Brand new 1/2" PA-24 Load Genie self unloading check valve for air compressors. As the compressor discharge pressure increases the flow capacity decreases. This check valve / unloader can be used in a wide variety of applications. This valve features 1/2" male NPT threads to connect to your tank as well as 1/2" female NPT threads for the inlet. When installing this part it is important to be careful with how much you tighten it and where. When installing this check valve into the tank of your air compressor, make sure that you tighten the bottom part of the valve (as shown in the photos above). It is important to make sure that you have a good seal; however, over tightening this valve can bend the internal parts and ruin the valve. Make sure that you do NOT overtighten this valve during install.