What should I do if the valve is not tightly closed? What are the handling methods
Release time:
2024-04-09
Reasons for general valve failure to close tightly or tightly: (1) There are impurities stuck on the sealing surface, which deposit at the bottom of the valve or cushion between the valve disc and valve seat. (2) Rust on the valve stem thread prevents the valve from rotating; (3) The sealing surface of the valve is damaged, causing leakage of the medium; (4) The poor connection between the valve stem and valve disc causes the valve disc and valve seat to deviate and cannot be tightly contacted.
Reasons for general valve failure to close tightly or tightly:
(1) There are impurities stuck on the sealing surface, which deposit at the bottom of the valve or cushion between the valve disc and valve seat.
(2) Rust on the valve stem thread prevents the valve from rotating;
(3) The sealing surface of the valve is damaged, causing leakage of the medium;
(4) The poor connection between the valve stem and valve disc causes the valve disc and valve seat to deviate and cannot be tightly contacted.
Methods for handling valve failure to close tightly:
1、 There are impurities blocking the sealing surface of the valve
Sometimes the valve suddenly cannot be closed tightly, which may be due to impurities sticking between the sealing surfaces of the valve. At this time, force should not be used to close it forcefully. The valve should be slightly opened larger, and then tried again and again. Generally, it can be ruled out. Otherwise, inspection should be carried out, and the quality of the medium should be kept clean.
2、 Stem thread embroidery:
For valves that are usually in the open state, when accidentally closed, the valve stem thread may have rusted and may not close tightly. For this situation, the valve can be opened and closed several times, and at the same time, the bottom of the valve body can be struck with a small hammer to tightly close the valve without the need for grinding and repair.
3、 Damaged valve sealing surface:
For situations where the switch cannot be closed tightly after multiple attempts, it means that the sealing surface is damaged and should be reported for repair; Or if corrosion or particle scratches in the medium damage the sealing surface, it should also be reported for repair.
4、 Poor connection between valve stem and valve disc:
Regularly add lubricating oil to the valve stem and valve stem nut to ensure flexible opening and closing of the valve.
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