Pneumatic piston butterfly valve

ZMAW / ZSHW Pneumatic butterfly valve(butterfly valve adjustment for short) is a rotary-type control valve, which  be used with the valve positioner, ratio control can be realized. Butterfly valve regulating flow channel resistance, flow coefficient, valve plate and seal body has a unique design, both the two functions with adjustable and cut off . Regulating valve with pneumatic diaphragm with multiple springs or pneumatic piston actuator,be equipped with large output torque, motion sensitive, and use the corner direct instructions and feedback, is widely used in petroleum, chemical industry, papermaking, metallurgical, sewage treatment productive sectors such as gas, steam, liquid pipelines in the medium flow regulation and cut off in order to achieve the production process according to certain specifications. Using F4, F46 lined butterfly valves with pneumatic piston actuator particularly suitable for chemical, food, medicine industry, strong acid, alkali and other corrosive media control; use of rubber lined butterfly valve particularly suitable for lining of food, beverage, pharmaceutical and chemical purity piping and industrial environmental protection, water treatment, high-rise buildings, and water and drain system.

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