Air Safety Valve, Hard Seat, (M)NPT Inlet (In.) 1/4 in, Preset Setting (PSI) 150 psig, 129 cfm Rated CFM @ Set Pressure, Max. Temp. (F) 400 Degrees F, Stainless Steel Body Material, Stainless Steel Seal, Stainless Steel Ball, 302 SS Spring, Stainless...