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
Leakage	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.

Electric control valve