How to prevent the accumulation of impurities in the welding

Writer： admin Time：2021-10-14 22:44 Browse：℃

How to prevent the accumulation of impurities in a welded metal bellows vacuum valve (1) Opening and closing time requirements. Switching the valve too fast will cause the valve to twist and load too much. The valve stem will be damaged; too slow switching will cause the surface of the valve seat to be washed and worn by the medium for a long time. Therefore, the operating time should be kept within an appropriate range. According to experience, The control range of the valve opening and closing time (seconds), the lower limit can be half of the valve nominal size (inch), and the upper limit can be estimated as 5 times the valve nominal size (inch). (2) The valve is called the valve ball when it is in operation. It should be fully open or fully closed, and not in a half open or half closed position to avoid damage to the valve seat."