Safety Valve, Hard Seat, (M) NPT Inlet (In. ) 1/8 in, (F) NPT Outlet (In. ) 1/4 in, Preset Setting (PSI) 175 psi, 149 cfm Rated CFM @ Set Pressure, Max. Temp. (F) 400 Degrees F, Brass Body Material, Stainless Steel Seal, Stainless Steel Ball, 17-7 SS Spring, Brass Seat, Standards ASME Boiler and Pressure Vessel Code Section VIII Division 1, PED 2014/68/EU ( CE), ISO 9001, CRN, Air, Gas