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Pneumatic shut-off valve

Product description

Form    style

Pneumatic shut-off valve

Nominal diameter

DN15~DN200 (1/2~8)

Nominal pressure

PN10, 16,25,40,50, 64

ANSI Class 150,300,600

Valve and bonnet material

WCB,CF8, CF8M, CF3, CF3M, WC1, WC6, WC9, LCB, LCC , LC3, Hastelloy C, etc.

Internal material

304,304+Stellite,316L, 316L+Stellite ,2205,ha C, etc.

Fill    Material

Teflon; flexible graphite

Traffic Features

Open soon


Hard Seal: IV, V     Soft Seal: Level VI

Connection method

Flange type (RF, MFM, RJ) Weld type (SW, BW)

bonnet type

Standard type, coolingType,Corrugated pipe seal type, low temperaturetype


  • Overview 
  • ZMQ/ZSQ type pneumatic film (piston) shut-off valve has the advantages of light weight, sensitive action, small pressure drop loss, convenient disassembly and assembly.
  • The shut-off valve is connected to the adjusting mechanism by a multi-spring actuator, and the overall height can be reduced by about 30%, and the weight can be reduced by about 30%.
  • The valve body is designed according to the principle of fluid mechanics as an equal-section low-flow resistance flow path, and the rated flow coefficient is increased by 30%.
  • Balanced trims increase the allowable differential pressure of the shut-off valve.
  • The bellows seal form a complete seal against the moving stem, blocking the possibility of leakage from the media.
  • The piston type actuator has a large operating force and allows a large differential pressure.
Corresponding parameter set not found, please add it in property template of background
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