... pneumatic gate valve.3, resolved single cylinder pneumatic gate valve's disadvantage- the gate stuck in the valve body, ... Gate valve body: WCB, LCB, LCCGate valve wedge : WCB, LCB,LCCGate valve shaft : F6, 410 S.S.Gate valve seat : WCB+1Cr13, WCB+ STL 6 Valve top flange ... size : according to electric actuator size Applicable standard for Valve ...