Air Safety Valve, Soft Seat, (M)NPT Inlet (In.) 1/2 in, (F)NPT Outlet (In.) 1/2 in, Preset Setting (PSI) 140 psi, 235 cfm Rated CFM @ Set Pressure, Max. Temp. (F) 400 Degrees F, Brass Body Material, Silicone Seal, 17-7 SS Spring, Brass Seat, Standards...