---
product_id: 487682446
title: "LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4\" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI)"
brand: "le lematec"
price: "¥14324"
currency: JPY
in_stock: false
reviews_count: 5
category: "Le Lematec"
url: https://www.desertcart.jp/products/487682446-le-lematec-spray-gun-regulator-with-gauge-and-water-separator
store_origin: JP
region: Japan
---

# Precision airflow control up to 150 PSI Integrated water separator removes moisture & contaminants Universal 1/4" NPT fit for versatile tool compatibility LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI)

**Brand:** le lematec
**Price:** ¥14324
**Availability:** ❌ Out of Stock

## Summary

> 🎨 Elevate Your Spray Game: Precision Airflow, Zero Compromise!

## Quick Answers

- **What is this?** LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI) by le lematec
- **How much does it cost?** ¥14324 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/487682446-le-lematec-spray-gun-regulator-with-gauge-and-water-separator)

## 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

- • **Moisture-Free Mastery:** Built-in water separator and 1-micron filter eliminate condensation and oil, preventing costly paint defects.
- • **Effortless Maintenance:** Push-button drain quickly clears trapped water—no mess, no downtime, just smooth operation.
- • **Pinpoint Pressure Control:** Maintain flawless finishes with exact airflow tuning up to 150 PSI for HVLP and pneumatic tools.
- • **Universal Fit, Instant Setup:** Standard 1/4" NPT threads ensure seamless attachment to compressors, sprayers, and air tools—no adapters needed.
- • **Real-Time Pressure Monitoring:** High-visibility gauge lets you adjust on the fly, avoiding overspray and material waste.

## Overview

The LE LEMATEC AI303-R1 Spray Gun Regulator combines precision airflow control up to 150 PSI with an integrated water separator and 1-micron filter to deliver clean, dry air directly to your paint gun or pneumatic tool. Featuring a universal 1/4" NPT connection and a clear pressure gauge, it ensures consistent atomization and flawless finishes by preventing moisture and contaminants from ruining your work. Its durable aluminum build and push-button drain valve make it ideal for professional shops demanding reliability and ease of use.

## Description

Achieve Flawless Paint Finishes with Precision Air ControlWhen it comes to automotive refinishing or detailed painting, moisture and inconsistent pressure are the enemies of a perfect job. The LE LEMATEC AI303-R1 serves as your final line of defense. Designed as a professional spray gun regulator with gauge and integrated water separator, this unit attaches directly to your tool to ensure the air hitting your paint is clean, dry, and at the exact pressure required.Why This Is Essential for Your Shop:1. Precise Pressure Management: Whether you are running an HVLP setup or a standard sprayer, consistent airflow is critical to avoid orange peel. Our air flow regulator with gauge allows you to fine-tune pressure up to 150 PSI. The clear visual display allows for real-time monitoring, ensuring your paint gun regulator with gauge maintains the sweet spot for atomization.2. Stops "Fish Eye" and Moisture Damage: Water condensation in your air line can ruin a clear coat in seconds. This unit features a 1-micron filter element that traps oil, water, and dirt. It functions as a highly effective regulator with pressure gauge for spray gun applications, ensuring contaminants are removed before they exit the nozzle.3. Universal & Durable: Built with standard 1/4" NPT threads, this air hose regulator with gauge fits universally on compressors and air tools. The housing is impact-resistant for heavy shop use, and the push-button drain valve makes clearing trapped moisture instant and mess-free.Upgrade your pneumatic setup today with LE LEMATEC—cleaner air, better control, and superior results.

Review: Although slightly bulky it's a great tool for spraying and regulating on the fly. Love it!
Review: Excellent produit !

## Features

- Precision Paint Gun Regulator with Gauge: engineered for finishing applications, this unit provides precise airflow control directly at the tool; essential for HVLP spray guns to ensure consistent atomization and professional paint results without pressure drops.
- Stops Moisture & Contaminants: The integrated air dryer and water separator removes condensation, oil, and debris before they reach your spray gun; effectively prevents "fish eyes" and moisture-related defects in paint, clear coat, and primer applications.
- Universal 1/4" NPT Air Hose Fit: Designed with standard 1/4" NPT threads to function as a universal air hose regulator with gauge; easily attaches to compressors, air lines, or directly to the inlet of sprayers, sanders, and plasma cutters.
- Clear Visual Monitoring: Features a high-visibility gauge allowing for real-time adjustments up to 150 PSI; this air flow regulator with gauge ensures you are operating within the optimal range for your specific tool, preventing material waste.
- Easy Maintenance Push-Button Drain: Unlike difficult screw-valves, this unit features a push-button drain for instant release of trapped water; the heavy-duty, impact-resistant construction ensures reliable daily use in body shops and garages.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08H3DHFKR |
| Best Sellers Rank | #46,512 in Home Improvement ( See Top 100 in Home Improvement ) #122 in Air Compressor Accessories |
| Brand | LE LEMATEC |
| Capacity | 125 Pounds |
| Country of Origin | USA |
| Global Trade Identification Number | 00850030726834 |
| Included Components | Filter |
| Item Weight | 271 g |
| Item model number | AI303-R1 |
| Manufacturer | Ubiquitous |
| Material | Aluminium |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Model Name | AI303 R1 |
| Power Source | Air Powered |
| Product Dimensions | 43L x 43W x 99H Millimeters |
| Recommended Uses For Product | Tire Inflation |
| Special Feature | Heavy Duty, Lightweight |
| Style | Fashion |

## Product Details

- **Brand:** LE LEMATEC
- **Capacity:** 125 Pounds
- **Included Components:** Filter
- **Item Weight:** 271 Grams
- **Material:** Aluminium
- **Power Source:** Air Powered
- **Product Dimensions:** 43L x 43W x 99H Millimeters
- **Recommended Uses For Product:** Tire Inflation
- **Special Feature:** Heavy Duty, Lightweight
- **Style:** Fashion

## Images

![LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI) - Image 1](https://m.media-amazon.com/images/I/614XoeVhI5L.jpg)
![LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI) - Image 2](https://m.media-amazon.com/images/I/81OBuf2y6wL.jpg)
![LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI) - Image 3](https://m.media-amazon.com/images/I/81tPSSrdZJL.jpg)
![LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI) - Image 4](https://m.media-amazon.com/images/I/71FDQXPDxvL.jpg)
![LE LEMATEC Spray Gun Regulator with Gauge & Water Separator - 1/4" NPT Inline Air Compressor Filter & Dryer - Precision Air Flow Control Valve for Paint Guns & Pneumatic Tools (150 PSI) - Image 5](https://m.media-amazon.com/images/I/71KXWpGQNyL.jpg)

## Questions & Answers

**Q: "Does this actually regulate pressure, or just flow rate?"**
A: Both. The AI303-R1 uses a valve-based regulation system that controls airflow to maintain your set pressure up to 140 PSI. It's designed for continuous-flow tools like spray guns, plasma cutters, and airbrushes where it excels at stable delivery.

**Q: "Will this restrict airflow for my HVLP spray gun?"**
A: No. The AI303-R1 handles high-flow needs with minimal restriction. It works successfully with HVLP, LVLP spray guns, detail sprayers, and tools needing sustained air volume. $1/4$ NPT fittings support professional flow rates.

**Q: "What tools is this compatible with?"**
A: Works with spray guns (HVLP/LVLP), plasma cutters, airbrushes, sanders, nail guns, blow guns, and detail tools. Compatible with any pneumatic tool rated up to $140$ PSI with $1/4$ NPT connections. Ideal for clean, moisture-free air applications.

**Q: "How do I know when to drain the collected moisture?"**
A: The transparent bowl shows real-time water accumulation. In humid climates, check every 30-60 mins. Press the red button for instant purge. Regular draining maintains filtration and prevents water from reaching your tools.

**Q: "Is the filter element replaceable or cleanable?"**
A: The 1-micron element is reusable and cleanable - no expensive replacements needed. Release pressure after each session to expel debris. For deep cleaning, disassemble the filter bowl and blow out the element. Only replace if physically damaged.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***G on 18 December 2022*

Although slightly bulky it's a great tool for spraying and regulating on the fly. Love it!

### ⭐⭐⭐⭐⭐ Review
*by Y***S on 22 November 2024*

Excellent produit !

### ⭐⭐⭐⭐⭐ Review
*by T***O on 3 August 2025*

Ayuda mucho con el filtrado del agua

## Frequently Bought Together

- LE LEMATEC Air Compressor Regulator & Air Compressor Water Separator with Gauge. Air Compressor Filter AI303-R1
- LE LEMATEC Air Compressor Swivel Connector, 360 Degree Swivel Air Hose Fitting, Quick Connect 1/4" NPT Male Adapter & Teflon Tape, Air Fitting For Air Tools, Sandblaster and HVLP Paint Spray Gun
- 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

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-04*