Body : Investment Casted SS-304 / SS-316 /WCB Ball : Mirror Finished. SS-304 / SS-316 Seat : PTFE Teflon Seat. Stem : AISI 304 / 316 Blow –out Proof Stem Ends : Flanged Ends drilled to ANSI B16.5. Pressure Rating : Class # 150 / Class # 300 Face to Face : As per ANSI B16.10 Fire Safe Design Standard : API 607 Wall Thickness : As per ANSI B16.34 Leakage : 100% Tight Shut off. Class VI Leakage. Size 15 MM to 200 MM