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Method for handling pneumatic butterfly valve failure

The method of handling when the pneumatic butterfly valve fails:
1. Before installation, confirm that the performance of the air flow direction of the pneumatic butterfly valve and the arrow is the same as the moving condition, and the valve cavity is inserted cleanly. It is not allowed to close the disc and the foreign matter disc with impurities. Before cleaning, the disc must not be closed to avoid damage. Sealing ring.
2, pneumatic butterfly valve flange is recommended to install auxiliary special flange butterfly valve
Installed in the position of the pipe 3, the pneumatic butterfly valve is the best position for the Legislative Assembly, not reversed.
4. The need to use a pneumatic butterfly valve to regulate the flow, with a pneumatic actuator to control.
5. The required connection part of the inspection, that is, the seal is ensured, and the valve stem can be rotated flexibly.
6, pneumatic valve stem installation and use of the valve, check the effectiveness of the use of regular inspections, found that the fault is eliminated.
Pneumatic butterfly valve
Removal of leakage from the sealing surface of the pneumatic butterfly valve:
1, disc, seal with debris surface
2, the disc, the sealing surface is not in the same position
3, the outlet side of the flange bolt structure is uneven
Pneumatic butterfly valve at the end of the surface of the repelling leak:
1, on both sides of the seal gasket failure
2, the pipe flange is not uniform or not tight
3, the seal ring, the gasket failed.

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