automatic exhaust Industrial Valves under the long-term work, its sealing surface damage can occur easily, so what is the cause of damage of automatic exhaust valve sealing?

1。 Sealing surface quality is poor: cracks on sealing surface, clamp design, the defects such as porosity, mainly because the overlaying welding and heat treatment was not well done, cause the sealing surface hardness too high or too much.

2。 Chemical etching, exhaust valve sealing surface chemical reaction and in the surrounding medium.

3。 Improper selection and improper operation: automatic exhaust valve models did not choose good, lead to shut down too fast or closed lax, cause the exhaust valve sealing surface erosion and abrasion.

4。 Electrochemical corrosion, exhaust valve sealing surface contact each other, exhaust valve sealing surface contact with shut down and the body, and the concentration of the medium is poor, poor oxygen concentration, will generate an electrical potential difference, electrochemical corrosion of anode on the one hand, the Industrial Valves sealing surface corrosion.

above are automatic exhaust valve is easy to appear the cause of the sealing surface damage.

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