AIR REGULATORS
ACCESSORIES
Professional Air Compressor Filter Dryer - 150 PSI Desiccant System with Color Indicator (ZN312-D-C1)
Regular price
$17.99
Product Summary
The 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.
Best for: Maintaining dry compressed air for spray painting, plasma cutting, and protecting sensitive pneumatic tools.
Compressed Air Desiccant Dryer — Remove Moisture at the Source
Transform Your Air Tools' Performance with Laboratory-Grade Clean Air
This 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.
Essential Features:
- Industrial-Grade Construction: Durable zinc housing with metal-threaded 1/4" NPT connections
- Smart Monitoring System: Color-changing desiccant beads (blue to pink) indicate replacement timing
- Professional Capacity: Handles 1-150 PSI at 22 CFM with operating temperature range of 27-40°F
- Complete Kit: Includes filter housing, desiccant beads, and Teflon tape for immediate setup
- Universal Compatibility: Works with all standard compressed air systems and pneumatic tools
Technical Specifications:
- Maximum Pressure: 150 PSI
- Flow Rate: 22 CFM
- Connection Size: 1/4" NPT
- Housing Material: Zinc
- Temperature Range: 27-40°F
- Indicator Type: Color-changing beads
- Reusable Design: Yes
- Origin: Premium quality, non-Chinese manufacturing
Package Contents:
- 1x ZN312-D-C1 Air Compressor Filter Dryer
- 1x Pack Premium Desiccant Beads
- 1x Roll Teflon Tape
- 1x User Manual
✓ Professional-Grade Performance ✓ Easy Maintenance ✓ Built to Last ✓ Clear Visual Indicators ✓ Universal Compatibility
"Perfect final dry before use of air. Love that you can take this apart to dry or put in new desiccant!" - Verified Purchase, February 2023
Protect Your Investment Today - Add to Cart Now
Why Desiccant Drying Matters
Standard 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 complete FRL unit guide.
How the Color Indicator Works
The 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.
Frequently Asked Questions
How often do I need to replace the desiccant?
Replacement 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.
Where should I install a desiccant dryer in my air system?
Install 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 accessories buying guide for complete installation diagrams.
Do I need a desiccant dryer if I already have an inline filter?
Yes, 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.
Why Professionals Choose This Tool
- Professional Air Drying: Removes water vapor to produce dry, clean compressed air for moisture-sensitive applications
- Color Indicator System: Instantly see desiccant condition — no guessing about cartridge life remaining
- Teflon Tape Included: Complete installation kit — leak-free connection out of the box
- 150 PSI Industrial Rating: Handles any standard compressor output pressure
What's in the Box
- ZN312-D-C1 desiccant filter dryer
- Replaceable desiccant element with color indicator
- Teflon tape
- 1/4" NPT fittings
- User manual
Compatible With
| Air Compressors | Any compressor up to 150 PSI |
| Pre-Filters | Best used downstream of a water separator (AI303, ZN312) for maximum drying |
| Applications | Automotive painting, powder coating, airbrush, electronics, food processing |
Ideal Applications: final-stage air drying, spray painting, powder coating, electronics manufacturing, food-grade air
Frequently Asked Questions
How do I know when to replace the desiccant?
The 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.
Can the desiccant beads be regenerated?
Yes, 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.
What contaminants does this remove?
The 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.
Where should I install this in my air system?
Install 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.
How It Compares
The 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.
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
Recently Viewed
Don't forget! The products that you viewed. Add it to cart now.
People Also Bought
Here’s some of our most similar products people are buying. Click to discover trending style.