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

Pneumatic butterfly valves are lighter in weight and cost-effective than pneumatic ball valves of the same caliber, and the required actuator torque is also much smaller. Therefore, pneumatic butterfly valves have been widely used in large-diameter cut-off applications 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 in vacuum occasions. If the medium is air or 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 system, such as cement, flour and other materials.