How to prevent the accumulation of impurities in the vacuum valve

How does a vacuum valve prevent the accumulation of impurities?

The valve is often operated to prevent the accumulation of impurities on the valve seat or the ball surface, and to avoid excessive local wear of the valve seat inlay.

(1) Opening and closing time requirements. If the valve switch is too fast, the valve will be over-torque and the valve stem will be damaged. If the switch is too slow, the valve seat surface will be washed away by the medium for a long time. Therefore, the operation time should be kept within a suitable range. According to experience, The valve's switching time (seconds) is controlled by the lower limit of the valve's nominal size (inches), and the upper limit can be estimated by 5 times the valve's nominal size (inches).

(2) The valve is in the operational state, the ball should be fully open or fully closed, and should not be in the half-open or semi-closed position to avoid damage to the valve seat.