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Common knowledge of installation and maintenance of ball valve

Posted by Bundor valve
Ball valve is a kind of universal valve widely used in the valve. It has a large amount of use and consumes quickly. Reasonable maintenance and repair can not only improve work efficiency, but also reduce maintenance time and save replacement cost. Stable ball valve performance and long life, Bundor Valve introduces some factors that need to be paid attention to when using ball valve:

1. Before use, use water to clean the pipeline and the over-flow part of the valve body to prevent residual iron filings and other debris from entering the valve body cavity.

2. When the ball valve is closed, part of the medium still remains in the valve body, and it is also under certain pressure. Before overhauling the ball valve, close the shut-off valve in front of the ball valve, open the ball valve to be repaired, and completely release the internal pressure of the valve body. If it is an electric ball valve or a pneumatic ball valve, you should first disconnect the power supply and air supply.

3. Generally, soft sealing ball valves use PTFE as the sealing material, and the sealing surfaces of hard sealing ball valves are made of metal overlay welding. If you need to clean the pipeline ball valve, you need to be careful to prevent leakage of the damaged sealing ring when disassembling.

4. When disassembling the flange ball valve, the bolts and nuts on the flange should be fixed first, then all the nuts should be tightened slightly, and finally fixed firmly. If the individual nuts are forcibly fixed first, and then the other nuts are fixed, the gasket surface will be damaged or broken due to uneven force between the flange surfaces, resulting in leakage of the medium at the valve flange joint.

5. If the valve is cleaned, the solvent used must not conflict with the parts to be cleaned or corrode. If it is a special ball valve for gas, it can be cleaned with gasoline. Other parts are generally washed with medium water. When cleaning, the residual dust, oil and other attachments should be thoroughly cleaned. If it cannot be cleaned with clean water, it can be cleaned with alcohol and other cleaning agents without damaging the valve body and parts. After cleaning, wait for the cleaning agent to completely evaporate before assembling.

6. If there is a slight leakage at the packing during use, the stem nut can be tightened slightly until the leakage stops, and the tightening cannot be continued.

7. Long-term storage in the open air will lead to corrosion of the valve body and components, which cannot be used normally. The ball valve should be protected from rain, water and moisture, and the flange cover should be tightly closed. Valves stored for more than 12 months should be retested during use to ensure stable performance.

The above is the general knowledge of the installation, repair and maintenance of the ball valve introduced by Bundor. The ball valve is suitable for municipal construction, water conservancy engineering, electricity, water supply and drainage, water treatment, oil and other working conditions. The scope of application is very wide. If you have more information about the ball valve ,If you have any questions, you can leave us a message, and Bundor Valve will serve you wholeheartedly!