Air Oil Water Separator Filter 1/4" Thread – Moisture Trap Kit

Keep Your Air Lines Clean & Your Paintwork Protected

The Air Oil Water Separator Filter Kit is an essential accessory for anyone using an air compressor, spray gun, or pneumatic tool. Designed with a standard 1/4" thread (JPN interface), this compact inline moisture trap filters out water, rust, pipe scale, and airborne contaminants before they can damage your equipment or ruin a paint job.

Whether you're a home DIY enthusiast or a professional painter, this filter keeps moisture and oil out of your airline, protecting your work and extending the life of your tools.

Key Features

• Universal 1/4" Thread: Fits most spray guns, air compressors, and airline connectors — no adapters needed.
• Effective Moisture Trap: Filters airborne solid contaminants including pipe scale, rust, and condensation from airlines.
• Inline Spray Gun Protection: Connects directly onto your sprayer or into your airline to prevent water from contaminating paintwork.
• Spring-Loaded Drain Valve: Includes a condensation discharge valve at the base for easy, tool-free draining.
• Clear Filter Bowl: Transparent bowl lets you visually monitor moisture and contaminant build-up at a glance — no guesswork required.
• Compact & Portable: Lightweight and handheld design makes it easy to use in any workshop, garage, or job site.
• CE Certified: Meets CE safety and quality standards for your peace of mind.
• Pneumatic (No Battery Required): Purely air-powered — no electrical components to worry about.

What's in the Box?

• 1 × Air Oil Water Separator Filter with 1/4" JPN Thread Interface
• 1 × Spring-Loaded Condensation Discharge Valve

Ideal For

• Spray painting & automotive bodywork
• Home DIY pneumatic tool use
• Woodworking & furniture finishing
• Any air compressor airline requiring moisture protection

Made in Mainland China.

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Useful Resource

For safety guidelines when working with pneumatic tools and compressed air equipment, refer to the OSHA Pneumatic Tools Safety Guidelines.

Learn more: Air compressor

Frequently Asked Questions

Q: What thread size does this air oil water separator use?

A: This separator filter uses a standard 1/4" thread with a JPN interface, which is compatible with the vast majority of spray guns, air compressors, and pneumatic airline fittings available on the market.

Q: How do I drain the collected moisture from the filter bowl?

A: The unit includes a spring-loaded condensation discharge valve at the bottom of the clear filter bowl. Simply press or release the valve to drain accumulated moisture — no tools required.

Q: Can I use this filter for automotive spray painting?

A: Yes! This air oil water separator is specifically designed to prevent water and oil contamination from reaching your spray gun, making it ideal for automotive bodywork, cabinet painting, and any application where a clean, dry air supply is critical for a flawless finish.

Q: Is the filter bowl replaceable or cleanable?

A: The clear filter bowl is designed for easy visual inspection and can be unscrewed for cleaning or replacement when needed, ensuring long-term, reliable performance.