Day: November 13, 2021

wafterbutterfly valves with nylon coated disc
Peter Lee

The knowledge of wafer butterfly valve

The butterfly disc of the wafer butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0°-90°, which can play a role in flow adjustment. When the butterfly plate rotates to 90°, the valve reaches the maximum Opening. The wafer butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be opened and closed quickly by rotating 90°, and the operation is simple. At the same time, the valve has good fluid control characteristics.

flange type bbutterfly valve 2
Peter Lee

Possible failures of butterfly valves and their elimination methods

1.The sealing surface is leaking, and there is debris in the butterfly plate and sealing ring of the butterfly valve.

2. The butterfly plate of the butterfly valve and the closed position of the seal are not correct.

3. The outlet is equipped with flange bolts that are not compressed or stressed.

4. The direction of the pressure test is not as required.


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