What are the precautions for using ball valves?

(1) It must be confirmed that the upstream and downstream pipelines of the ball valve have been relieved of pressure before disassembly and decomposition can be carried out.
(2) Non-metallic parts should be taken out of 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) Every single ball valve part decomposed can be cleaned by dipping. Metal parts with non-metallic parts that have not been decomposed can be scrubbed with a clean, fine silk cloth soaked in cleaning agent (to prevent fibers from falling off and sticking to the parts). When cleaning, all grease, dirt, glue, dust, etc. adhering to the wall surface must be removed.
(6) When the ball valve is disassembled and reassembled, care must be taken to prevent damage to the sealing surface of the parts, especially non-metallic parts. Special tools should be used when removing the O-ring.
(7) After cleaning, it should be assembled after the cleaning agent on the wall surface to be washed has evaporated (it can be wiped with a silk cloth not soaked in cleaning agent), but it should not be left 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, grease such as special 221 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 scraps, fibers, grease (except for specified use), dust and other impurities, foreign matter, etc. shall not be allowed to contaminate, adhere or stay on the surface of the parts or enter the inner cavity during assembly.