Model &Name: ZSC(H)Wc(Wcs) Series Pneumatic Piston Three Dimensional EccentricRegulating Shutdoff 

Butterfly Valves

Characteristics:Novel, light and ingenious structure,reliable for use, relatively high operation pressure 

differential for Wc with a leakage level of Class VI; Recoil (Wh）≤0.3%×KV;Manual operationavailable for ZSCWc 

with valve position indicator, no manual operation forZSHWc;Double action (Wcs),single action (Wc) and normal 

type (W, Wa) available; Self-cleaning forthe butterfly valve; Soft and hard sealsavailable for the valve 

seats;Suitable for thecontrol of low pressure differential, large diameter, large flow capacity, andthick, 

suspending particle containing medium.

NominalDiameter (DN):50~1500mm

NominalPressure (PN):0.6、1.0、1.6MPa

Operation AirSupply (MPa): 0.4~0.6

OperationTemperature (℃): Wc: -40~+350; Recoil type (Wh): ≤600; W, Wa: -40~+250

Material:WCB, WC9, 302, 304, 316, GH1040

Flange Standards: DN≤500: Wafer Flange;

DN≥600: Flange, JB/T79-94