3、 This type of valve has quite reliable performance and superior performance, which is one of the reasons why many industrial enterprises choose to use electric on-off butterfly valves. 　　

Operating principle of pneumatic butterfly valve The butterfly plate is driven by the valve stem. If it turns 90 °, it can be opened and closed once. Change the deflection angle of the butterfly plate to control the flow of the medium. The commonly used butterfly valves are wafer type butterfly valve and flange type butterfly valve. Wafer type butterfly valve uses stud bolts to connect the valve between two pipe flanges. Flange type butterfly valve has flanges on the valve, and bolts are used to connect the flanges on both ends of the valve to the pipe flanges. Pneumatic butterfly valve (English: butterfly valve) refers to a kind of valve whose closing part (valve disc or butterfly plate) is a disc, which rotates around the valve shaft to open and close. It is mainly used to cut off and throttle the pipeline.