1/4" Air filter with regulator AI303-R1
2 in 1 combined air filter with a pressure regulator that is lightweight and space-saving.
Removes water vapor, dirt, dust, and oil vapor from air lines.
Equipped with a Drain Valve for easy maintenance.
Optimal for use with spray painting guns, air tools, and other applications.
1/4" inlet and outlet with a swivel connector for easy installation.
Displays pressure in PSI/BAR units for convenience.
The universal thread swivel nut makes it easy to adjust the air pressure according to your needs.
AI303-R1/R1A Professional 2-in-1 Filter Regulator
Eliminate fragmented pneumatic setups with a unified moisture-control and pressure-stability asset. Designed to support point-of-use moisture control and pressure stability; confirm filtration performance and operating conditions for the target application.
I. The Rework Liability: Why Point-of-Use Regulation Fails
In high-throughput automotive finishing and industrial MRO, the greatest efficiency drain is secondary condensation and pressure drift. Standard filters often pass water vapor under load, leading to fish-eye defects and internal tool rust. The AI303-R1 series solves this by consolidating high-efficiency filtration with a stable diaphragm-style regulator into a single, high-durability chassis.
▲ Strategic Catalog: The AI303-R1 is the core of modern professional air management.
II. Technical Engineering Logic
Designed to trap water vapor, dirt, and oil mist at the critical tool intake. Prevents contamination in HVLP spray guns and protects internal rotors from oxidation.
Features a visible pointer scale with dual PSI/BAR units. The integrated regulator maintains stable airflow volume, even when compressor tank levels fluctuate.
Constructed with impact-resistant housing and a real glass-surface gauge logic. Resistant to chemicals and solvents used in high-intensity paint booths.
The R1A model includes a universal swivel nut, allowing technicians to orient the gauge for maximum visibility without twisting high-pressure air lines.
B2B Strategic OEM Partnership
III. Technical Procurement Summary: 2-in-1 Air Filter Regulator with Pressure Gauge
For procurement teams comparing a 2-in-1 air filter regulator with pressure gauge, verify the selected R1 or R1A configuration, connection standard, drain method, pressure requirement, and installation point before sampling.
| Model Identifier | AI303-R1 / R1A (Swivel) |
|---|---|
| Pressure Units | PSI / BAR Dual Scale |
| Inlet / Outlet | 1/4" NPT / PT Universal |
| Drain Type | Manual Rapid Release Valve |
| Material Grade | Metal Alloy & Reinforced Polymer |
| Compatibility | Spray Guns, Sanders, Plasma Cutters |
| Manufacturing | Taiwan Engineered & QC |
Model: AI303-R1A (Swivel)
Model: AI303-R1 (Standard)
Choose the Right LEMATEC Air-Control Configuration
Choose this 2-in-1 configuration when point-of-use filtration and pressure regulation are both part of the requirement.
Review AI303-R1/R1AChoose AR-01 when the main need is local pressure adjustment with a dual BAR/PSI gauge, without an integrated filter story.
Compare AR-01Choose DAR01B when digital pressure visibility and multiple pressure units are more important than combined filtration.
Compare DAR01BSelection boundary: AI303-R1/R1A is not automatically required for every pneumatic tool. Confirm the tool's air-quality, pressure, drain, connection, and installation requirements before specifying a 2-in-1 unit.
Technical Verification FAQ
It combines point-of-use filtration and pressure regulation in one product configuration. Confirm the exact filter element, drain behavior, and operating conditions for the selected model.
No. Suitability depends on the air-quality requirement, installation point, drain method, and the tool or spray-gun system. Confirm the configuration before procurement.
The supplied specification identifies R1A as the swivel version and R1 as the standard version. Confirm the required orientation and thread standard when requesting a sample.
The supplied page states that OEM/ODM, logo marking, housing color, packaging, sample, and technical-document discussions are available for distributor programs.
Secure Your Production Air Path.
Whether you are a global brand owner or a tier-1 distributor, the AI303 series is your strategic pneumatic defense asset.
© 2026 LEMATEC. All rights reserved. Precision Air Path Innovation from Taiwan to the World.
*This air filter regulator combo features a built-in oil and water separator that filters up to 99.9% of moisture and dirt and converts it into purified air for premium output. It features a quick-release valve that drains away trapped dirt, water, and oil for easy cleaning.
*This air filter regulator is lightweight and small, can be installed conveniently in tight compressed air installations, and does not affect the weight of your air tools, so you can easily maneuver it without any problems.
*The regulator assembly in our compressed air filter regulators features easy-to-read gauges that measure 1~10 BAR and 0~140 PSI. Its universally threaded swivel nut allows for easy air pressure adjustment.
Why choose our new air filter with the regulator? More lightweight and easy to use? Optimize Your Air Tools with the Lematec Air Filter and Regulator Combo!
*The pressure gauge is made of a metal shell and glass surface.
*Pressure relief valve drains out any water trapped inside.
*Ideal for use on paint spray guns, pneumatic tools, plasma cutters, and other airline applications to capture excess water in the air and regulate air pressure/flow.