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ZMQM pneumatic film sleeve cut-off valve





 ZMQM pneumatic film sleeve cut-off valveZMQM.jpg

Drawing  of  ZMBQ Pneumatic membrane cut-off valve


ZMQM pneumatic film sleeve cut-off valve adopts top oriented structure, with many spring actuators.

Cut-off valve from receiving instnanent adjustments signals, cutting, open or change the flow direction of medium, reach of pressure, flow, liquid level parameters automatic control. Widely used in petroleum, chemical, metallurgical, power, light industry and textile and the various departments of industry automatic control and production process YunCheng control system.

This series product nominal pressure rating has PN10, 16, 40, 46, nominal diameter scope four their ~ 200mm. Suitable fluid temperature by - 60 ~ 450 °C. Leakage level to level IV or VI level. Flow characteristics for quick opening.


Cut-off valve adopts multiple spring actuators and adjusting mechanism with three pillars, the whole set connected height can be reduced by about 30%, weight can reduce about 30%.
So the body fluid mechanics principle designed according to the non-equal low flow resistance port, the rated flow system number is increased by 30%.
So trims the sealing parts have strict type and soft seal two kinds, strict type for surfacing welding cemented carbide, soft seal type for qualitative material is made, shut down into good sealing.
So with balancing valve internals and improves the cut-off valve of allowable differential pressure.
So bellows seal type of mobile stem formation completely sealed, plugging away medium leak of possibility.
So piston actuators, operation, use differential pressure great strength. 

part  material

The valve body, sealing sleeve: HT200, ZG230-450, ZG1Cr18Ni9Ti, ZG1Cr18Ni12MO2Ti
Valve disc, seat: 1Cr18Ni9T, OCr18Ni12MO2Ti, 1Cr18Ni9Ti surfacing company too lai alloy
Sleeve, plug: 1Cr18Ni9T, OCr18Ni12MO2Ti, 1Cr18Ni9Ti surfacing company too lai alloy
Packing: teflon, flexible graphite
Corrugated diaphragm: butadiene acrylonitrile rubber clip enhance polyester fabric
Spring: 60Si2Mn
Stem, push-rod: 2Cr13, 1Cr18Ni9Ti
Valve disc, plug (soft piece) : increases ptfe
Bellows: 1Cr18Ni9Ti