Ball valve is widely used in the valve a common valve, the use of large, fast consumption, so a reasonable maintenance, otherwise it can improve work efficiency, but also can reduce maintenance time and save replacement costs. Want to make the valve performance is stable, long life, you need to pay attention to the following factors: 1. Before use, wash the pipe and valve body overcurrent with water to prevent residual ferrite and other debris from entering the body cavity. 2. Ball valve in the closed state, the valve body remains part of the media, but also to withstand a certain pressure. Before overhauling the ball valve, close the shut-off valve before the ball valve, open the ball valve to be overhauled, and completely release the internal pressure of the valve body. If the electric valve or pneumatic ball valve, you should first disconnect the power and air supply. 3. General soft-sealed ball valves are used PTFE (PTFE) as a sealing material, hard sealing ball valve sealing surface made of metal surfacing. If the pipe ball valve needs to be cleaned, it is necessary to be careful to prevent the seal ring from being leaked during disassembly. 4. Flange ball valve disassembly, the flange bolts and nuts should be fixed, and then all the nuts a little tight, and finally hard fixed. If you forcibly fixed an individual nut, and then the other nuts fixed, between the flange surface due to uneven surface caused by pad damage or rupture, leading to the valve flange docking medium leakage. 5. If the valve is cleaned, the solvent used must not conflict with the parts to be cleaned and will not corrode. If it is a gas valve, you can use gasoline for cleaning. Other parts can be washed with water in general. When cleaning, thoroughly clean the remaining dust, oil and other attachments, such as water can not be cleaned, without damaging the body and components under the premise of targeted cleaning with alcohol and other cleaning agents. After the cleaning is complete, the cleaning agent is completely evaporated before assembly. 6. If found in the use of subtle leakage at the filler, you can slightly tighten the stem nut, tight leaks can stop, can not continue to tighten. 7. Long-term open storage, will cause the valve body and parts of the corrosion, can not be used normally. Ball valve should be stored rain, water, moisture, and the flange cover tightly. Valves stored for more than 12 months should be retested to ensure stable performance.
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