The working concept of pneumatic butterfly valve is relatively simple, and it is easy for people to understand and grasp. First, install the butterfly panel in the vertical direction of the pipe diameter. In the cylindrical channel of the valve body, the disc shaped butterfly panel will rotate around the valve axis, and the transfer angle range is 0 to 90 degrees. When the valve rotates to 90 degrees, it is fully open, The result of this new type of valve is relatively simple. It is small in size and weight, and contains very few parts. It can be assembled with only a few parts. The operator only needs to rotate it to 90 degrees to realize the quick opening and closing of the valve panel. The operation is very simple.

2. Connection between valve and electric equipment Connection type and dimension of valve and electric equipment shall conform to national standards: connection of multi reversing valve driving equipment (GB/T12222-1989), connection of reversing valve driving equipment (GB/T12223-1989).