Air Safety Valve, Soft Seat, (M)NPT Inlet (In.) 1/4 in, Preset Setting (PSI) 325 psi, 275 cfm Rated CFM @ Set Pressure, Max. Temp. (F) 400 Degrees F, Stainless Steel Body Material, Viton Seal, 17-7 SS Spring, Stainless Steel Seat, Standards ASME...