Vacuum valve has four basic forms of wear and tear

Vacuum valves have four basic forms of wear

(1) wear particles;

(2) Cavitation:

(3) wear and corrosion effects;

(4) Impact of high flow rate liquid. The method of eliminating, reducing wear, or shifting wear to non-critical parts varies with the form of wear.

Several reasons for the increase in vacuum valve leakage:

1. The leakage is large when the valve is fully closed.

1The spool is worn and the internal leakage is serious.

2 valve is not adjusted well, not tight.

2. The valve does not reach the fully closed position.

1 The pressure difference of the medium is too large, the rigidity of the actuator is small, and the valve is not tight;

2 There are foreign objects in the valve;

3 bushings are sintered.