English
中文简体Under normal circumstances, if it is not tightly closed, first confirm whether the valve is closed in place. If it has been closed in place, there is still leakage and cannot be sealed, then check the sealing surface. The sealing pair of some valves is detachable, so take it out for grinding and test again. If it is still not closed tightly, it must be returned to the factory for overhaul or replacement of the brass angle valve, so as not to affect the normal use of the valve and the occurrence of working conditions accidents.
The reasons for the valve not closing tightly are generally as follows:
1. There are impurities stuck on the sealing surface, and the debris is deposited at the bottom of the valve or cushioned between the valve disc and the valve seat.
2. The medium used has crystallization phenomenon.
3. The sealing surface of the valve is damaged, resulting in leakage of the medium.
4. The valve stem and the valve disc are not well connected, so that the valve disc and the valve seat cannot be in close contact with the deflection.
The treatment method of the valve is not closed tightly:
1. Impurities stuck on the sealing surface of the valve: sometimes the valve is suddenly not closed tightly. It may be that there are impurities stuck between the sealing surfaces of the valve. At this time, it should not be forced to close. The valve should be opened slightly, and then try to close again. Try it, it can be ruled out in general, otherwise it should be checked again. The quality of the media should also be kept clean.
2. The valve stem thread is rusted: Usually, when the valve in the open state is accidentally closed, because the valve stem thread has been rusted, it will also happen that the valve is not closed tightly. In this case, the valve can be opened and closed several times, that is, the valve can be closed tightly without grinding and repairing the valve.
3. The sealing surface of the valve is damaged: For the case where the switch is still not tightly closed after trying many times, that is, the sealing surface is damaged, or the sealing surface is damaged by corrosion, particle scratches in the medium, etc., which should be reported for repair. deal with.
