Pneumatic quick cut-off valve by pneumatic piston actuators and low flow resistance, double seal structure of cutting mechanism, actuator movement speed, big thrust, has spring reset function, appliance with operating mechanism; The body smooth flow, flow coefficient, the valve core seat flexible and rigid cascade double seal. The structure of the novel and unique, make this product a kind of fast action, tightly closed to cut off the high performance new cut-off valve, safe and reliable.

Cut off the valve core sealing surface materials can be divided into hard seal and soft seal; According to the valve core structure can be divided into single guide plate type and single direction balanced. Has a simple structure, reliable action, carefully cut off, switch, etc. Suitable for granular, impurity gas, liquid medium, requires tightly closed fast, quick exhaust and emergency cut-off condition. This product is excellent performance, complete specifications, the advantages of small volume, light weight, widely used in chemical, petroleum, metallurgy, textile and other industrial production process automation control system.

Pneumatic quick cut-off valve piston parts commonly used materials

Body: ZG230-450, ZG1Cr18Ni9Ti

ZGCr18Ni12Mo2Ti, HT200

Valve core: metal parts: 1 cr18ni9ti, Cr18Ni12Mo2Ti

Soft sealing part: PTFE, graphite + PTFE

Seat: 1 cr18ni9ti, Cr18Ni12Mo2Ti

Stem: 1 cr18ni9ti, Cr18Ni12Mo2Ti, 2 cr13

Spring: 60 si2mn

Iris: nitrile rubber reinforced nylon fabric

Membrane cover: A3

Packing: PTFE, flexible graphite