Pneumatic ball valve is mainly used for truncation or connect piping of mediums, also can use for fluid of adjustment and control, it with other valve class compared advantages:
1, fluid resistance small, ball valve is all of fluid in a kind of least resistance, even shrink diameter ball valve, its fluid resistance also pretty small.
2, thrust bearings reduce friction torque stem, can make the stem long-term operate smoothly flexible.
3, seat tightness performance is good, adopt ptfe etc elastic material made of sealing ring, structure, and easy to seal the valve sealing ball valves with medium pressure of increased ability increases.
4, stem sealing is reliable, because stem will only be shipped as rotation and don’t do lifting movement, stem packing seal was not easy damage, and sealing ability with medium pressure increase.
5, because of ptfe etc material has good self-lubricity, and the friction losses small ball, so ball valve long service life.
6, remove theatrical makeup and costume type valve stem and stem head convex order prevent stem jet, such as the fire caused stem seal destruction, convex order with the valve body between still can form metal contact, ensure stem seal.
7, anti-static function: in the sphere, stem, valve can be set up between spring and switch produced during the electrostatic and export of actuators.
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