Uxcell 4mm Push Quick Connect Inline Air Tube Fitting Check Valve Black

What is this?
The check valve can stop the air from returning back to the air pump or air compressor and keep it in the line. Widely used on the industrial equipment like air source equipment, digit control machine tool, automatic assembly line.

Are there any advantages of the product?
Made from Nickel plated copper and PBT plastic material, high pressure resistance, long service life. Quick Connecting design, push to connect. Direction mark on the body can show you the air flow direction clearly.

How to use it?
Easy to install, push your air tube firmly to connect the check valve.

What should I notice?
When you connect your air tube to our check valve, please make sure the air tube is push firmly. It means that your air tube inside pass through the sealing ring. If the air tube didn't pass through the sealing ring, it might cause a leak or burst.