NEWS

NEWS


Provide you with information on the valve industry

What should be paid attention to when using the valve ball?

2020-05-26


1. Before use, the pipe and the overflow part of the valve body should be cleaned with water to prevent residual iron filings and other impurities from entering the valve body cavity.
2. When the valve ball is closed, part of the medium remains in the valve body and also bears a certain pressure. Before overhauling the ball valve, close the shut-off valve in front of the ball valve, open the ball valve to be overhauled, and completely release the pressure inside the valve body. If it is an electric ball valve or a pneumatic ball valve, the power and air supply should be disconnected first.
3. Generally, tetrafluoroethylene (PTFE) is used as the sealing material for soft sealing valve ball, and the sealing surface of hard sealing valve ball is made of metal surfacing. If it is necessary to clean the pipe valve ball, be careful not to damage the seal ring and leak during disassembly.
4. When disassembling the flange valve ball, the bolts and nuts on the flange shall be fixed first, then all nuts shall be tightened slightly, and finally fixed with force. If individual nuts are fixed by force first, and then other nuts are fixed, the gasket surface will be damaged or cracked due to uneven internal pressure between flange faces, which will lead to leakage of medium from the valve ball flange butt joint.
5. If the valve ball is cleaned, the solvent used must not conflict with the accessories to be cleaned and not corrode. If it is a special gas valve ball, it can be cleaned with gasoline. Other parts can be cleaned with reclaimed water. During cleaning, the residual dust, oil stain and other attachments shall be thoroughly cleaned. If it is impossible to clean them with clean water, they can be cleaned with alcohol and other cleaning agents without damaging the valve body and parts. After cleaning, the assembly shall be carried out after the cleaning agent is completely volatilized.
6. If slight leakage is found at the packing during use, the valve stem nut can be tightened slightly until the leakage stops, instead of further tightening.
7. Long term outdoor storage will lead to corrosion of valve ball body and components, which will make it impossible to use normally. The valve ball shall be rainproof, waterproof and moisture-proof when stored, and the flange cover shall be tightly covered. The valve ball stored for more than 12 months shall be retested during use to ensure stable performance.


Next —


Related News