The precautions for the daily use of the ball valve
are as follows: 1. It is necessary to first find out that the pressure of the upstream and downstream pipelines of the ball valve has been relieved before the disassembly and decomposition operation. 2. Non-metal parts should be removed from the cleaning agent immediately after cleaning, and should not be soaked for a long time. 3. The bolts on the flange must be tightened symmetrically, gradually and evenly during assembly. 4. The cleaning agent should be compatible with the rubber parts, plastic parts, metal parts and working medium (such as gas) in the ball valve. When the working medium is gas, gasoline (GB484-89) can be used to clean metal parts. Clean non-metallic parts with pure water or alcohol. 5. Each single ball valve part that is decomposed can be cleaned by dipping. The metal parts with undecomposed non-metal parts can be scrubbed with a clean and fine silk cloth impregnated with cleaning agent (to prevent the fibers from falling off and adhering to the parts). When cleaning, all grease, dirt, glue, dust, etc. adhering to the wall must be removed. 6. When disassembling and reassembling the ball valve, care must be taken to prevent damage to the sealing surface of the parts, especially non-metallic parts. Special tools should be used when taking out the O-ring. 7. After cleaning, it needs to be assembled after the cleaning agent on the wall to be washed has volatilized (can be wiped with a silk cloth that has not been soaked in cleaning agent), but it should not be put on hold for a long time, otherwise it will rust and be polluted by dust. 8. New parts also need to be cleaned before assembly. 9. Lubricate with grease. Grease should be compatible with ball valve metal materials, rubber parts, plastic parts and working medium. When the working medium is gas, for example, special 221 grease can be used. Apply a thin layer of grease on the surface of the seal installation groove, apply a thin layer of grease on the rubber seal, and apply a thin layer of grease on the sealing surface and friction surface of the valve stem. 10. Metal chips, fibers, grease (except those specified for use), dust, other impurities, foreign objects, etc. should not be allowed to contaminate, adhere or stay on the surface of the parts or enter the cavity during assembly.
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