Male quick disconnect also known as a fill valve. This device gives the airgunner an easy way to attach a fill hose to their PCP gun for filling. The Ninja male quick disconnect is commonly found on a lot of the PCP airguns on the market today. Due to our heat-treated and hardened steel design this fitting will not mushroom out as fast as other manufacturers. We sell this in two versions, the male fitting by itself for applications where the one way valve is not needed, or with the one way valve. The one way valve uses a replaceable oring to ensure that once it’s installed, the air will only flow one way.