| Pneumatic quick shut-off valve by a pneumatic piston actuator and low flow resistance, cutting mechanism composed of a double sealing structure, the actuator movement speed, thrust, with a spring return function, with hand operation mechanism; the valve passage unobstructed flow coefficient large, flexible and rigid valve seat cascade double seal. Novel and unique structure, so that the product has become a kind fast action, tight close off, safe and reliable, high-performance new shut-off valve. Off valve body sealing surface materials can be divided into hard seal and soft seal; spool type structure can be divided by a single guide plate and single-oriented balanced. It has a simple structure, reliable operation, tight cut, fast switching characteristics. Applicable to non-granular, free of impurities gas, liquid medium, requiring fast tight shut, rapid venting and emergency shut-off of the working conditions. This product is excellent performance, complete specifications, small size, light weight, etc., it is widely used in automatic control systems in chemical, petroleum, metallurgy, textile and other industrial production process. |
