One Way Valve Quick Coupler Compressor Connector Male-Female | Best Fitting

One Way Valve Quick Coupler Compressor Connector Male-Female – Fill nipple for your HPA or PCP setup

This one-way valve quick coupler has been specially developed for efficiently filling PCP air rifles and HPA systems. The smart design with integrated check valve prevents air pressure from flowing back from the cylinder to the compressor, significantly improving the safety and efficiency of the filling process.

Technology and application

This fill nipple features both a male and female connection for direct in-line installation between compressor and cylinder. The maximum working pressure is 300 bar / 4350 PSI, which is more than sufficient for all common PCP and HPA applications. What makes this accessory unique is that you can open the cylinder valve directly without first building up line pressure. As soon as the compressor pressure equals the cylinder pressure, the internal valve opens automatically for unobstructed filling.

Ease of use and integration

This accessory is mounted directly between your fill hose and cylinder. The quick-coupler connections allow for fast connections without tools. After filling, we recommend venting both sides of the fitting before disconnecting it—this prevents pressure build-up and extends the lifespan of the O-rings. The construction from the United Kingdom ensures durability under high pressure.

Who is this fill nipple intended for?

This product is ideal for PCP shooters who fill their air rifle with a compressor, airsofters with HPA replicas operating with external high-pressure systems, and technicians who regularly fill cylinders. Especially with frequent filling cycles, this one-way valve saves time and prevents unnecessary wear on the compressor and filling set due to backflowing air.

Ready to add the One Way Valve Quick Coupler Compressor Connector Male-Female to your setup?