What are the main points of pneumatic butterfly valve selection?

Pneumatic butterfly valves are as widely used in automatic control systems as pneumatic ball valves. Pneumatic butterfly valve is equipped with GT cylinder, AT cylinder, or AW cylinder, supplemented by pneumatic accessories (solenoid valve, filter pressure reducing valve, limit switch box, quick exhaust valve, position protection valve, etc.), used for two-position switch control, Because of the good approximate equal percentage flow characteristics of the triple eccentric butterfly valve, the pneumatic triple eccentric butterfly valve is often equipped with an electric valve positioner to adjust the process control. 

Pneumatic butterfly valves are lighter in weight than pneumatic ball valves of the same caliber, cost-effective, and require much smaller actuator torque. Therefore, pneumatic butterfly valves are widely used in large-diameter cut-off occasions where pneumatic ball valves are not competent. However, the sealing performance of the pneumatic butterfly valve is weaker than that of the pneumatic ball valve, so if the leakage requirements are very strict, it is not suitable for selection.       

There are many types of pneumatic butterfly valves, including pneumatic rubber-sealed butterfly valves suitable for normal temperature conditions, pneumatic metal-sealed triple-eccentric butterfly valves suitable for medium-temperature and high-temperature conditions, corrosion-resistant pneumatic fluorine-lined butterfly valves, pneumatic rubber-lined butterfly valves, and pneumatic plastic butterfly valves. There are pneumatic sanitary butterfly valves commonly used in the food and pharmaceutical industries, and pneumatic vacuum butterfly valves for vacuum applications. If the medium is air and flue gas, you can choose pneumatic ventilation butterfly valves and pneumatic flue gas butterfly valves. In addition, pneumatic powder butterfly valves, then Suitable for powder systems, such as cement, flour and other materials. 

The Sanitary Pneumatic Stainless Steel Butterfly Valve produced by Xi'an Changxin Metal Products Co., Ltd. has received good feedback from various customers. We look forward to your purchase of various butterfly valve products from our company.