Air Compressor Pilot check valve unloader combination gas discharge - 1/2" FPT TOP INLET X 1/2" MPT OUTLET$$Tools & Hardware Other

Most Commonly used on Gas Powered Air Compressors Set for 140-175 from Factory but can be adjusted 30-40 PSI higher or lower if needed Has a 1/2" Female NPT Air Inlet and a 1/2" Male NPT Air Outlet 1/8" Port on the side for throttle control valve or cable On side, it has a 3/8" Female NPT Outlet to release air once the compressor reaches full pressure