The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle of 0 ° ~ 90 °. When it rotates to 90 °, the valve is fully open. Butterfly valve has the advantages of simple structure, small volume and light weight. It is only composed of a few parts. Moreover, it can be opened and closed quickly by rotating 90 °, and the operation is simple. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body. Therefore, the resistance generated through the valve is very small, so it has good flow control characteristics and can be used for regulation.

As a component used to realize the on-off and flow control of pipeline system, midline butterfly valve has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower and so on.

1. Polytetrafluoroethylene lined butterfly plate and silicone rubber valve seat ensure that the valve has light operation, good sealing performance and long service life;

2. It can be cut off or adjusted quickly; Use of flow;

3. The closed connection ensures that the valve shaft does not contact with the medium in the flow channel