... your service. Application of pneumatic actuated carbon steel gate valvePneumatic gate valve's performance is reliable, convenient to replace and maintain, ... with single cylinder pneumatic gate valve.3, resolved single cylinder pneumatic gate valve's disadvantage- the gate stuck in the valve ... wedge : WCB, LCB,LCCGate valve shaft : F6, 410 S.S.Gate valve seat : WCB+1Cr13, WCB+ STL 6 Valve top flange ...