Made in USA!! NSG7 95-125 1/2 Compression + 1/2 Male + Muffler Unloader valve (continuous run unloader) for gas & electric powered air compressors 95-125 factory setting. Pressure can be adjusted 30-40 psi up or down 1/2" COMPRESSION TOP Inlet x 1/2" MALE Pipe Thread outlet. Comes complete with hand unloader and muffler/silencer. 18 scfm Rating Piloted discharge check valves combine a pilot valve, a discharge valve, and a check valve into one system used to run an air compressor at a constant speed. They are used on both gas engine and electric motor compressors. Brand new!