气动蝶阀既可以作为调节阀，也可以作为开关阀。它主要由气动执行器和蝶阀组成，蝶板围绕阀杆旋转来实现开启与关闭。根据不同的应用需求，气动蝶阀可以设计成具有调节功能，通过改变阀门开度来调节介质流量，或者作为截断阀使用，即完全开启或关闭介质通道。

　　Pneumatic butterfly valves can be used as both regulating valves and switching valves. It is mainly composed of pneumatic actuators and butterfly valves, with the butterfly plate rotating around the valve stem to achieve opening and closing. According to different application requirements, pneumatic butterfly valves can be designed with regulating functions to adjust the medium flow rate by changing the valve opening, or used as shut-off valves to fully open or close the medium channel.

　　气动蝶阀的特点包括：

　　The characteristics of pneumatic butterfly valves include:

　　结构简单、体积小、重量轻；

　　Simple structure, small size, and light weight;

　　操作方便，通常只需旋转90°即可快速启闭；

　　Easy to operate, usually only need to rotate 90 ° to quickly open and close;

　　良好的流体控制特性，蝶阀处于完全开启位置时，蝶板厚度是介质流经阀体时单一的阻力，产生的压力降很小；

　　Good fluid control characteristics, when the butterfly valve is in the fully open position, the thickness of the butterfly plate is a single resistance when the medium flows through the valve body, resulting in a small pressure drop;

　　可以根据不同的密封要求选择合适的密封型式，如弹性密封或金属密封。

　　Suitable sealing types can be selected according to different sealing requirements, such as elastic seals or metal seals.

　　气动蝶阀广泛应用于石油、煤气、化工、水处理等工业领域，以及热电站的冷却水系统等

　　Pneumatic butterfly valves are widely used in industrial fields such as petroleum, gas, chemical, water treatment, as well as cooling water systems in thermal power plants

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