---
product_id: 38606246
title: "LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B)"
brand: "le lematec"
price: "€ 68.11"
currency: EUR
in_stock: true
reviews_count: 9
category: "Le Lematec"
url: https://www.desertcart.sk/products/38606246-le-lematec-digital-air-pressure-regulator-with-locking-valve-air
store_origin: SK
region: Slovakia
---

# Digital Display up to 160 PSI Replaceable Battery Precision Locking Valve LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B)

**Brand:** le lematec
**Price:** € 68.11
**Availability:** ✅ In Stock

## Summary

> 🎯 Master Your Airflow, Master Your Craft

## Quick Answers

- **What is this?** LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B) by le lematec
- **How much does it cost?** € 68.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/38606246-le-lematec-digital-air-pressure-regulator-with-locking-valve-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

- • **Built to Last 💪:** Durable aluminum construction resists workshop wear and tear, making it your go-to regulator for years.
- • **Cost-Savvy Power 🔋:** Replaceable battery keeps your digital gauge running without costly replacements—smart, sustainable, and reliable.
- • **Plug & Play Installation 🔧:** Inline design with 1/4 NPT threading guarantees quick setup and seamless integration with your air compressor.
- • **Lock in Perfect Pressure ⚙️:** Precision locking valve prevents air slip and leakage, ensuring flawless tool performance every time.
- • **Crystal Clear Digital Readout 📊:** Easy-to-read display offers real-time, ultra-precise pressure monitoring up to 160 PSI for ultimate control.

## Overview

The LE LEMATEC Digital Air Pressure Regulator (DAR03B) is a compact, inline 1/4 NPT airflow regulator designed for professional-grade air compressors, HVLP spray guns, and pneumatic tools. Featuring a precision locking valve to prevent air slip, a clear digital display adjustable up to 160 PSI, and a replaceable battery, it ensures consistent, accurate pressure control. Its durable aluminum build and easy installation make it an essential upgrade for pros and DIYers seeking reliable, precise air pressure management.

## Description

Tools Redefined LE LEMATEC: Leading and trusted in air compressor tools. Experience unmatched quality and innovation. Engineered Excellence Visit the Store Engineered Excellence Visit the Store Precision Sandblasting Experience smooth, efficient sandblasting with LE LEMATEC's advanced tools. Perfect for precise, clean results every time. Precision Sandblasting Experience smooth, efficient sandblasting with LE LEMATEC's advanced tools. Perfect for precise, clean results every time. Reviving the Past Le Lematec Sandblasters in Action on Restoration Wonders Reviving the Past Le Lematec Sandblasters in Action on Restoration Wonders Pool Tile Cleaning Le Lematec Sandblasters at Work on Flawless Surface Cleaning Pool Tile Cleaning Le Lematec Sandblasters at Work on Flawless Surface Cleaning Auto Paint Prep Breathing New Life into Classic Treasures Auto Paint Prep Breathing New Life into Classic Treasures Highly Rated Products Visit the Store Highly Rated Products The LE LEMATEC logo symbolizes excellence in air compressor tools, embodying innovation and precision. Representing top-tier pneumatic solutions, it's ideal for professionals and DIY enthusiasts. This emblem signifies reliability, enhancing productivity in various tasks with advanced functionality.

Review: Item allows variable Psi adjustments and works well! - Item comes with manual for detailed instructions, is able to connect with standard 1/4 inch NFT threads. However the lower adapter comes loose to push-fit the inner ring with screwed on pressure. Mechanics thread tape is needed to secure air leaks, although it became fussy and difficult to stay on as the outer NFT connection is not directly secured by the screw in, it is secured by the “differential pressure applied” by screwing it on. May be fixable by applying head to ring seal as it doesn’t come with a ring seal of its own. Other than that the functions are great and works better than originally thought. I have mine fixed with quick disconnects and reconnects to allow hose and attachments to be taken off and on. As well as an in-line filter for water and oil separation. The Psi adjustments work as well and to specification allowing lower output Psi and higher outputs as well as a button lock.
Review: I know it's not recommended, but they both still work like on day ... - I have this unit on an HVLP gun and also the same but non-locking adjuster unit in my Iwata LPH-80 for doing Cerakote. It works very well and is very well constructed. I am now only going to be using these Lematec gauges/regulators on all my air guns. Simple to use, and appears to hold settings accurately. I've gotten acetone on one of them, and accidentally submerged the other in water during cleanup. I know it's not recommended, but they both still work like on day one.

## Features

- inline air pressure regulator
- Precision Locking Valve: Accurate air pressure control; prevents leakage; essential for paint gun and HVLP regulators.
- Easy Installation: Inline regulator; quick setup; ensures airline stability for consistent air pressure.
- Digital Display: Easy-to-read display; precise monitoring; adjusts up to 160 PSI; ideal for spray guns.
- Replaceable Battery: Features replaceable battery; cost-effective for air compressor regulation.
- Durable Construction: Robust 1/4 NPT air regulator; resists damage; perfect for workshops.
- Wide Adjustment Range: Adjusts up to 160 PSI; precise air pressure control; suitable for inline regulators.
- Locking Regulator: Secure mechanism; essential for HVLP spray guns and pneumatic tools.
- Universal Compatibility: Fits most air compressors and tools; versatile for various regulators.
- User-Friendly Design: Simple controls; easy adjustment and monitoring; great for pros and DIY users.
- High-Performance: Boosts tool accuracy and reliability; optimal for digital spray gun applications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N7SHW9J |
| Best Sellers Rank | #50,982 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #40 in Industrial Pressure Regulators |
| Brand | LE LEMATEC |
| Brand Name | LE LEMATEC |
| Connector Type | Threaded |
| Customer Reviews | 4.2 out of 5 stars 363 Reviews |
| Exterior Finish | Metallic Finish |
| Global Trade Identification Number | 00850030726728 |
| Inlet Connection Size | 0.25 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Dimensions | 3.23 x 2.76 x 2.05 inches |
| Item dimensions L x W x H | 3.23 x 2.76 x 2.05 inches |
| Manufacturer | Ubiquitous |
| Manufacturer Part Number | DAR03B |
| Material | Aluminun |
| Material Type | Aluminun |
| Maximum Pressure | 140 Pound per Square Inch |
| Model Number | DAR03B |
| Number of Ports | 2 |
| Outlet Connection Size | 0.25 Inches |
| Outlet Connection Type | NPT |
| Size | 7 x 8.2 x 5.2 inches |
| Specification Met | ASME, ANSI, CE |
| Thread Size | 1/4 NPT |
| Thread Type | NPT |
| Unit Count | 1 Count |
| Valve Type | Needle Valve |

## Product Details

- **Brand:** LE LEMATEC
- **Exterior Finish:** Metallic Finish
- **Inlet Connection Size:** 0.25 Inches
- **Inlet Connection Type:** National Pipe Tapered
- **Item dimensions L x W x H:** 3.23 x 2.76 x 2.05 inches
- **Material:** Aluminun
- **Maximum Operating Pressure:** 140 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.25 Inches
- **Outlet Connection Type:** NPT

## Images

![LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B) - Image 1](https://m.media-amazon.com/images/I/61j6ANDTSmL.jpg)
![LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B) - Image 2](https://m.media-amazon.com/images/I/81x2llU+zEL.jpg)
![LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B) - Image 3](https://m.media-amazon.com/images/I/710+4ohgBxL.jpg)
![LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B) - Image 4](https://m.media-amazon.com/images/I/711K-ewNytL.jpg)
![LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B) - Image 5](https://m.media-amazon.com/images/I/817Gb-W+xbL.jpg)

## Available Options

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

## Questions & Answers

**Q: What's the difference between the DAR03B and DAR01B?**
A: Both are 0.5 PSI digital regulators. The DAR03B adds a LOCKING VALVE to hold pressure steady against vibration, ideal for pro tasks (spray painting, plasma cutting). The DAR01B lacks a lock, making it best for general use.

**Q: How long does the battery last?**
A: The CR2032 battery provides 1000+ hours of active display use. At typical workshop usage (2-4 hours per day), expect 6-12+ months per battery. Replacement CR2032 batteries cost under $2 and are available at any hardware store, pharmacy, or online.

**Q: How accurate is the digital pressure reading?**
A: The DAR03B reads in 0.5 PSI / 0.05 Bar / 5 kPa increments for pro-grade precision. Its digital display eliminates the guesswork of analog gauges, exceeding the precision needs for most air tool applications.

**Q: Why ABS instead of metal construction?**
A: ABS is chosen for regulator housings because it's chemical-resistant against oils/moisture, lightweight to reduce connection strain, and impact-resistant to survive drops better than cast metal. It's used in pro tool housings

**Q: What tools is this compatible with?**
A: Using standard 1/4" NPT connections, the DAR03B fits virtually all pneumatic tools: spray guns, sandblasters, plasma cutters, airbrushes, nailers & more. Its operating range is 0-160 PSI / 0-11 Bar.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Item allows variable Psi adjustments and works well!
*by M***Z on September 16, 2021*

Item comes with manual for detailed instructions, is able to connect with standard 1/4 inch NFT threads. However the lower adapter comes loose to push-fit the inner ring with screwed on pressure. Mechanics thread tape is needed to secure air leaks, although it became fussy and difficult to stay on as the outer NFT connection is not directly secured by the screw in, it is secured by the “differential pressure applied” by screwing it on. May be fixable by applying head to ring seal as it doesn’t come with a ring seal of its own. Other than that the functions are great and works better than originally thought. I have mine fixed with quick disconnects and reconnects to allow hose and attachments to be taken off and on. As well as an in-line filter for water and oil separation. The Psi adjustments work as well and to specification allowing lower output Psi and higher outputs as well as a button lock.

### ⭐⭐⭐⭐⭐ I know it's not recommended, but they both still work like on day ...
*by C***L on April 30, 2018*

I have this unit on an HVLP gun and also the same but non-locking adjuster unit in my Iwata LPH-80 for doing Cerakote. It works very well and is very well constructed. I am now only going to be using these Lematec gauges/regulators on all my air guns. Simple to use, and appears to hold settings accurately. I've gotten acetone on one of them, and accidentally submerged the other in water during cleanup. I know it's not recommended, but they both still work like on day one.

### ⭐⭐⭐⭐ This little gauge is pretty awesome. Some may say it doesn't exactly work ...
*by B***. on September 12, 2017*

This little gauge is pretty awesome. Some may say it doesn't exactly work with pressure standards but that may be because they are working with inferior compressors. With a large compressor and knowing how much tank pressure you have definitely helps when to stop spraying or using any tool. This gauge works well to limit and know the pressure at which you are using near the tool. I like it because if you have a sensitive tool or a job you want to stay at a specific air pressure for then this works awesome.

## Frequently Bought Together

- LE LEMATEC Digital Air Pressure Regulator with Locking Valve for Air Slip Prevention, 1/4 NPT Inline Airflow Regulator Up to 160 PSI for Air Compressor, HVLP Spray Paint Gun & Pneumatic Tools (DAR03B)
- 15-PC Air Compressor Hose Fitting Kit with Storage Case, 1/4" NPT Quick Connect Fittings, Solid Brass High-Flow Connectors, 3 Male & 3 Female Plugs + 5 Dual Plug Connectors
- 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 Slovakia*
*Store origin: SK*
*Last updated: 2026-05-19*