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Pneumatic quick action on off/cut off stainless steel valve

Pneumatic quick action on off/cut off stainless steel valve

Short Description:

Pneumatic On Off  control valve  is used for shuting off function for low water,steam,oil,gas and other industry steam , the body can adopt globe structure, butterfly valve structure, ball valve structure,Pneumatic On Off Control Valve is equipped with multi-spring diaphragm actuator, with small size &large output force feature;Pneumatic On Off Control Valve is applicable for high temp, low temp & small pressure differential of front-after valve with requirement of high closure performance and reliability.

Product Detail

Product Tags

Pneumatic quick action on off/cut off valve specification

Pneumatic on off control valve
Body type:

straight through casting globe type

Spool type:

non-balanced type or balanced type

Nominal size:

DN20~200,、 NPS 3/4〞~ 8〞

Nominal pressure:

PN16 ~ 100、 CLASS 150LB ~ 600LB

Connection: flange:




Flange dimension:

According to to IEC 60534

Pneumatic On Off control valve Bonnet type:

Ⅰ:standard type(-20℃~230℃)
Ⅱ:Radiator type: (-45℃~ high than 230℃ occasion)
Ⅲ:Low temperature extended type(-196℃~ -45℃)
Ⅳ:Bellow seal type
Ⅴ:Warm insulation Jacket type


V type PFTE packing, flex. graphite packing, etc.


Metal graphite packing


Pneumatic: multi-spring diaphragm actuator, piston type actuator.

Pneumatic quick action on off/cut off valve Material

Component name

Control Valve Material



Valve spool/Seat

304/316/316L(overlaying stellite alloy)


Normal:-196~150℃ is PTFE,RTFE,>230℃ is flexible graphite


Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket

Diaphragm Cover



NBR with reinforced polyester fabric



Control valve stem


Pneumatic quick action on off/cut off valve performance

Pneumatic single seat control valve
Flow characteristic

quick open

Allowable range

50: 1 (CV<6.3 30: 1)

Rated Cv value

Percentage CV1.6~630 ,linear CV1.8~690

Pneumatic control valve Allowable leakage

Metal seal:  IV grade(0.01% rated capacity)
Soft seal:  VI grade(foam grade)
Leakage standard:  GB/T 4213

Pneumatic On Off Control Valve Performance

Intrinsic error %


Return difference, %


Dead zone, %


Difference from beginning to end point, %


Rated travel difference, %


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