How to calculate the feedback control principle of electric wafer soft seal butterfly valve? 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).
、 (6) Check whether the connection position of each part of the pneumatic butterfly valve is compressed. On the one hand, ensure the tightness of the packing, and on the other hand, ensure that the valve stem can rotate flexibly.
