AIR REGULATORS
ACCESSORIES
Professional 2-in-1 Air Compressor Regulator & Filter - 140 PSI Aluminum Water/Oil Separator with Gauge (AI303-R1)
Regular price
$23.89
Product Summary
The Le Lematec AI303-R1 combines an air pressure regulator and oil-water separator filter in one 140 PSI unit. Features an adjustable gauge and auto-drain bowl. 1/4" NPT connections. Price: ~$24. Factory direct from Le Lematec.
Best for: Compact air preparation setups where space is limited. One unit replaces separate filter and regulator.
Air Filter Regulator Combo — Oil-Water Separator with Gauge
Upgrade your air tool performance with this professional-grade 2-in-1 air regulator and filtration system. Featuring a precision 140 PSI gauge, 1-micron reusable filter element, and quick-release drain valve, this aluminum unit delivers clean, regulated air for HVLP spray guns, plasma cutters, and all air-powered tools. Its heavy-duty yet lightweight design ensures reliable performance and easy maintenance in any workshop setting.
Key Features:
- Complete Filtration: Removes water, oil, and debris with 1-micron filter element
- Precise Control: Accurate pressure regulation up to 140 PSI/10 Bar with easy-read gauge
- Professional Build: Durable aluminum construction with impact-resistant housing
- Universal Compatibility: 1/4-inch NPT fittings for broad tool compatibility
- Easy Maintenance: Push-button drain valve for quick contaminate removal
- Workshop Ready: Ideal for spray guns, plasma cutters, and air tools
- Quality Assured: American-owned brand with premium materials
Technical Specifications:
- Maximum Pressure: 140 PSI / 10 Bar
- Connection: 1/4 inch NPT (male/female)
- Construction: Aluminum body
- Features: Integrated gauge, adjustment knob, drain valve
- Applications: HVLP, air tools, general workshop use
Enhance your air tool performance with professional-grade filtration and control. Add to Cart now for precision air management.
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Frequently Asked Questions
Q: Do I need a separate filter if I have the AI303-R1?
A: No, the AI303-R1 combines filtration and pressure regulation in one unit. It includes a 5-micron filter element that removes water, oil, and particles. For spray painting or plasma cutting where ultra-clean air is critical, consider adding a desiccant dryer downstream.
Q: What's the maximum air flow rate of the AI303-R1?
A: The AI303-R1 handles up to 48 SCFM at its rated 140 PSI maximum. This is sufficient for most single-tool operations. For high-demand tools requiring 10+ CFM, position the regulator as close to the tool as possible to minimize pressure drop.
Q: Can I use the AI303-R1 for spray painting?
A: Yes, the AI303-R1 is popular among automotive painters. The integrated filter removes moisture and oil that cause fisheye defects in paint finishes. The analog gauge lets you dial in the exact PSI your spray gun requires — typically 25-50 PSI at the gun.
Why Professionals Choose This Tool
- Oil & Water Separation: Removes both oil mist and water from compressed air in a single filtration stage
- Built-In Gauge: Monitor regulated output pressure at a glance — no separate gauge needed
- 140 PSI Industrial Rating: Handles the output of most single and two-stage compressors
- Aluminum Construction: Lightweight and corrosion-resistant — outlasts plastic filter bowls in shop environments
What's in the Box
- AI303-R1 filter regulator combo
- Analog pressure gauge
- Aluminum filter bowl
- Drain valve
- 1/4" NPT fittings
- User manual
Compatible With
| Air Compressors | Any compressor up to 140 PSI with standard NPT outlet |
| Air Tools | All pneumatic tools — spray guns, impact wrenches, ratchets, sanders |
| Air Lines | Standard 1/4" NPT air hoses and quick-connect fittings |
Ideal Applications: small shop air treatment, home garage filtration, inline regulation, point-of-use air conditioning
What is the difference between the AI303-R1 and the AS209?
The AI303-R1 is a compact 1/4" NPT unit rated at 140 PSI — ideal for home garages and small shops. The AS209 is a larger 1/2" NPT unit rated at 160 PSI — better for industrial settings with higher air volume and multiple tool stations. Choose based on your pipe size and air demand.
Can I mount this on the wall?
Yes. The included mounting bracket allows wall or pipe mounting near your work area. Mounting at the point of use (rather than at the compressor) is recommended for best results — it catches moisture that condenses in the air line between compressor and work area.
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Shipping Information
- Most USA-based orders are shipped directly from our warehouses within 24 hours for your convenience and maximum efficiency.
- Your product should arrive within 3 - 7 Business Days.
Product Return/Refund and Exchange Policies
At Pro Air Tools, we ensure that we are providing the best quality products from the most trusted hand tool brand. Thus, we stand behind all of our products and quality control 100%.
In the event that the products you ordered from us did not meet your expectations, we will gladly offer you our 30 Months Satisfaction Guarantee Request, no questions asked and no restocking fee!
If within 30 Months from your purchase, you are not fully satisfied with any of the products, you may request any of the following:
- Product Replacement
- Exchange the product with another product of the same value.
- Refund the amount you paid.
Proof of purchase from Pro Air Tools is required for all return, refund, and exchange requests. We also require anyone who wishes to return a product, or request a refund, to fill out our Return/Refund Form. We will notify you via email or phone once we process your return/refund request. Refunds will be credited to the original payment method.
With regards to product exchanges, please note that we only accept this type of request if the product delivered to you is defective or damaged. If a customer opts to request a product exchange with “change of mind” as the reason, the product must be returned in its original packaging. The product should not be used or installed in any manner. All return shipping costs will be shouldered by the customer. Return unused product to our office address at 103 Edwin Pl. Asheville, N.C. 28801.
If you have any question regarding our return/refund and exchange policy that was not answered here, feel free to reach out to us via:
Email at info@proairtools.com
A phone call at +1 828 398 0334
PO Box 8367
725 MERRIMON AVE
ASHEVILLE, NC 28804-2447
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