(1) It is necessary to first check that the pressure in the upstream and downstream pipelines of the ball valve has been relieved before disassembly and disassembly can be carried out.
(2) Non-metallic 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, step by step, and evenly during assembly.
(4) The cleaning agent should be compatible with the rubber parts, plastic parts, metal parts, and working media (such as gas) in the ball valve. When the working medium is gas, gasoline (GB484-89) can be used to clean metal parts. Non-metallic parts can be cleaned with pure water or alcohol.
(5) Each ball valve part that has been disassembled can be cleaned by immersion. Metal parts with non-metallic parts that have not been disassembled can be scrubbed with a clean, fine silk cloth soaked in a cleaning agent (to prevent fibers from falling off and adhering to the parts). When cleaning, all grease, dirt, glue accumulation, 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 to remove the O-ring.
(7) After cleaning, wait until the cleaning agent on the washed wall evaporates (you can use a silk cloth that is not soaked in cleaning agent) before assembling, but do not leave it for a long time, otherwise it will rust and be contaminated by dust.
(8) New parts must also be cleaned before assembly.
(9) Use grease for lubrication. The grease should be compatible with the metal material, rubber parts, plastic parts, and working medium of the ball valve. When the working medium is gas, you can use grease such as Special 221. Apply a thin layer of grease on the surface of the seal installation groove, a thin layer of grease on the rubber seal, and a thin layer of grease on the sealing surface and friction surface of the valve stem.
(10) During assembly, metal debris, fiber, grease (except for specified use), dust and other impurities, foreign matter, etc. should not be allowed to contaminate, adhere or remain on the surface of the parts or enter the inner cavity.