Butterfly valves are used in a wide range of applications and are suitable for flow regulation. Because the butterfly valve has a large pressure loss in the pipeline, it is about three times that of the gate valve. Therefore, when selecting a butterfly valve, the influence of the pressure loss of the piping system should be fully considered.

The butterfly valve is suitable for flow regulation. Since the pressure loss of the butterfly valve in the pipeline is relatively large, it should also be considered that the butterfly plate is subjected to the firmness of the pressure of the pipeline medium when it is closed.

The butterfly valve has a small flow resistance when fully opened. When the opening is between about 15° and 70°, sensitive flow control is possible, so the application of butterfly valves is very common in the field of large-diameter adjustment.

The butterfly valve is a simple regulating valve. The butterfly valve that can be used for the switching control of the low-pressure pipeline medium refers to a valve in which the closing part (the valve flap or the butterfly disc) is a disc and rotates around the valve shaft to open and close.