API602 Forged NPT,B.W,S.W Gate Valve.Class 800# Norminal Pressure.Back seat sealing design for online maintenance. Valve Norminal Pressure:Class800# Size:1/2'' to 2'' Valve Connect End:NP,B.W,S.W,Flanged end Valve Body Materials;A105,F5,F11,F304L,F316L,LF2,F22 Valve trims slected as per useage medium.please contact our sales.