Model &Name: ZHA BN（S）, ZS A BN（S） Series Light Small Type PneumaticDiaphragm (Piston) Double-Seat 

(Angle) Control Valves

Characteristics:The actuator is zero adjustable in multi-springs; Small unbalancedforce for Double-seat 

valves, with a large allowable pressure differential,especially suitable for anti-blocking and large flow rate 

situations;Flow path for anglevalve is very simple with no blocking, no adhesive, and very small leakage.

NominalDiameter (DN): Double-seat: 25-300mm;Angle-type: 20-200mm

NominalPressure (PN):1.6、4.0、6.4MPa

Spring Range(kPa):20~100,  40~200,  80~240

OperationTemperature (℃):-29~ +250; -40~ +450

Material:WCB, 304, 316

Flange Standard:JB/T79-94