First, before use, water should be used to clean the pi […]
First, before use, water should be used to clean the pipeline and the valve body overflow to prevent residual iron filings and other debris from entering the valve body cavity.
2. When the ball valve is closed, some medium still remains in the valve body, and it is also under a certain pressure. Before repairing the ball valve, close the shut-off valve in front of the ball valve, open the ball valve that needs 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, the power and air supply should be disconnected first.
three,. Generally, soft-sealed ball valves use PTFE as the sealing material, and hard-sealed ball valves are made by surfacing metal. If the pipeline ball valve needs to be cleaned, care must be taken to prevent damage to the seal and leakage during disassembly.
4. When disassembling and mounting flange ball valves, the bolts and nuts on the flange should be fixed first, then all the nuts should be slightly tightened, and finally firmly fixed. If the individual nuts are forcibly fixed first, and then the other nuts are fixed, the flange surface will be damaged or cracked due to uneven lining, which will cause the leakage of the medium from the valve flange butt.
Fifth, the pneumatic ball valve reminds that if the valve is cleaned, the solvent used must not conflict with the parts to be cleaned, and it does not corrode. If it is a gas ball valve, it can be cleaned with gasoline. Other parts can be washed with water. When cleaning, you must thoroughly clean the residual dust, oil and other attachments. If it cannot be cleaned with water, you can use a targeted cleaning agent such as alcohol without damaging the valve body and parts. After cleaning, wait until the cleaning agent has completely evaporated before assembly.
6. If there is a slight leak in the packing during use, you can slightly tighten the stem nut until it stops leaking. Do not continue tightening.
7. Long-term storage in the open air will cause the valve body and components to rust and cannot be used normally. The ball valve should be protected from rain, water and moisture during storage, and the flange cover must be tightly closed. Valves stored for more than 12 months should be retested during use to ensure stable performance.