---
product_id: 40029363
title: "Air Compressor Water Separator - 1/4\" NPT Inline Filter & Air Line Water Separator for Air Compressor, Moisture Trap Paint Gun Filter for Pneumatic Tools & Plasma Cutters, AI303"
brand: "le lematec"
price: "C$2138"
currency: NIO
in_stock: true
reviews_count: 13
category: "Le Lematec"
url: https://www.desertcart.ni/products/40029363-air-compressor-water-separator-1-4-npt-inline-filter-air
store_origin: NI
region: Nicaragua
---

# 99% moisture removal efficiency 1/4" NPT universal inline fit durable aluminum & brass build Air Compressor Water Separator - 1/4" NPT Inline Filter & Air Line Water Separator for Air Compressor, Moisture Trap Paint Gun Filter for Pneumatic Tools & Plasma Cutters, AI303

**Brand:** le lematec
**Price:** C$2138
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Air Compressor Water Separator - 1/4" NPT Inline Filter & Air Line Water Separator for Air Compressor, Moisture Trap Paint Gun Filter for Pneumatic Tools & Plasma Cutters, AI303 by le lematec
- **How much does it cost?** C$2138 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/40029363-air-compressor-water-separator-1-4-npt-inline-filter-air)

## Best For

- le lematec enthusiasts

## Why This Product

- Trusted le lematec brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Inline Fit:** Seamlessly integrates with standard 1/4" NPT hoses and fittings for instant setup.
- • **Push-Button Drain Valve:** Quickly purge trapped moisture and contaminants without disassembly—maintenance made effortless.
- • **Ultimate Moisture Defense:** Eliminate condensation, oil, and dirt before they damage your tools or ruin your paint finish.
- • **Rugged & Reliable Construction:** Heavy-duty aluminum housing and brass fittings built to withstand industrial and garage environments.
- • **Flawless Paint & Airbrush Finishes:** Ensure professional-grade, spot-free results with perfectly dry airflow every time.

## Overview

The LE LEMATEC AI303 Air Compressor Water Separator is a high-efficiency inline filter designed to remove moisture, oil, and dirt from compressed air lines. Featuring a universal 1/4" NPT fit, rugged aluminum and brass construction, and a convenient push-button drain valve, it protects pneumatic tools, paint guns, and plasma cutters from damage and ensures professional-quality finishes. Trusted by thousands with a 4.4-star rating, it’s the essential upgrade for any serious workshop or hobbyist setup.

## Description

Buy LE LEMATEC Air Compressor Water Separator - 1/4" NPT Inline Filter & Air Line Water Separator for Air Compressor, Moisture Trap Paint Gun Filter for Pneumatic Tools & Plasma Cutters, AI303: Separators - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Convenient and good value - This is a great little filter/dryer! I purchased this air dryer for use with an old 3-gallon horizontal air compressor that a friend gifted to me, and which I use for low-flow applications. Rather than installing the dryer right at the tool, where if would increase the overall size of the tool and could be snagged, or be subject to the weight of the hose, I installed it at the compressor outlet quick coupler, where it is out of the way and not subject to excessive pulling. When I'm done with the task I simply rotate the dryer around so that the drain button is at the low end and press the button to expel the condensate. Quick, easy, totally effective, and great value.
Review: Must have - works great and was easy to install. The filter has reduced the amount of condensation in my air take and seems to be well built with no issues.

## Features

- Ultimate Moisture Defense: Acts as a high-efficiency air water separator for air compressor lines, removing condensation, oil, and dirt before they reach your equipment. This compressor water separator prevents water spots in paint jobs and rust in expensive pneumatic tools.
- Flawless Paint & Airbrush Finishes: Essential paint gun filter that attaches directly to spray guns and airbrushes. By trapping moisture at the source, this air water separator ensures a clean, dry airflow for professional-grade automotive and hobbyist finishing without defects.
- Universal Inline Fit: Designed with standard 1/4-inch NPT inlet and outlet, this air line water separator fits most air hoses, couplers, and fittings. It installs instantly as a water separator for air compressor setups, sandblasters, and plasma cutters.
- Rugged & Reliable Construction: Unlike plastic alternatives, this unit features a heavy-duty aluminum housing and brass fittings. It serves as a durable air water separator for air compressor systems in high-impact garage and industrial workshop environments.
- Push-Button Drain Valve: Features a convenient push-button drain for fast maintenance. Quickly release trapped contaminants from the water separator without disassembling the line, ensuring your air supply remains dry and your tools operate at peak performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N4FMOMU |
| Best Sellers Rank | #35,464 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #87 in Air-Compressor Accessories |
| Brand Name | LE LEMATEC |
| Compatible Devices | air compressor air filter, air water separator for air compressor, compressor air dyer, compressor air filter, inline air dryer |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,620) |
| Global Trade Identification Number | 00850030726711 |
| Item Dimensions L x W x Thickness | 1.57"L x 1.57"W x 3.62"Th |
| Item Weight | 0.35 Pounds |
| Manufacturer | Ubiquitous |
| Material Type | Aluminum, Stainless Steel |
| Model Number | AI303 |
| Number of Items | 1 |
| Product Grade | Like New |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** LE LEMATEC
- **Global Trade Identification Number:** 00850030726711
- **Item Weight:** 0.35 Pounds
- **Manufacturer:** Ubiquitous
- **Material:** Aluminum, Stainless Steel
- **Number of Items:** 1
- **Product Dimensions:** 1.57"L x 1.57"W x 3.62"Th
- **Product Grade:** Like New
- **Unit Count:** 1.0 Count

## Images

![Air Compressor Water Separator - 1/4" NPT Inline Filter & Air Line Water Separator for Air Compressor, Moisture Trap Paint Gun Filter for Pneumatic Tools & Plasma Cutters, AI303 - Image 1](https://m.media-amazon.com/images/I/71nJ7HzhsHL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What's the difference between the AI303 and the ZN312?**
A: 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).

**Q: Will this cause pressure drop in my air line?**
A: 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.

**Q: How often do I need to drain the bowl?**
A: 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.

**Q: Why aluminum instead of plastic?**
A: 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.

**Q: Is the AI303 compatible with my tools?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Convenient and good value
*by D***N on March 24, 2026*

This is a great little filter/dryer! I purchased this air dryer for use with an old 3-gallon horizontal air compressor that a friend gifted to me, and which I use for low-flow applications. Rather than installing the dryer right at the tool, where if would increase the overall size of the tool and could be snagged, or be subject to the weight of the hose, I installed it at the compressor outlet quick coupler, where it is out of the way and not subject to excessive pulling. When I'm done with the task I simply rotate the dryer around so that the drain button is at the low end and press the button to expel the condensate. Quick, easy, totally effective, and great value.

### ⭐⭐⭐⭐⭐ Must have
*by D***M on January 26, 2026*

works great and was easy to install. The filter has reduced the amount of condensation in my air take and seems to be well built with no issues.

### ⭐⭐⭐⭐ Good Filter. Great service.
*by S***E on July 17, 2024*

The first filter worked well but there must have been a manufacturing defect because it blew apart after a few weeks. I run a 135 psi mcgraw compressor from harbor freight and the filter is rated to 150 psi. The air is very humid where i live and the filter kept a lot of water out of the line. I contacted the manufacturer and his first question was if anyone was hurt. Luckily no one was near the compressor. He proceeded to refund my money and overnighted a new filter to me. Great service!

## Frequently Bought Together

- LE LEMATEC Air Compressor Water Separator, 1/4 NPT Inline Filter & Moisture Trap for Pneumatic Tools, HVLP Spray Paint Gun & Airbrush, Durable Compressed Air Dryer with Easy Drain Valve, AI303
- LE LEMATEC Portable Sandblaster Gun Kit, Air Compressor Sand Blaster, Paint & Rust Remover, Abrasive Media & Soda Blaster for Metal, Wood, Automotive & DIY Surface Prep, AS118-2C
- LE LEMATEC Air Dryer for Compressor, Inline Moisture Filter for HVLP Spray Paint Gun, Plasma Cutter & Other Pneumatic Tools, Easy Drain Oil & Water Separator (ZN312)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ni/products/40029363-air-compressor-water-separator-1-4-npt-inline-filter-air](https://www.desertcart.ni/products/40029363-air-compressor-water-separator-1-4-npt-inline-filter-air)

---

*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-04-23*