Body : CI / WCB / CF8 / CF8M Seat Ring : 13% Cr. SS Facing (SS 304) Main Valve Disc : SS 304 / SS 316 Max. Inlet Press. : 17.5 Kg/cm² @ 427°C Reduce Press. : 17% of the inlet press to 5 PSIG Hydro Press. : 35 Kg/cm²