How Vacuum Valves Prevent the Accumulation of Impurities?
The frequent operation of the valve can not only prevent impurities from accumulating on the surface of the valve seat or valve ball, but also avoid excessive local wear of the valve seat inlay.
(1) Opening and closing time requirements. Too fast valve switching will cause excessive valve distortion load and damage to the valve stem; too slow switching will cause the valve seat surface to be worn and worn by the medium for a long time. Therefore, the operating time should be kept within a suitable range. According to experience, the range of valve switching time (seconds) control, the lower limit can be estimated by half of the valve’s nominal size (inch), and the upper limit can be estimated by 5 times of the valve’s nominal size (inch).
(2) When the valve is in operation, the valve ball should be fully open or fully closed, and must not be in the half-open or half-closed position to avoid damage to the valve seat.
