1/4" Air Compressor Filter Water Oil Separator with Drain Valve – Model AI-304

1/4 inch air compressor filter with transparent bowl and drain valve for spray paint guns

Inline air moisture separator for compressors with push-button water drain

Pneumatic inline filter trap with clear housing and metal connectors

High-performance air line filter with 1/4 inch NPT inlet and outlet

Lightweight and durable, this 1/4" air inline moisture separator filter effectively removes water, oil, and debris from air lines.

1/4" Air Filter Water Oil Separator with Drain Valve – Model AI-304

LEMATEC offers professional-grade air line filters designed for maximum durability and performance. The AI-304 air compressor filter is engineered to remove moisture, dust, and oil from air lines, ensuring clean airflow for spray painting, pneumatic tools, and industrial applications. Ideal for OEM/ODM private label projects, this Made-in-Taiwan unit combines lightweight usability with industrial-grade materials.

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Product Features

Lightweight Design (Only 118g): Allows easy handling and reduced operator fatigue.
Transparent PC Bowl: Offers instant visual check of water buildup and filter condition.
Metal Inlet & Outlet: Aluminum alloy body with metal connections ensures long-term durability.
Push-Button Drain Valve: Quick-release water drainage maintains air line cleanliness.
Stable Operation: Ideal operating range from 90 to 150 PSI; maximum pressure up to 200 PSI.

Specifications

Model: AI-304
Air Inlet/Outlet: 1/4" NPT
Operating Pressure: 90–150 PSI
Max Pressure: 200 PSI
Weight: 118g
Body Material: Aluminum Alloy
Bowl Material: Transparent Polycarbonate (PC)
Drain Valve: Push Button
Origin: Made in Taiwan

Typical Applications

Spray paint gun setups
Pneumatic tool stations
Automotive air systems
Workshop air compressors
DIY and professional garage use

OEM/ODM/OBM Services

LEMATEC provides full customization for international clients, including low MOQs, color and branding customization, packaging design, and multimedia support. Whether you're building your own product line or looking for a trusted manufacturing partner in Asia, we help bring your vision to life with over 30 years of industry experience.

Frequently Asked Questions (FAQ)

What does this air filter remove?

It removes water vapor, oil mist, dust, and other contaminants from compressed air lines.

Is the 1/4" NPT size universal?

Yes, 1/4" NPT is one of the most commonly used thread sizes for air compressors and tools worldwide.

How often should I drain the filter?

Check the transparent bowl daily and drain whenever moisture is visible. The push-button valve makes it quick and easy.

Can this filter be used for paint spray applications?

Absolutely. The AI-304 is ideal for paint spray guns where clean, dry air is essential for a smooth finish.

Contact Us

Looking to expand your pneumatic product offerings? Contact LEMATEC today for samples, OEM/ODM inquiries, and partnership opportunities.

Email: sales@lematec.co

Model: AI-304
Air Inlet/Outlet: 1/4" NPT
Operating Pressure: 90–150 PSI
Max Pressure: 200 PSI
Weight: 118g
Body Material: Aluminum Alloy
Bowl Material: Transparent Polycarbonate (PC)
Drain Valve: Push Button

Overview
This video demonstrates how the new LEMATEC’s Air Filter & Water Oil Separator delivers clean, dry, and reliable airflow. The transparent PC cup lets you monitor water buildup at a glance, while the push-button drain makes maintenance fast. A precision filter element traps dirt, debris, and moisture to extend the life of air tools and improve finish quality in spraying, blasting, and cleaning tasks.