c\/p\u003e\n\u003ch3\u003eFilter vs. dryer — which do you need?\u003c\/h3\u003e\n\u003cp\u003eAn \u003cstrong\u003einline water separator\u003c\/strong\u003e uses a baffled chamber to spin water droplets out of the air stream and collect them in a bowl you drain by pressing a button. Best for general DIY and shop use where occasional moisture is the issue.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003edesiccant dryer\u003c\/strong\u003e uses a moisture-absorbing material (silica gel or molecular sieve beads) to remove water vapor before it can condense. Best for finish work — automotive painting, fine spray coatings — where any moisture in the line ruins the result.\u003c\/p\u003e\n\u003cp\u003ePair a filter with a regulator in the \u003ca href=\"\/products\/air-compressor-hookup-kit\"\u003eAir Compressor Hookup Kit\u003c\/a\u003e. Read \u003ca href=\"\/blogs\/news\/choosing-the-right-filter-regulator\"\u003eChoosing the Right Filter Regulator\u003c\/a\u003e for a guided selection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLooking for a complete kit?\u003c\/strong\u003e Browse all \u003ca href=\"\/collections\/bundles\"\u003ePro Air Tools bundles\u003c\/a\u003e — save 8% on curated sandblasting, hookup, and detailing kits.\u003c\/p\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"CollectionPage\",\"name\":\"Air Compressor Filters\",\"description\":\"Inline air compressor filters, water separators, and desiccant dryers.\",\"url\":\"https:\/\/proairtools.com\/collections\/air-compressor-filter\",\"breadcrumb\":{\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/proairtools.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Filters\",\"item\":\"https:\/\/proairtools.com\/collections\/filters\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Air Compressor Filter\",\"item\":\"https:\/\/proairtools.com\/collections\/air-compressor-filter\"}]}}\u003c\/script\u003e","products":[{"product_id":"air-filter-regulator-compressor-oil-water-separator-combo-with-gauge","title":"Professional 2-in-1 Air Compressor Regulator \u0026 Filter - 140 PSI Aluminum Water\/Oil Separator with Gauge (AI303-R1)","description":"\u003cdiv class=\"pat-quick-facts\" data-pat-added=\"2026-05-13\" style=\"margin-bottom:18px;padding:14px 16px;background:#f8fafc;border-radius:10px;border:1px solid #e2e8f0;\"\u003e\n\u003cdiv style=\"font-size:0.85em;color:#64748b;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;margin-bottom:10px;\"\u003eQuick Facts\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;\"\u003e\n\u003cspan style=\"background:#dbeafe;color:#1e40af;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003e140 PSI \/ 10 Bar\u003c\/span\u003e\u003cspan style=\"background:#dcfce7;color:#166534;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003e1\/4\" NPT\u003c\/span\u003e\u003cspan style=\"background:#fef3c7;color:#a16207;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003eAluminum body\u003c\/span\u003e\u003cspan style=\"background:#ccfbf1;color:#115e59;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003e5-micron filter\u003c\/span\u003e\u003cspan style=\"background:#fae8ff;color:#86198f;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003eBuilt-in gauge\u003c\/span\u003e\u003cspan style=\"background:#fef2f2;color:#991b1b;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003eLe Lematec\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.95em;color:#475569;line-height:1.5;\"\u003e\n\u003cstrong style=\"color:#0f172a;\"\u003eBest for:\u003c\/strong\u003e Compact air preparation in home garages and small shops. One unit combines pressure regulation, water-oil filtration, and a gauge — replaces three separate components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe Le Lematec AI303-R1 combines a precision pressure regulator and a 5-micron oil-water separator in one compact aluminum housing. Rated to 140 PSI with 1\/4\" NPT connections and a built-in analog gauge, it delivers clean, regulated air to HVLP spray guns, plasma cutters, impact wrenches, and any pneumatic tool that depends on dry, pressure-stable air.\u003c\/p\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor up to 140 PSI with a standard 1\/4\" NPT outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir tools\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eHVLP spray guns, plasma cutters, impact wrenches, ratchets, sanders, nailers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir lines\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eStandard 1\/4\" NPT air hoses, quick-connect couplers, manifolds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eWall, pipe, or compressor outlet — best installed at the point of use to catch in-line condensate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:20px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat’s in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAI303-R1 filter regulator combo unit\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAnalog pressure gauge (pre-installed)\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAluminum filter bowl with 5-micron element\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003ePush-button drain valve\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT inlet\/outlet fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eMounting bracket\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-stage air conditioning:\u003c\/strong\u003e 5-micron filter element removes water, oil mist, and particulates; integrated regulator dials in working pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in analog gauge:\u003c\/strong\u003e Monitor regulated output PSI at a glance — no separate gauge or tee required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e140 PSI \/ 10 Bar rated:\u003c\/strong\u003e Handles the output of single- and two-stage compressors typical of home and pro shops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum construction:\u003c\/strong\u003e Lightweight, corrosion-resistant, and longer-lived than plastic filter bowls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-button drain:\u003c\/strong\u003e Quick contaminant removal without tools — empty the bowl in seconds between jobs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4\" NPT universal fit:\u003c\/strong\u003e Drops into any standard pneumatic system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:8px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap;border-bottom:1px solid #e2e8f0;\"\u003eMaximum pressure\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;border-bottom:1px solid #e2e8f0;\"\u003e140 PSI \/ 10 Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap;border-bottom:1px solid #e2e8f0;\"\u003eMaximum flow\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;border-bottom:1px solid #e2e8f0;\"\u003e48 SCFM @ 140 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap;border-bottom:1px solid #e2e8f0;\"\u003eFilter element\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;border-bottom:1px solid #e2e8f0;\"\u003e5-micron, reusable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap;border-bottom:1px solid #e2e8f0;\"\u003eConnection\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;border-bottom:1px solid #e2e8f0;\"\u003e1\/4\" NPT (male\/female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap;border-bottom:1px solid #e2e8f0;\"\u003eHousing\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;border-bottom:1px solid #e2e8f0;\"\u003eAluminum body, polycarbonate bowl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap;\"\u003eBest applications\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;\"\u003eHVLP spray, plasma cutting, general workshop air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:14px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;font-weight:600;color:#1e293b;\"\u003eDo I need a separate filter if I have the AI303-R1?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eNo. The AI303-R1 combines filtration and regulation in one unit. The 5-micron element removes water, oil mist, and particulates. For ultra-clean air on spray painting or plasma cutting, add a desiccant dryer downstream — but for typical air tools, this unit is the only conditioning stage you need.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:14px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;font-weight:600;color:#1e293b;\"\u003eWhat air compressor do I need to drive it?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eAny compressor with a 1\/4\" NPT outlet rated up to 140 PSI. The regulator handles up to 48 SCFM at maximum pressure, which exceeds the demand of every common single-tool operation. For high-demand tools (sandblasters, large sanders), mount the unit close to the tool to minimize pressure drop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:14px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;font-weight:600;color:#1e293b;\"\u003eCan I use this for spray painting?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eYes. The AI303-R1 is widely used by auto painters and refinishers. The filter removes moisture and oil that cause fisheye defects, and the gauge lets you dial in the precise PSI your spray gun needs — typically 25–50 PSI at the gun for HVLP.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:14px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;font-weight:600;color:#1e293b;\"\u003eCan I wall-mount it?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eYes. The included bracket supports wall or pipe mounting. Mount at the point of use rather than at the compressor — that placement catches the condensate that forms in the air line between compressor and tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:14px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;font-weight:600;color:#1e293b;\"\u003eHow do I drain the bowl?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003ePush the drain valve at the bottom of the bowl. Collected water and oil discharge in seconds. Drain after each session, or daily if the compressor runs heavily — a full bowl will start passing moisture downstream.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:14px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;font-weight:600;color:#1e293b;\"\u003eWhen should I choose the AI303-R1 over the AI303-C1 or AI-304?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe AI303-R1 is the only unit in this lineup with an integrated pressure regulator and gauge — choose it when you need to dial in a specific PSI at the tool. Pick the \u003ca href=\"\/products\/air-compressor-filter-with-teflon-tape\" style=\"color:#1d4ed8;text-decoration:none;\"\u003eAI303-C1\u003c\/a\u003e (1\/4\" NPT, 150 PSI, filter-only) if you already have a separate regulator. Pick the \u003ca href=\"\/products\/1-4-npt-inline-air-filter-water-separator-ultra-slim-200-psi-compact-air-dryer-ai-304\" style=\"color:#1d4ed8;text-decoration:none;\"\u003eAI-304\u003c\/a\u003e (1\/4\" NPT, 200 PSI, slim inline filter) when you need the highest-pressure, lowest-profile filtration without regulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n\"@context\":\"https:\/\/schema.org\",\n\"@type\":\"FAQPage\",\n\"mainEntity\":[\n{\n\"@type\":\"Question\",\n\"name\":\"Do I need a separate filter if I have the AI303-R1?\",\n\"acceptedAnswer\":{\n\"@type\":\"Answer\",\n\"text\":\"No. The AI303-R1 combines filtration and regulation in one unit. The 5-micron element removes water, oil mist, and particulates. For ultra-clean air on spray painting or plasma cutting, add a desiccant dryer downstream \u0026mdash; but for typical air tools, this unit is the only conditioning stage you need.\"\n}\n},\n{\n\"@type\":\"Question\",\n\"name\":\"What air compressor do I need to drive the AI303-R1?\",\n\"acceptedAnswer\":{\n\"@type\":\"Answer\",\n\"text\":\"Any compressor with a 1\/4-inch NPT outlet rated up to 140 PSI. The regulator handles up to 48 SCFM at maximum pressure, which exceeds the demand of every common single-tool operation.\"\n}\n},\n{\n\"@type\":\"Question\",\n\"name\":\"Can I use the AI303-R1 for spray painting?\",\n\"acceptedAnswer\":{\n\"@type\":\"Answer\",\n\"text\":\"Yes. The AI303-R1 is widely used by auto painters and refinishers. The filter removes moisture and oil that cause fisheye defects, and the built-in gauge lets you set the precise PSI your spray gun needs \u0026mdash; typically 25 to 50 PSI at the gun for HVLP.\"\n}\n},\n{\n\"@type\":\"Question\",\n\"name\":\"Can the AI303-R1 be wall-mounted?\",\n\"acceptedAnswer\":{\n\"@type\":\"Answer\",\n\"text\":\"Yes. The included bracket supports wall or pipe mounting. Mount at the point of use rather than at the compressor \u0026mdash; that placement catches condensate forming in the air line between compressor and tool.\"\n}\n},\n{\n\"@type\":\"Question\",\n\"name\":\"How do I drain the filter bowl?\",\n\"acceptedAnswer\":{\n\"@type\":\"Answer\",\n\"text\":\"Push the drain valve at the bottom of the bowl. Collected water and oil discharge in seconds. Drain after each session, or daily under heavy compressor use.\"\n}\n},\n{\n\"@type\":\"Question\",\n\"name\":\"When should I choose the AI303-R1 over the AI303-C1 or AI-304?\",\n\"acceptedAnswer\":{\n\"@type\":\"Answer\",\n\"text\":\"The AI303-R1 is the only unit in this lineup with an integrated pressure regulator and gauge \u0026mdash; choose it when you need to dial in a specific PSI at the tool. Pick the AI303-C1 (1\/4-inch NPT, 150 PSI, filter-only) if you already have a separate regulator. Pick the AI-304 (1\/4-inch NPT, 200 PSI, slim inline filter) when you need the highest-pressure, lowest-profile filtration without regulation.\"\n}\n}\n]\n}\n\u003c\/script\u003e\n\u003ch3\u003eRelated Guides\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/inline-air-regulator-buying-guide\"\u003eInline Air Regulator Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"pat-related-content\" data-pat-added=\"2026-05-13\" style=\"margin-top:20px;padding:20px;background:#f8fafc;border-radius:10px;border:1px solid #cbd5e1;\"\u003e\n\u003ch3 style=\"margin-top:0;margin-bottom:14px;color:#0f172a;font-size:1.15em;\"\u003eRelated Products \u0026amp; Categories\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:24px;\"\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eYou might also like\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/air-filter-regulator-compressor-oil-water-separator-combo-with-gauge\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAI303-R1 Filter-Regulator\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/15pcs-air-compressor-fittings-hose-kit-1-4-npt-quick-connects\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003e15-piece NPT Fittings Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/digital-air-regulator-gauge-dar01b\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eDAR01B Digital Air Regulator\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eBrowse categories\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAll Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAir Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- v2 1778637924 --\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":37800931819692,"sku":"BX-3XLL-V13R","price":23.89,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/le-lematec-ai303-r1-air-regulator-water-separator-gauge-hero_webp.jpg?v=1770940586"},{"product_id":"inline-air-compressor-water-oil-dirt-filter","title":"Professional Inline Air Filter System - 150 PSI Aluminum Oil \u0026 Water Separator with Drain (AI303)","description":"\u003cdiv class=\"pat-quick-facts\" data-pat-added=\"2026-04-27\" style=\"margin-bottom:18px;padding:14px 16px;background:#f8fafc;border-radius:10px;border:1px solid #e2e8f0;\"\u003e\n\u003cdiv style=\"font-size:0.85em;color:#64748b;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;margin-bottom:10px;\"\u003eQuick Facts\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;\"\u003e\n\u003cspan style=\"background:#dbeafe;color:#1e40af;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003e2-150 PSI\u003c\/span\u003e\u003cspan style=\"background:#dcfce7;color:#166534;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003e1-micron filter\u003c\/span\u003e\u003cspan style=\"background:#fef3c7;color:#a16207;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003e1\/4\" NPT\u003c\/span\u003e\u003cspan style=\"background:#ccfbf1;color:#115e59;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003eAluminum + brass\u003c\/span\u003e\u003cspan style=\"background:#f1f5f9;color:#334155;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003ePush-button drain\u003c\/span\u003e\u003cspan style=\"background:#fae8ff;color:#86198f;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003eLe Lematec\u003c\/span\u003e\u003cspan style=\"background:#fef2f2;color:#991b1b;padding:6px 14px;border-radius:20px;font-size:0.9em;font-weight:600;display:inline-block;white-space:nowrap;\"\u003e12-mo guarantee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.95em;color:#475569;line-height:1.5;\"\u003e\n\u003cstrong style=\"color:#0f172a;\"\u003eBest for:\u003c\/strong\u003e Protecting air tools and spray guns from moisture, oil, and dirt. Essential point-of-use filtration for any compressed-air system.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec AI303 is a 150 PSI inline air filter that removes oil, water, and dirt from compressed air. Aluminum construction with auto-drain and visual inspection bowl. 1\/4\" NPT connections. Price: ~$17. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Protecting air tools and spray guns from moisture damage. Essential for any compressed air system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 id=\"tinymce_scroll_sign\"\u003eExperience Superior Filtration with the Inline Air Filter\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eProtect your air tools with the AI303 Professional Inline Filter System. This premium separator combines a 1-micron reusable filter, one-way safety valve, and push-button drain in a durable aluminum body with brass fittings. Designed for workshops demanding clean, dry air and reliable contamination removal across a 2-150 PSI range.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eMaximum Filtration:\u003c\/strong\u003e 1-micron filter removes 99.9% of contaminants\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003ePremium Construction:\u003c\/strong\u003e Aluminum body with solid brass fittings\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eEasy Maintenance:\u003c\/strong\u003e Quick-action push-button drain valve\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSafety Design:\u003c\/strong\u003e One-way valve prevents tool damage\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eVersatile Range:\u003c\/strong\u003e Operates from 2-150 PSI (90 PSI optimal)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eUniversal Fit:\u003c\/strong\u003e ¼\" NPT male\/female connections\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eAmerican Quality:\u003c\/strong\u003e Not made in China - engineered for reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eOperating Pressure: 2-150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFilter Rating: 1 micron\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConstruction: Aluminum body, brass fittings\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnections: ¼\" NPT\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFeatures: Push-button drain, backflow protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eIdeal for spray systems, plasma cutters, and air suspension. Experience professional-grade air quality - Add to Cart now to protect your equipment investment.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProfessional Performance Guarantee:\u003c\/strong\u003e Workshop-proven and trusted by automotive professionals.\u003c\/p\u003e\n\u003ch3\u003eOptimize Your Compressed Air System\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003einline air filter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003esystem is essential for maintaining clean and dry compressed air. Using advanced filtering technology, it traps harmful contaminants such as moisture and oil, ensuring your equipment operates efficiently. As a result, your air tools and machinery function better, which leads to increased productivity. This filter is perfect for various industries, including automotive repair and woodworking.\u003c\/p\u003e\n\u003ch3\u003eDurability and Reliability\u003c\/h3\u003e\n\u003cp\u003eConstructed from high-quality aluminum, this inline air filter is designed to withstand pressures up to 150 PSI. Its robust build ensures long-lasting performance, even in demanding environments. Plus, with a built-in drain, you can easily remove accumulated moisture without interrupting your workflow. Consequently, you spend less time maintaining your equipment and more time focusing on your projects.\u003c\/p\u003e\n\u003ch3\u003eSimple Installation and Maintenance\u003c\/h3\u003e\n\u003cp\u003eInstallation of this air filter is straightforward, making it accessible for users of all skill levels. Just connect it to your existing system, and you're ready to go! Moreover, maintenance is a breeze—regularly check the filter and drain it as needed to keep your air supply clean. This simplicity not only saves you time but also ensures your air compressor system remains free from potential issues caused by contaminants.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the inline air filter element?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The AI303 uses a reusable 1-micron filter element. Clean it every 200-300 hours of use by rinsing with warm soapy water and allowing it to fully dry. Replace only when the filter shows visible damage or reduced airflow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the AI303 with a plasma cutter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the AI303 is excellent for plasma cutting applications. Its 1-micron filtration removes moisture and oil that can contaminate the plasma arc, resulting in cleaner cuts and longer consumable life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between the AI303, AI303-R1, and AI303-R2?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The AI303 is a standalone filter\/separator. The AI303-R1 adds an integrated pressure regulator with analog gauge. The AI303-R2 adds a digital pressure regulator with LCD display. Choose based on whether you need filtration only or filtration plus pressure control.\u003c\/p\u003e\n\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eTriple Filtration:\u003c\/strong\u003e Removes water, oil, and dirt particles in a single pass — comprehensive air cleaning\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eAluminum Body:\u003c\/strong\u003e Lightweight corrosion-resistant construction for long service life\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eCompact Size:\u003c\/strong\u003e Small footprint for installation in tight spaces or portable setups\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eManual Drain:\u003c\/strong\u003e Quick-twist drain valve for fast water removal between jobs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAI303 inline air filter\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eFilter element\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eManual drain valve\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eMounting bracket\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor up to 150 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Lines\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eStandard 1\/4\" NPT air hose systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Tools\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAll pneumatic tools, spray guns, sanders, impact wrenches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e general air filtration, portable shop use, moisture and oil removal, tool protection, point-of-use filtering\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eHow often should I replace the filter element?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eUnder normal use, replace the filter element every 6-12 months or when you notice reduced airflow. In dusty or high-humidity environments, check monthly. A dirty filter restricts airflow and reduces tool performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eCan I install multiple filters in series?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eYes. Professional setups often use a water separator first (AI303), then a desiccant dryer (ZN312-D) for maximum air quality. Each stage removes different contaminants for progressively cleaner air.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eHow does this air compressor separator filter work?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe AI303 separator filter uses a centrifugal separation process combined with a 5-micron filter element. Compressed air enters and spins through the chamber, separating heavier oil and water droplets from the air stream. The remaining particles are caught by the filter element. Clean, dry air exits to your tools while contaminants collect in the drain bowl below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-maintenance-care-guide\"\u003ePneumatic Tool Maintenance Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-tools\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pat-related-content\" data-pat-added=\"2026-04-27\" style=\"margin-top:30px;padding:20px;background:#f8fafc;border-radius:10px;border:1px solid #cbd5e1;\"\u003e\n\u003ch3 style=\"margin-top:0;margin-bottom:14px;color:#0f172a;font-size:1.15em;\"\u003eRelated Products \u0026amp; Guides\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:24px;\"\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eYou might also like\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/air-filter-regulator-compressor-oil-water-separator-combo-with-gauge\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAir Compressor Filter Regulator Combo (1\/2\" NPT)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/analog-air-compressor-regulator\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAnalog Air Compressor Regulator\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/digital-air-pressure-regulator\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eDigital Air Pressure Regulator\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eRelated guides\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/news\/how-to-set-up-an-air-compressor-filter-regulator-lubricator-frl-system\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eHow to Set Up an FRL System\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-cfm-psi-requirements-chart\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003ePneumatic Tool CFM \u0026amp; PSI Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/news\/air-compressor-fittings-types-sizes-compatibility-guide\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAir Compressor Fittings Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":37800931917996,"sku":"A7-4RWO-0S6I","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/le-lematec-ai303-air-compressor-water-separator-inline-filter-hero_webp.jpg?v=1770871216"},{"product_id":"inline-air-compressor-oil-water-separator-filter-zn312","title":"Professional Inline Air Compressor Filter - 150 PSI Oil \u0026 Water Separator with Auto Drain (ZN312)","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec ZN312 is a 150 PSI inline air compressor filter with automatic drain. Removes oil, water, and particulates from compressed air lines. Clear bowl for visual inspection. 1\/4\" NPT connections. Price: ~$17. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Basic compressed air filtration — install before your spray gun or air tool to protect against moisture and oil contamination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 id=\"tinymce_scroll_sign\"\u003eInline Air Compressor Filter for Optimal Performance\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eTransform your compressed air quality with the ZN312 Professional Inline Filter. This high-performance separator features a 1-micron reusable filter, push-button drain valve, and broad 2-150 PSI operating range. Built with premium zinc construction and one-way safety valve, it's the perfect solution for protecting your air tools and ensuring optimal performance.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSuperior Filtration:\u003c\/strong\u003e 1-micron filter removes oil and water contaminants\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eQuick Maintenance:\u003c\/strong\u003e Push-button drain valve for easy service\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSafety Design:\u003c\/strong\u003e One-way valve prevents dangerous backflow\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eVersatile Range:\u003c\/strong\u003e Operates from 2-150 PSI for all applications\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003ePremium Build:\u003c\/strong\u003e Zinc construction with steel drain valve\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eUniversal Fit:\u003c\/strong\u003e Standard ¼\" NPT connections\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eTool Protection:\u003c\/strong\u003e Extends air tool life and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eOperating Pressure: 2-150 PSI (90 PSI optimal)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFilter Type: 1-micron reusable\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMaterial: Zinc body, steel valve\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnection: ¼\" NPT\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFeatures: Push-button drain, one-way valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eEssential for spray painting, sandblasting, and pneumatic tools. Ensure clean, dry air delivery - Add to Cart now to protect your air system investment.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProfessional Performance Guarantee:\u003c\/strong\u003e Workshop-tested for reliable contamination removal.\u003c\/p\u003e\n\u003ch3\u003eExceptional Filtration Capabilities\u003c\/h3\u003e\n\u003cp\u003eThe Inline Air Compressor Filter is designed specifically to remove oil and water from compressed air systems. It operates effectively at pressures up to 150 PSI, ensuring that your air tools remain clean and efficient. By using this filter, you can prevent moisture from entering your air compressor, which can lead to rust and damage. This is crucial for maintaining the longevity of your equipment and enhancing the performance of your tools.\u003c\/p\u003e\n\u003ch3\u003eInnovative Auto Drain Feature\u003c\/h3\u003e\n\u003cp\u003eOne significant advantage of the Inline Air Compressor Filter is its automatic drainage system. This feature automatically expels accumulated water without any manual intervention. Therefore, it saves you time and ensures that the filter operates optimally without clogging. Regular maintenance is reduced because the filter constantly drains excess moisture, allowing you to focus on your work instead.\u003c\/p\u003e\n\u003ch3\u003eEasy Installation and Maintenance\u003c\/h3\u003e\n\u003cp\u003eThe Inline Air Compressor Filter is designed for easy installation, making it a practical choice for both professionals and DIY enthusiasts. It connects seamlessly into your existing air compressor system, ensuring minimal downtime. Maintenance is straightforward; check filters regularly and replace them as needed to ensure consistent air quality. Because of its user-friendly design, you can maintain your air compressor system without a hassle.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I drain the water separator?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Drain the ZN312 before each use session and during extended operation in humid conditions. The transparent bowl lets you visually monitor moisture accumulation. In high-humidity environments, you may need to drain every 1-2 hours of continuous use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between the ZN312 and the ZN312E-3?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The ZN312 is a standard inline filter with oil\/water separation and auto drain. The ZN312E-3 adds a desiccant filter stage that absorbs moisture vapor — providing much drier air than mechanical separation alone. Choose the ZN312E-3 for spray painting and moisture-sensitive applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I install multiple filters in series?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, installing filters in series improves air quality progressively. A common setup is: ZN312 first (removes bulk water and large particles), followed by a desiccant dryer (ZN312E-3 or ZN312-D-C1) for ultra-dry air. This two-stage approach extends desiccant life significantly.\u003c\/p\u003e\n\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eAuto-Drain Design:\u003c\/strong\u003e Automatically expels collected water — no manual draining required\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eOil \u0026amp; Water Separation:\u003c\/strong\u003e Centrifugal element removes both oil mist and water droplets from compressed air\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003e150 PSI Rating:\u003c\/strong\u003e Handles standard industrial and home compressor output\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eTransparent Bowl:\u003c\/strong\u003e Visual inspection of contamination level without disassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eZN312 inline air filter\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAutomatic drain mechanism\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eMounting bracket\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor up to 150 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eInline in any 1\/4\" NPT air line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Tools\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eProtects all downstream tools from moisture and particulates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e permanent air line installation, set-and-forget filtration, shop air protection, moisture removal, oil separation\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eWhat is the difference between the ZN312 and AI303?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eBoth are 1\/4\" NPT inline filters at 150 PSI. The ZN312 features automatic draining and is designed for set-and-forget installation. The AI303 has manual drain and is slightly more compact. Choose the ZN312 for permanent installation; choose the AI303 for portable or temporary setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eHow effective is the auto-drain feature?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe auto-drain activates when accumulated water reaches a threshold level. It works well for continuous-use environments. In light-use shops, you may still want to manually check periodically, especially in humid conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eIs this the same as an air compressor moisture trap?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eYes, the ZN312 functions as both a moisture trap and oil separator for air compressors. It traps condensed water (moisture) and oil mist from your compressed air line before they reach your tools. The auto-drain feature means trapped moisture is released automatically, unlike basic moisture traps that require manual draining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-maintenance-care-guide\"\u003ePneumatic Tool Maintenance Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-tools\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRelated Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Guide: Filter, Regulator \u0026amp; Lubricator\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/how-to-stop-water-in-air-lines\"\u003eHow to Stop Water in Air Lines\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/inline-air-dryer-for-compressor\"\u003eDo You Need an Inline Air Dryer?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/filters\"\u003eShop All Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/air-dryers\"\u003eAir Dryers \u0026amp; Desiccant Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- pat-touch-2026-04-28-fix-google-feed --\u003e\u003c!-- pat-touch-2026-04-28-google-feed-resync --\u003e\n\u003cdiv class=\"pat-related-content\" data-pat-added=\"2026-05-07\" style=\"margin-top:30px;padding:20px;background:#f8fafc;border-radius:10px;border:1px solid #cbd5e1;\"\u003e\n\u003ch3 style=\"margin-top:0;margin-bottom:14px;color:#0f172a;font-size:1.15em;\"\u003eRelated Products \u0026amp; Guides\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:24px;\"\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eYou might also like\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/air-filter-zn312e-3\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eZN312E-3 Air Filter\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/air-filter-regulator-compressor-oil-water-separator-combo-with-gauge\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAI303-R1 Filter Regulator Combo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eRelated guides\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/news\/how-to-set-up-an-air-compressor-filter-regulator-lubricator-frl-system\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eHow to Set Up an FRL Filtration System\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAir Compressor Accessories Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":37800932016300,"sku":"7L-5C1I-1QUV","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/le-lematec-zn312-air-dryer-compressor-water-separator-hero_webp.jpg?v=1771919179"},{"product_id":"air-compressor-filter-with-teflon-tape","title":"1\/4\" NPT Air Compressor Water Separator - 150 PSI Professional Filter System (AI303-C1)","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec AI303-C1 is a 1\/4\" NPT air compressor water separator rated at 150 PSI. Aluminum construction with manual drain valve and clear inspection bowl. Removes water and particulates from compressed air lines. Price: ~$18. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Budget-friendly moisture protection for air tools, spray guns, and pneumatic equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAir Compressor Inline Filter — Remove Moisture \u0026amp; Oil Contaminants\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProfessional-Grade Water \u0026amp; Contaminant Removal for Peak Air Tool Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eThis high-efficiency water separator delivers pristine, contaminant-free air for all your pneumatic equipment. Built with premium aluminum construction and brass fittings, it features a 1-micron filter and one-way valve protection, operating seamlessly at pressures up to 150 PSI.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProfessional Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eAdvanced Filtration\u003c\/strong\u003e: Reusable 1-micron filter removes water, oil, and dirt\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eQuick-Release System\u003c\/strong\u003e: Push-button drain valve for effortless maintenance\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSafety Design\u003c\/strong\u003e: One-way valve prevents damaging backflow\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eUniversal Fit\u003c\/strong\u003e: 1\/4\" NPT male and female connections\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003ePremium Build\u003c\/strong\u003e: Aluminum body with solid brass fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMaximum Pressure: 150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eOperating Range: 2-150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnection Size: 1\/4\" NPT\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFilter Grade: 1 micron\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConstruction: Aluminum\/Brass\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eDrain Type: Push-button valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAI303-C1 Water Separator\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eTeflon Tape\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMale Connector\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eInstallation Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eProfessional Workshops\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConstruction Sites\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAutomotive Garages\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eVehicle Air Systems\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eIndustrial Settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cem\u003e\"Perfect for onboard air compressor... removes all water I was seeing before\"\u003c\/em\u003e - Verified Purchase, May 2023\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eUpgrade Your Air System Today\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does a water separator do for my air compressor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A water separator removes liquid water and oil droplets from compressed air before they reach your tools. Without one, moisture causes rust inside air tools, fisheye defects in paint finishes, and premature wear on pneumatic equipment. The AI303-C1 uses centrifugal separation and a 5-micron filter for effective contamination removal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Where should I install the AI303-C1 in my air system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Install the AI303-C1 as close to your air tools as practical — after the compressor tank and after any main-line piping. For best results, mount vertically with the drain bowl at the bottom. If you have a long hose run, install at the end near the tool connection point.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How is the AI303-C1 different from the AI303?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The AI303-C1 is a compact water separator with 1\/4-inch NPT connections optimized for single-tool installations. The AI303 is a larger inline filter system with push-button drain and 1-micron filtration. Choose the AI303-C1 for individual tool protection and the AI303 for main-line filtration.\u003c\/p\u003e\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eWater Separator Technology:\u003c\/strong\u003e Centrifugal action spins moisture out of compressed air before it reaches your tools\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eTeflon Tape Included:\u003c\/strong\u003e Everything needed for leak-free installation in one package — no extra trips to the hardware store\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eCompact 1\/4\" NPT Size:\u003c\/strong\u003e Fits standard home and small shop air systems without adapters\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eClear Bowl:\u003c\/strong\u003e Visual inspection of water level without disassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAI303-C1 water separator filter\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eTeflon tape for leak-free installation\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eMounting bracket\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor with 1\/4\" NPT outlet, up to 150 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Tools\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAll 1\/4\" NPT pneumatic tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eInline between compressor and tool or at point-of-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e moisture removal, tool protection, home garage air system, small shop filtration, inline water separation\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eWhat is the difference between a water separator and a desiccant filter?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eA water separator (like the AI303-C1) removes bulk liquid water using centrifugal force — it catches about 90% of moisture. A desiccant filter (like the ZN312-D) uses chemical media to absorb remaining water vapor for near-dry air. For most shop use, a water separator is sufficient. For spray painting and sensitive applications, use both in series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eDoes this filter remove oil from the air?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe AI303-C1 is primarily a water separator. It catches some oil droplets but is not a dedicated oil removal filter. For oil-free air (needed for painting and food-grade applications), add a coalescing filter downstream.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-maintenance-care-guide\"\u003ePneumatic Tool Maintenance Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-tools\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c!-- pat-touch-2026-04-28-google-feed-resync --\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":37800932507820,"sku":"JJ-6Z3D-BSKY","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/le-lematec-ai303-c1-air-compressor-water-separator-inline-dryer-hero_webp.jpg?v=1770940002"},{"product_id":"air-compressor-filter-dryer-compressed-air-desiccant-dryer-zn312-d-2-teflon","title":"Professional Air Compressor Filter Dryer - 150 PSI Desiccant System with Color Indicator (ZN312-D-C1)","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec ZN312-D-C1 is a 150 PSI desiccant air compressor filter dryer with a built-in color indicator that changes from blue to pink when the desiccant needs replacement. Regeneratable desiccant beads. Price: ~$18. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Maintaining dry compressed air for spray painting, plasma cutting, and protecting sensitive pneumatic tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eCompressed Air Desiccant Dryer — Remove Moisture at the Source\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTransform Your Air Tools' Performance with Laboratory-Grade Clean Air\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eThis professional-grade air compressor filter dryer delivers pristine, moisture-free compressed air for all your pneumatic tools. Built with premium zinc construction and reusable design, it maintains optimal air quality at pressures up to 150 PSI, making it ideal for auto shops, woodworking, and industrial applications.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eEssential Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eIndustrial-Grade Construction\u003c\/strong\u003e: Durable zinc housing with metal-threaded 1\/4\" NPT connections\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSmart Monitoring System\u003c\/strong\u003e: Color-changing desiccant beads (blue to pink) indicate replacement timing\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eProfessional Capacity\u003c\/strong\u003e: Handles 1-150 PSI at 22 CFM with operating temperature range of 27-40°F\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eComplete Kit\u003c\/strong\u003e: Includes filter housing, desiccant beads, and Teflon tape for immediate setup\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eUniversal Compatibility\u003c\/strong\u003e: Works with all standard compressed air systems and pneumatic tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMaximum Pressure: 150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFlow Rate: 22 CFM\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnection Size: 1\/4\" NPT\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eHousing Material: Zinc\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eTemperature Range: 27-40°F\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eIndicator Type: Color-changing beads\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eReusable Design: Yes\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eOrigin: Premium quality, non-Chinese manufacturing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e1x ZN312-D-C1 Air Compressor Filter Dryer\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e1x Pack Premium Desiccant Beads\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e1x Roll Teflon Tape\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e1x User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003e✓ Professional-Grade Performance ✓ Easy Maintenance ✓ Built to Last ✓ Clear Visual Indicators ✓ Universal Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cem\u003e\"Perfect final dry before use of air. Love that you can take this apart to dry or put in new desiccant!\"\u003c\/em\u003e - Verified Purchase, February 2023\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProtect Your Investment Today - Add to Cart Now\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy Desiccant Drying Matters\u003c\/h3\u003e\n\u003cp\u003eStandard particulate filters catch liquid water droplets, but they can't remove water vapor — the invisible moisture still dissolved in compressed air. As air cools downstream, this vapor condenses inside your tools, causing corrosion, seal damage, and lubrication washout. A desiccant dryer absorbs water vapor before it condenses, delivering truly dry air. This is essential for spray painting (prevents fish eyes), sandblasting (prevents media clumping), and any precision application. Learn more in our \u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003ecomplete FRL unit guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eHow the Color Indicator Works\u003c\/h3\u003e\n\u003cp\u003eThe desiccant beads change color as they absorb moisture — typically from blue (dry) to pink (saturated). When the beads turn pink, it's time to regenerate or replace them. This eliminates guesswork and ensures you're always delivering dry air to your tools.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch4\u003eHow often do I need to replace the desiccant?\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cp\u003eReplacement frequency depends on humidity levels and usage volume. In moderate climates with average use, desiccant beads typically last 3-6 months before needing regeneration. The color-change indicator makes it easy to know exactly when service is needed — no guessing required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4\u003eWhere should I install a desiccant dryer in my air system?\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cp\u003eInstall the desiccant dryer after your particulate\/water separator filter and before the regulator. The particulate filter catches bulk water and debris first, so the desiccant handles only water vapor — extending its service life significantly. See our \u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eaccessories buying guide\u003c\/a\u003e for complete installation diagrams.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4\u003eDo I need a desiccant dryer if I already have an inline filter?\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes, if you do spray painting, sandblasting, or precision work. Inline filters remove liquid water and particles but cannot remove water vapor. In humid environments, this vapor condenses inside tools and ruins paint finishes. A desiccant dryer is the only way to remove dissolved moisture from compressed air.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eProfessional Air Drying:\u003c\/strong\u003e Removes water vapor to produce dry, clean compressed air for moisture-sensitive applications\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eColor Indicator System:\u003c\/strong\u003e Instantly see desiccant condition — no guessing about cartridge life remaining\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eTeflon Tape Included:\u003c\/strong\u003e Complete installation kit — leak-free connection out of the box\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003e150 PSI Industrial Rating:\u003c\/strong\u003e Handles any standard compressor output pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eZN312-D-C1 desiccant filter dryer\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eReplaceable desiccant element with color indicator\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eTeflon tape\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor up to 150 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003ePre-Filters\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eBest used downstream of a water separator (AI303, ZN312) for maximum drying\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eApplications\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAutomotive painting, powder coating, airbrush, electronics, food processing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e final-stage air drying, spray painting, powder coating, electronics manufacturing, food-grade air\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-faq\" style=\"margin-top:25px;\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eHow do I know when to replace the desiccant?\u003c\/h4\u003e\n\u003cp\u003eThe ZN312-D-C1 features a built-in color indicator — blue means the desiccant is active and absorbing moisture, pink means it's saturated and needs replacement or regeneration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eCan the desiccant beads be regenerated?\u003c\/h4\u003e\n\u003cp\u003eYes, the desiccant beads can be regenerated by baking them in an oven at 250°F for 2-3 hours until they return to their original blue color.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eWhat contaminants does this remove?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe ZN312-D-C1 primarily targets water vapor — the moisture that remains after a mechanical water separator has removed bulk liquid water. It also traps fine particulates. For oil removal, add a coalescing filter upstream.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eWhere should I install this in my air system?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eInstall it as the LAST filter before your tool or spray gun. Ideal order: Compressor → Water Separator → Coalescing Filter (optional) → Desiccant Dryer → Tool. This staged approach maximizes desiccant life and delivers the driest possible air.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-tools\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eHow It Compares\u003c\/h3\u003e\u003cp\u003eThe ZN312-D uses desiccant media to absorb moisture vapor that standard water separators leave behind. Compared to the basic ZN312E water separator, the ZN312-D provides significantly drier air output, making it essential for spray painting and powder coating where any moisture causes defects. Compared to refrigerated air dryers, the ZN312-D costs a fraction of the price and requires no electricity, though it needs periodic desiccant replacement.\u003c\/p\u003e\u003c!-- pat-touch-2026-04-28-fix-google-feed --\u003e\u003c!-- pat-touch-2026-04-28-google-feed-resync --\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":37800932606124,"sku":"WM-JYLP-WTTG","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/le-lematec-zn312-d-c1-air-dryer-desiccant-water-separator-hero_webp.jpg?v=1771987968"},{"product_id":"zn312e-2-3","title":"LE LEMATEC ZN312E-3 Desiccant Air Compressor Filter | 1\/4\" NPT | Air Dryer for Compressors \u0026 Air Tools","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec ZN312E-3 is a 1\/4\" NPT desiccant air dryer that removes moisture from compressed air using replaceable desiccant beads with color-change indicator (blue = dry, pink = saturated). 150 PSI rated. Price: ~$17. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Spray painting, powder coating, and any application where bone-dry air is critical. Pairs with inline filters for complete air preparation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAir Compressor Moisture Trap — Dual-Stage Water Separator Filter\u003c\/h2\u003e\n\u003ch3\u003e\u003cb\u003eZN312E-3  1\/4\" Desiccant Air Compressor Filter: The Ultimate Defense Against Moisture, Rust, and Uneven Finishes\u003c\/b\u003e\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003eUnparalleled Performance for Your Air Tools and Finishes\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eMoisture and contaminants are your air tools' worst enemy, often leading to rust, corrosion, and premature equipment failure. The Le Lematec ZN312E-3 1\/4\" Desiccant Air Compressor Filter is your shield against these detrimental elements, delivering clean, dry air for improved tool longevity and flawless finishes. Its efficient flow and easy maintenance set it apart as an essential addition to your workshop.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eSay goodbye to moisture-related issues in your air supply with the Le Lematec ZN312E-3 Desiccant Air Compressor Air Filter Sandblaster. \u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003eKey Features and Benefits:\u003cbr\u003e\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003e🌬️ Efficient Flow:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e Operating at 1-150 PSI and 22 CFM, this desiccant filter ensures minimal airflow reduction, outperforming other compressed air dryers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e♻️ Reusable \u0026amp; Reliable:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e Effectively removing contaminants, this filter provides clean air to your tools, extending their lifespan and delivering consistent performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e💪 Sturdy Construction:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e The zinc metal housing and secure connection points eliminate leaks, ensuring a safe and dependable setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e📊  Smart Indicators:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e Equipped with color-changing desiccant beads, you'll know exactly when it's time to replace them, ensuring uninterrupted clean air flow.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e🛠️ Lightweight \u0026amp; Durable:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e Designed to meet strict quality standards without adding excessive weight to your airline, it's a durable and lightweight solution.\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003e🔄 Quick and Easy Desiccant Replacement:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e No need for complex disassembly. Simply unscrew the top and bottom, replace the beads, and you're good to go!\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003eWhy You Need the ZN312E-3 Desiccant Filter:\u003cbr\u003e\u003c\/b\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e🛡️ Prevent Rust and Corrosion: \u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003eProtect your tools and equipment from moisture-related damage, ensuring longevity and top-notch performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e💧 Avoid Water Droplets in Spray Patterns:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e Achieve flawless finishes without the hassle of water droplets causing defects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e🌬️ Enhance Finish Quality:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e Ensure even drying and adhesion for a professional finish every time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e🧰 Extend Equipment Life:\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e Avoid costly repairs and replacements by keeping your tools in optimal condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003e📦 What’s Included:\u003cbr\u003e\u003c\/b\u003e\u003cstrong\u003e          - \u003c\/strong\u003e Air Inlet\/Outlet: ¼ inch Male and Female\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eDesiccant Bead\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003ePolycarbonate (PC) Desiccant Bowl\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003e💬  Customer Reviews:  \u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003eReviewed in the United States on May 2, 2023\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003e- \u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e “I use it for my quickie paint sprays, right at the gun. Works great ! \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003eDoug's Welding \u0026amp; Fabrication Recommended ! From a guy who has every tool known to man, this is a good buy and worthy of having in your shop. \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003eI would not recommend, if I wasn't thoroughly happy with my purchase and use of the tool. This one is Highly Recommended !”\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003e🛠️ Technical Specifications:\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/b\u003eCapacity: 28g\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003ePressure: 90-150 PSI\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eMaterial: Polycarbonate (PC) Desiccant Bowl\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eColor Change Indicator\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eZinc Metal Housing\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003eWhy Choose Le Lematec ZN312E-3?\u003cbr\u003e\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e✅ \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003eNot made in China: Ensuring reliability and quality.\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e✅\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e Fast desiccant bead replacement: Keeping your air supply consistently clean.\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e✅\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e Easy color change indicator: Providing a visual cue for maintenance.\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e✅\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e Reliably removes dirt, oil, moisture, and water: Ensuring top-notch air quality.\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e✅\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e Works in any orientation: Providing flexibility in installation.\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e          - \u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e✅\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e Built for Longevity: Crafted from high-quality materials that stand the test of time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eReady to Protect Your Equipment and Perfect Your Finishes? \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eUpgrade your air supply quality and protect your tools with the Le Lematec ZN312E-3 Desiccant Air Compressor Air Filter Sandblaster. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e🛒 Click the “\u003c\/span\u003e\u003cb\u003eAdd to Cart\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e” button now for uninterrupted performance! 🛒\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eEquip yourself with the Le Lematec ZN312E-3 1\/4\" Desiccant Air Compressor Filter and elevate the quality and longevity of your tools and projects. Don’t settle for less when it comes to performance and reliability. Take the first step in safeguarding your valuable tools and achieving the pristine finishes you've always desired.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long does the desiccant last before replacement?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The desiccant beads in the ZN312E-3 typically last 6-12 months depending on usage and humidity levels. The color-indicating beads change from blue\/orange to pink\/clear when saturated. Some desiccant types can be regenerated by oven-drying at 250°F for 2-3 hours.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between a desiccant dryer and a standard water separator?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A standard water separator removes liquid water and oil droplets through centrifugal action and mesh filtration. A desiccant dryer goes further by absorbing water vapor — the dissolved moisture that passes through standard filters. For spray painting and moisture-sensitive work, desiccant drying is essential.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the ZN312E-3 alone or do I need a pre-filter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: While the ZN312E-3 can work standalone, using a standard water separator (like the ZN312) upstream significantly extends desiccant life by removing bulk water before it reaches the desiccant. This two-stage setup is the most cost-effective approach for ultra-dry air.\u003c\/p\u003e\n\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eCompact 1\/4\" NPT Design:\u003c\/strong\u003e Fits standard home and small shop air systems without adapters or pipe changes\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eLast-Stage Moisture Removal:\u003c\/strong\u003e Install after a water separator for near-zero moisture air — critical for flawless paint finishes\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eVisual Indicator:\u003c\/strong\u003e Desiccant color change tells you when to replace — orange means active, clear\/green means saturated\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eEasy Cartridge Replacement:\u003c\/strong\u003e Unscrew, swap, and you are back to dry air in under a minute\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eZN312E-3 desiccant air compressor filter (1\/4\" NPT)\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eReplaceable desiccant element\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eColor-change moisture indicator\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor up to 150 PSI with 1\/4\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eInline after water separator for multi-stage drying\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eApplications\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eSpray painting, airbrush, electronics, moisture-sensitive work\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e home shop air drying, spray painting, airbrush work, electronics protection, last-stage moisture removal\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eDo I need both a water separator AND a desiccant filter?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eFor best results, yes. A water separator removes 90% of bulk liquid water. The desiccant filter then removes the remaining water vapor. Using only a desiccant filter forces it to work harder and requires more frequent cartridge replacements. The two-stage approach is the professional standard for spray painting and moisture-critical work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eCan I regenerate the desiccant cartridge?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eSome desiccant types can be oven-dried for reuse, but Le Lematec recommends using fresh replacement cartridges for consistent performance. Regenerated desiccant loses capacity over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-maintenance-care-guide\"\u003ePneumatic Tool Maintenance Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-tools\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c!-- pat-touch-2026-04-28-google-feed-resync --\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":40147154141356,"sku":"YH-HY8H-VQYM","price":17.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/lematec-zn312e-3-compressed-air-dryer-desiccant-filter-hero_webp_3ded8ff8-d84e-47e1-be6d-617d452830fc.jpg?v=1772001525"},{"product_id":"air-filter-zn312e-3","title":"Professional 3\/8\" Air Compressor Dryer with Desiccant Filter - 22 CFM, 150 PSI - ZN312E-3","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec ZN312E-3 (3\/8\" version) is a high-flow desiccant air dryer rated at 150 PSI and 22 CFM. 3\/8\" NPT connections for larger air lines. Uses replaceable desiccant beads with visual color-change saturation indicator. Price: ~$18. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Shops with 3\/8\" air lines needing high-flow moisture removal for spray painting and sandblasting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHeavy-Duty Air Compressor Filter — Industrial Moisture Separator\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTransform your air tool performance with the Professional ZN312E-3 Air Compressor Dryer.\u003c\/strong\u003e This industrial-grade 3\/8\" desiccant filter delivers exceptionally clean, dry air at 22 CFM capacity, making it perfect for automotive painting, pneumatic tools, and professional applications.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eDesigned for reliability and efficiency, this air dryer features a high-performance filtration system that effectively removes moisture, oil, and contaminants without restricting airflow. The robust metal housing and precision-engineered connections ensure leak-free operation at pressures up to 150 PSI, while the smart color-changing indicator helps you monitor filter condition at a glance.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eWhether you're a professional automotive technician, industrial user, or serious DIY enthusiast, this air dryer provides the clean, dry air essential for achieving professional-quality results and protecting your valuable tools from moisture damage.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eKey Features and Benefits \u003c\/strong\u003e\u003c\/p\u003e\n\u003col class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-decimal space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eSuperior Performance\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMaximum flow rate of 22 CFM with minimal restriction\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eOperating pressure range: 1-150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eEffective moisture, oil, and particle removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003col class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-decimal space-y-2 pl-8\" start=\"2\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eProfessional-Grade Construction\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eDurable zinc metal housing\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003ePremium polycarbonate desiccant bowl\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eReliable 3\/8\" male and female connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003col class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-decimal space-y-2 pl-8\" start=\"3\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eSmart Maintenance Design\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eVisual color-change indicator for filter status\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eEasy desiccant replacement system\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eNo tools required for maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003col class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-decimal space-y-2 pl-8\" start=\"4\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eVersatile Applications\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eIdeal for automotive painting\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003ePerfect for pneumatic tools\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eSuitable for industrial use\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eEssential for precision applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003col class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-decimal space-y-2 pl-8\" start=\"5\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eTool Protection\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003ePrevents moisture-related damage\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eExtends tool lifespan\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eEnsures consistent performance\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eEliminates contamination risks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eTechnical Specifications:\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eCapacity: 28g desiccant\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnection Size: 3\/8\" inlet\/outlet\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMaximum Pressure: 150 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFlow Rate: 22 CFM\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eHousing Material: Zinc metal\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eBowl Material: Polycarbonate (PC)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003ePackage Includes:\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAir compressor dryer unit\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003ePremium desiccant beads\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eInstallation instructions\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eManufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e \u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose the 3\/8-inch version over the 1\/4-inch model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 3\/8-inch ZN312E-3 handles higher airflow with less pressure drop, making it ideal for tools requiring 8+ CFM like impact wrenches and large spray guns. The larger port size reduces restriction — critical for maintaining tool performance on high-demand equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I regenerate the desiccant beads?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Many desiccant types can be regenerated by spreading the beads on a baking sheet and heating at 250°F (120°C) for 2-3 hours until they return to their original color. Silica gel and indicating desiccant typically support 5-10 regeneration cycles before replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know when the desiccant needs replacing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The color-indicating desiccant beads change color as they absorb moisture — typically from blue\/orange to pink\/clear. Check the transparent viewing window regularly. When more than 50% of the beads have changed color, it is time to regenerate or replace them.\u003c\/p\u003e\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eDesiccant Drying Technology:\u003c\/strong\u003e Chemical media absorbs water vapor that mechanical separators miss — delivers near-dry air for moisture-sensitive applications\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eColor-Change Indicator:\u003c\/strong\u003e Desiccant changes color when saturated — tells you exactly when to replace the cartridge, no guesswork\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003e22 CFM Capacity:\u003c\/strong\u003e High-flow 3\/8\" NPT model handles multiple tools or high-demand equipment simultaneously\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003e150 PSI Rating:\u003c\/strong\u003e Industrial-grade pressure handling for professional shop and factory air systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eZN312E-3 desiccant air dryer (3\/8\" NPT)\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eReplaceable desiccant cartridge\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eColor-change moisture indicator\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e3\/8\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor up to 150 PSI, 22 CFM max flow rate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Lines\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003e3\/8\" NPT air piping — larger than standard 1\/4\" for higher flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eApplications\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eSpray painting, powder coating, plasma cutting, CNC machines, dental\/medical air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e spray painting air prep, powder coating, plasma cutting, CNC air supply, dental air, moisture-critical applications\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eHow often do I need to replace the desiccant cartridge?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eCartridge life depends on humidity, air usage, and whether you have an upstream water separator. In moderate humidity with a water separator installed upstream, expect 3-6 months. In high humidity without a pre-filter, replacement may be needed monthly. The color indicator makes monitoring easy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eWhat is the difference between the 1\/4\" and 3\/8\" models?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe 3\/8\" model (ZN312E-3) handles 22 CFM — enough for multiple tools or high-demand equipment. The 1\/4\" model is suited for single-tool or light-duty use. Choose based on your air line size and total CFM demand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-maintenance-care-guide\"\u003ePneumatic Tool Maintenance Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-tools\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pat-related-content\" data-pat-added=\"2026-05-07\" style=\"margin-top:30px;padding:20px;background:#f8fafc;border-radius:10px;border:1px solid #cbd5e1;\"\u003e\n\u003ch3 style=\"margin-top:0;margin-bottom:14px;color:#0f172a;font-size:1.15em;\"\u003eRelated Products \u0026amp; Guides\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:24px;\"\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eYou might also like\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/inline-air-compressor-oil-water-separator-filter-zn312\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eZN312 Inline Air Compressor Filter\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/products\/air-filter-regulator-compressor-oil-water-separator-combo-with-gauge\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eAI303-R1 Filter Regulator Combo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 240px;min-width:200px;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;font-weight:600;color:#334155;\"\u003eRelated guides\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#475569;list-style:disc;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/news\/how-to-set-up-an-air-compressor-filter-regulator-lubricator-frl-system\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eHow to Set Up an FRL Filtration System\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\" style=\"color:#1d4ed8;text-decoration:none;font-weight:500;\"\u003eComplete Guide to Filter, Regulator \u0026amp; Lubricator (FRL) Units\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":40147836371116,"sku":"ZN312E-3 3 \/ 8 inch","price":18.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/lematec-3-8-compressed-air-dryer-desiccant-filter-system-hero_webp.jpg?v=1772009771"},{"product_id":"a1303-r2","title":"Professional 2-in-1 Air Filter System - 160 PSI Digital Regulator with Water Separator (AI303-R2)","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec AI303-R2 is a 2-in-1 digital air filter system combining a water separator with a digital pressure regulator and gauge. 160 PSI rated with LCD display showing multiple units. 1\/4\" NPT connections. Price: ~$31. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: Users who want precise digital pressure control and air filtration in a single compact unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eReplacement Air Filter Element — Compatible with Le Lematec Regulators\u003c\/h2\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eExperience complete air control with the AI303-R2 Professional Air System. This innovative combo unit features a digital pressure gauge and water separator filter with push-button drain. Built with non-corrosive materials and offering precise digital readings from 0-160 PSI, it's the perfect solution for maintaining clean, regulated air in professional applications.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eDigital Precision:\u003c\/strong\u003e LCD display shows PSI, Bar, Kpa readings (±2% accuracy)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eClean Air Delivery:\u003c\/strong\u003e Integrated filter removes water, oil, and contaminants\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSmart Power:\u003c\/strong\u003e Auto ON\/OFF feature with replaceable CR2032 battery\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eQuick Maintenance:\u003c\/strong\u003e Push-button drain valve for easy service\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eProfessional Range:\u003c\/strong\u003e Controls from 0-160 PSI (0-11 Bar\/0-1100 Kpa)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eTemperature Rated:\u003c\/strong\u003e Operates from 5-60°C\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eQuality Build:\u003c\/strong\u003e Not made in China - engineered for reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003ePressure Range: 0-160 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eOperating Pressure: 90 PSI optimal\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnection: ¼\" NPT\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003ePower: CR2032 battery\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFeatures: Digital display, water separator, drain valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003eEssential for spray painting, woodworking, and air tool protection. Experience precise control with clean air delivery - Add to Cart now to upgrade your compressed air system.\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap break-words\"\u003e\u003cstrong\u003eProfessional Performance Guarantee:\u003c\/strong\u003e Workshop-tested for reliable contamination removal and accurate pressure control.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What advantage does the digital display have over an analog gauge?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The AI303-R2 digital LCD shows exact PSI values to 0.1 precision, eliminating the guesswork of reading an analog dial. It also displays in multiple units (PSI, BAR, kPa, kg\/cm²) simultaneously — essential when following specs from different manufacturers or regions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the AI303-R2 filter and regulate at the same time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the AI303-R2 is a true 2-in-1 unit combining a 5-micron particulate filter with a precision digital pressure regulator. This eliminates the need for two separate inline devices, saving space and reducing potential leak points in your air system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the AI303-R2 compare to the AI303-R1?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Both are 2-in-1 filter-regulators. The AI303-R1 has an analog pressure gauge while the AI303-R2 features a digital LCD display with multi-unit readout. The AI303-R2 offers higher precision for applications where exact pressure matters, such as HVLP spray painting.\u003c\/p\u003e\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose This Tool\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eDigital Pressure Display:\u003c\/strong\u003e Precise pressure readout replaces guesswork from analog gauges — set exact PSI for each tool\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003e160 PSI Rating:\u003c\/strong\u003e Highest pressure rating in the Le Lematec filter regulator lineup — handles industrial compressor output\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eIntegrated Water Separator:\u003c\/strong\u003e Removes moisture before it reaches the regulator diaphragm — extends regulator life and improves accuracy\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003ePremium 2-in-1 Design:\u003c\/strong\u003e Digital regulation + water separation in a single unit saves space and plumbing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAI303-R2 digital filter regulator\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eDigital pressure display\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eWater separator filter element\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eDrain valve\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003e1\/4\" NPT fittings\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor up to 160 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Tools\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAll pneumatic tools — provides filtered, regulated air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eDigital PSI readout for precise pressure setting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e precision air regulation, spray booth setup, digital pressure monitoring, high-pressure air treatment, professional shop filtration\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"extra-faqs\" style=\"margin-top:20px;\"\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eWhy choose the AI303-R2 over the AI303-R1?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eThe AI303-R2 adds a digital pressure display for precise readout (vs. analog gauge on the R1) and handles 160 PSI (vs. 140 PSI). Choose the R2 for spray painting and precision applications where exact PSI matters. The R1 is a great value option for general shop use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\" style=\"margin-bottom:15px;\"\u003e\n\u003ch4 style=\"margin-bottom:5px;color:#1e293b;\"\u003eDoes the digital display need batteries?\u003c\/h4\u003e\n\u003cp style=\"margin:0;color:#475569;\"\u003eYes, the digital display uses a standard replaceable battery with 12+ months typical life. The display provides ±1 PSI accuracy compared to ±3-5 PSI on analog gauges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/inline-air-regulator-buying-guide\"\u003eInline Air Regulator Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Categories\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/air-regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":42054725402796,"sku":"AI303-R2-5\/24","price":30.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/le-lematec-ai303-r2-digital-air-regulator-water-separator-hero_webp.jpg?v=1770953030"},{"product_id":"1-4-npt-inline-air-filter-water-separator-ultra-slim-200-psi-compact-air-dryer-ai-304","title":"1\/4\" NPT Inline Air Filter \u0026 Water Separator - Ultra-Slim 200 PSI Compact Air Dryer (AI-304)","description":"\u003cdiv class=\"product-summary-tldr\" style=\"margin-bottom:20px;padding:16px;background:#f0fdf4;border-left:4px solid #16a34a;border-radius:0 8px 8px 0;\"\u003e\n\u003cp style=\"margin:0 0 8px 0;font-weight:600;color:#15803d;\"\u003eProduct Summary\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px 0;\"\u003eThe Le Lematec AI-304 is a compact 1\/4\" NPT inline air filter and water separator rated at 200 PSI — the highest pressure rating in its class. Weighing just 0.2 lbs with an ultra-slim profile, it mounts directly at the tool without adding bulk or throwing off balance. 1-micron filtration removes water, oil, and particulates. Transparent polycarbonate bowl with push-button drain. Price: ~$15. Factory direct from Le Lematec.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-style:italic;color:#166534;\"\u003eBest for: HVLP spray gun users, auto painters, and anyone who needs clean dry air without the weight and bulk of traditional bowl filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eInline Air Filter \u0026amp; Water Separator — Ultra-Slim 200 PSI Design That Won't Get in Your Way\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Most Compact Air Dryer in the Le Lematec Lineup — Built for Precision Work Where Balance Matters\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eTraditional bowl-style air filters are bulky, heavy, and throw off the balance of your spray gun. The AI-304 solves this with an ultra-slim inline design that weighs just 0.2 pounds and measures under 3 inches tall. Mount it directly between your air hose and tool for moisture-free air without the added weight or awkward bulk that ruins your aim.\u003c\/p\u003e\n\n\u003cp\u003eWith a 200 PSI maximum working pressure — far exceeding the 150 PSI rating on most competing inline filters — the AI-304 handles everything from delicate HVLP spray painting to high-demand impact wrenches and pneumatic hammers. The reinforced aluminum body and polycarbonate bowl are built for professional shop environments where tools get knocked around.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Advantages Over Standard Filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eUltra-Slim Profile\u003c\/strong\u003e: Mounts inline without adding bulk — won't interfere with spray gun handling or tight workspace access\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003e200 PSI Rating\u003c\/strong\u003e: Industry-leading pressure capacity — 33% higher than standard 150 PSI filters, safe for all pneumatic tools\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eFeatherweight 0.2 lb\u003c\/strong\u003e: Aluminum construction keeps weight minimal so your tools feel the same with or without the filter\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003e1-Micron Filtration\u003c\/strong\u003e: Removes water, oil mist, and fine particulates for clean, dry air that protects tool internals and paint finishes\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eSee-Through Bowl\u003c\/strong\u003e: Impact-resistant polycarbonate lets you monitor moisture buildup at a glance — no guesswork\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003ePush-Button Drain\u003c\/strong\u003e: One-touch purge empties trapped water in seconds without disconnecting from the air line\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eUniversal 1\/4\" NPT\u003c\/strong\u003e: Standard male and female threads fit any air compressor, hose, or tool connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eMaximum Working Pressure: 200 PSI\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConnection Size: 1\/4\" NPT (Male \u0026amp; Female)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eFilter Grade: 1 micron\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eBody Material: Lightweight Aluminum\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eBowl Material: Impact-Resistant Polycarbonate\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eDrain Type: Push-Button Quick Drain\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eWeight: 0.2 lbs (3.2 oz)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eDimensions: 2.16\" L x 2.16\" W x 2.94\" H\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eASIN: B0FQHV3VM2\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAI-304 Inline Air Filter \u0026amp; Water Separator\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eReplacement Filter Element\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eInstallation Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"-mt-1 [li\u0026gt;\u0026amp;]:mt-2 list-disc space-y-2 pl-8\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eHVLP Spray Guns \u0026amp; Auto Paint Work\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eImpact Wrenches \u0026amp; Air Ratchets\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAir Sanders \u0026amp; Grinders\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003ePneumatic Nail Guns\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eProfessional \u0026amp; Home Garage Workshops\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eConstruction Sites \u0026amp; Automotive Shops\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why is the AI-304 better for spray gun use than a standard bowl filter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Standard bowl filters add significant weight and bulk directly behind the spray gun, throwing off balance and causing wrist fatigue during long paint sessions. The AI-304's ultra-slim inline design weighs just 0.2 lbs and sits flush in the air line, so your spray gun handles exactly the same as without a filter. You get clean, dry air without sacrificing control or comfort.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What does the 200 PSI rating mean compared to 150 PSI filters?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Most inline air filters are rated at 150 PSI, which is fine for light-duty tools but leaves no safety margin with larger compressors or high-demand tools like impact wrenches. The AI-304's 200 PSI rating provides a 33% higher pressure capacity, meaning it handles pressure spikes and high-flow applications without risk of failure. It's the highest-rated compact inline filter in its class.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often do I need to drain the water from the AI-304?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Drainage frequency depends on humidity and usage. In humid conditions or during extended spray sessions, check the transparent bowl every 30-60 minutes. The push-button drain takes less than 2 seconds — just press and release. In dry climates or light use, draining once per session is typically sufficient.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the AI-304 with my impact wrench or just spray guns?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The AI-304 works with any pneumatic tool that uses 1\/4\" NPT connections and operates under 200 PSI. This includes impact wrenches, die grinders, air ratchets, sanders, blow guns, and nail guns. While it's designed to be especially beneficial for spray guns (where moisture causes fisheye defects), every air tool benefits from cleaner, drier air through longer life and better performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How is the AI-304 different from the AI303-C1 and other Le Lematec filters?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The AI-304 is Le Lematec's most compact and highest-pressure inline filter. Compared to the AI303-C1 (150 PSI, manual drain), the AI-304 offers 33% higher pressure capacity, a slimmer profile, lighter weight, and a push-button drain for faster maintenance. For heavy-duty main-line filtration, consider the AI303-R1 filter-regulator combo. For point-of-use tool protection with minimal weight, the AI-304 is the top choice.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this filter remove oil from compressed air?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the AI-304's 1-micron filter element captures oil mist and fine particles along with water droplets. For applications requiring absolutely oil-free air (medical, food processing), a dedicated coalescing filter may be needed downstream. For spray painting, automotive work, and general shop use, the AI-304 provides sufficient oil and moisture removal for clean results.\u003c\/p\u003e\n\n\u003cdiv class=\"enhanced-features\" style=\"margin-top:20px;\"\u003e\n\u003ch3 style=\"color:#0f172a;font-size:1.1em;\"\u003eWhy Professionals Choose the AI-304\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eSlim Design, Zero Interference:\u003c\/strong\u003e Mounts inline without adding bulk — spray gun balance stays perfect, tight spaces stay accessible\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003e200 PSI — Highest in Class:\u003c\/strong\u003e 33% more pressure capacity than standard 150 PSI filters, handles any air tool and compressor setup\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003e1-Micron Precision Filtration:\u003c\/strong\u003e Traps water, oil mist, and particulates that cause fisheye paint defects and premature tool wear\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eInstant Visual Monitoring:\u003c\/strong\u003e Clear polycarbonate bowl shows water level at a glance — no guesswork, no disassembly\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\n\u003cstrong\u003eOne-Touch Drain:\u003c\/strong\u003e Push-button purge empties trapped moisture in under 2 seconds without disconnecting the air line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"whats-in-box\" style=\"margin-top:25px;padding:18px;background:#fefce8;border:1px solid #eab308;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#a16207;font-size:1.1em;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eAI-304 inline air filter \u0026amp; water separator\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eReplacement 1-micron filter element\u003c\/li\u003e\n\u003cli style=\"margin-bottom:4px;color:#78350f;\"\u003eInstallation guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compatible-with\" style=\"margin-top:20px;padding:18px;background:#eff6ff;border:1px solid #3b82f6;border-radius:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;color:#1d4ed8;font-size:1.1em;\"\u003eCompatible With\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Compressors\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAny compressor with 1\/4\" NPT outlet, up to 200 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eSpray Guns\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eAll HVLP, LVLP, and conventional spray guns with 1\/4\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eAir Tools\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eImpact wrenches, ratchets, grinders, sanders, blow guns, nail guns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 12px 6px 0;font-weight:600;color:#1e40af;vertical-align:top;white-space:nowrap;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;color:#1e3a5f;\"\u003eInline between air hose and tool — no mounting bracket needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"use-cases\" style=\"margin-top:15px;padding:12px;background:#f0fdf4;border-radius:8px;\"\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e HVLP spray painting, auto body paint prep, moisture removal, pneumatic tool protection, inline water separation, compact air dryer, home garage air system, professional workshop filtration\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eRelated Guides \u0026amp; Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/frl-filter-regulator-lubricator-guide\"\u003eComplete FRL Unit Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/pneumatic-tool-maintenance-care-guide\"\u003ePneumatic Tool Maintenance Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/air-compressor-accessories-buying-guide\"\u003eAir Compressor Accessories Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"related-products-links\" style=\"margin-top:20px;padding:15px;background:#f8f9fa;border-radius:8px;\"\u003e\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/products\/air-compressor-filter-with-teflon-tape\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ AI303-C1 Water Separator (150 PSI Budget Option)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/products\/air-filter-regulator-compressor-oil-water-separator-combo-with-gauge\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ AI303-R1 Filter-Regulator Combo\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/filters\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ All Air Filters \u0026amp; Separators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/collections\/regulators\" style=\"color:#2563eb;text-decoration:none;\"\u003e→ Air Regulators\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"LE LEMATEC","offers":[{"title":"Default Title","offer_id":46075794587820,"sku":"AI-304","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/files\/513mSGfXeqL._SL1500.jpg?v=1774508947"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/3697\/5276\/collections\/69852e9022e83586830e21621826e549_80bad093-83fc-49d3-b513-e73cc317e87b.jpg?v=1780028104","url":"https:\/\/proairtools.com\/collections\/air-compressor-filter.oembed","provider":"Pro Air Tools ","version":"1.0","type":"link"}