ZSPQ type pneumatic piston cut-off valve parts material have?

ZSPQ type pneumatic piston cut-off valve consists of cutting mechanism with pneumatic piston actuator. Cut the institutions in the form of direct single-seat, 3/4 'valve core is at the top of the guide, DN25 ~ 300 guide for the valve core, has a simple structure, convenient operation and reliable in use, rapid opening and closing, etc. Mainly used in without impurities, no particles of liquid, gas medium, for quick tightly closed, quick exhaust in the automatic control system. Parts material: the body and bonnet: ZG230 - 450; ZG1Cr18Ni9Ti； ZG1Cr18Ni12Mo2Ti valve stem, valve core: 1 cr18ni9 packing: V poly tetrachloroethylene type O sealing ring, oil resistant rubber compression spring: 60 si2mn gasket: 1 cr18ni9 clip asbestos board worm: 45 push rod: 2 cr13