What's the difference between the AI303 and the ZN312?

AI303 is a gravity separator removing bulk liquid and oil via centrifugal force. The ZN312 is a 1-micron filter capturing fine mist/moisture. For best air quality, install AI303 first (Stage 1) and ZN312 second (Stage 2).

Will this cause pressure drop in my air line?

No. The AI303 features an optimized flow path engineered to maintain full downstream pressure. Unlike cheap restrictive filters, it uses centrifugal separation that works WITH the air flow. Your tools will perform at their maximum pressure.

How often do I need to drain the bowl?

Drain frequency depends on humidity. Check the transparent bowl and push the drain valve when water reaches the 1/3 mark (takes 2 seconds). In hot, humid conditions, drain every 30-60 minutes. Standard 1/4" NPT connections install in minutes.

Why aluminum instead of plastic?

Aluminum offers 3 advantages: (1) Thread integrity to prevent stripping, cross-threading, and air leaks. (2) Corrosion resistance against separated moisture. (3) Structural strength to handle pressure surges without cracking. Built to last.

Is the AI303 compatible with my tools?

Yes. With standard 1/4" NPT connections (female inlet, male outlet), the AI303 is compatible with virtually all home and professional compressors and tools, including HVLP guns, airbrushes, and impact wrenches. Operating range: 5-150 PSI.

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LE LEMATEC Air Compressor Water Separator, 1/4", Produces Clean Dry Air With One-Way Drain Valve, AI303 Dryer and Filter Rating 150 PSI, Compatible With All Air Tools

Product ID: 266221691

Details

Brand
LE LEMATEC
Compatible devices
Air Compressor
MERV rating
150
Material
Aluminum
Product dimensions
40L x 40W x

💧150 PSI moisture defense

🔧1/4-inch universal fit

⚙️Push-button drain valve

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Description

💨 Keep your air dry, your tools sharp, and your finishes flawless!

BUILT TO LAST - Heavy-duty aluminum housing and brass fittings withstand high-impact workshop environments.
EFFORTLESS MAINTENANCE - Push-button drain valve quickly releases trapped water without disassembly, keeping air supply dry.
UNIVERSAL COMPATIBILITY - Fits all standard 1/4-inch NPT air hoses and fittings for instant, hassle-free installation.
FLAWLESS FINISH EVERY TIME - Eliminates moisture to protect paint jobs and pneumatic tools from rust and water spots.
PROFESSIONAL GRADE AIR QUALITY - Removes condensation, oil vapor, and dirt to ensure clean, dry airflow for peak tool performance.

The LE LEMATEC AI303 Air Compressor Water Separator is a durable, professional-grade device designed to remove moisture, oil, and dirt from compressed air lines. Featuring a universal 1/4-inch NPT fit, a rugged aluminum and brass build, and a convenient push-button drain valve, it ensures clean, dry air for flawless paint finishes and extended tool life in both industrial and home workshop settings.

Specifications

ASIN	B01N4FMOMU
ASIN	B01N4FMOMU
Best Sellers Rank	#50,494 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #108 in Air Compressor Accessories
Brand Name	LE LEMATEC
Compatible Devices	Air Compressor, Air Tool
Customer Reviews	4.4 4.4 out of 5 stars (1,648)
Customer reviews	4.4 4.4 out of 5 stars (1,648)
Date First Available	5 May 2017
Filter Mounting Type	Clamp On
Filter Shape	Rectangular
Global Trade Identification Number	00850030726711
Is Discontinued By Manufacturer	No
Item Dimensions L x W x Thickness	40L x 40W x 92Th millimeters
Item Weight	159 g
Item model number	AI303
MERV Rating	150
Manufacturer	LE LEMATEC
Manufacturer	LE LEMATEC
Manufacturer Part Number	AI-303
Material Type	Aluminum
Model Number	AI303
Number of Items	1
Number of Packs	1
Product Dimensions	3.99 x 3.99 x 9.19 cm; 159 g
Product Grade	Like New
Unit Count	1 Count

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B/.81

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Panama.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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