How to Clean an Electric Ball Valve

        When reassembling the body of an electric ball valve, bolts must be tightened symmetrically, progressively, and uniformly. The ball valve can only be disassembled and dismantled after the pressure upstream and downstream of the valve has been relieved. New parts must also be thoroughly cleaned before assembly. During assembly, metal chips, fibers, grease (except where specifically permitted), dust, and other impurities or foreign objects must not contaminate, adhere to, or remain on the surfaces of the parts or enter their internal cavities. After cleaning, the cleaned surfaces should be allowed to air-dry (they may be wiped with a silk cloth that has not been soaked in the cleaning agent) before assembly; however, they must not be left standing for an extended period, as they will otherwise rust or become contaminated by dust.

       After cleaning, non-metallic parts of an electric ceramic ball valve should be removed from the cleaning agent immediately and must not be soaked for an extended period. Individual parts that have been disassembled may be cleaned by immersion. Metal parts that still retain non-metallic components that have not yet been disassembled may be scrubbed with a clean, fine, lint-free silk cloth impregnated with a cleaning agent (to prevent fiber shedding from adhering to the parts).

       During cleaning, all grease, dirt, accumulated residue, dust, and other contaminants adhering to the surfaces must be removed. During the disassembly and reassembly of the ball valve, the sealing components must be protected; in particular, non-metallic components such as O-rings should preferably be handled using specialized tools. The cleaning agent must be compatible with the rubber, plastic, and metal parts of the electric ball valve, as well as the working medium (e.g., gas). When the working medium is gas, gasoline (GB484-89) may be used to clean metal parts; non-metallic parts should be cleaned with purified water or alcohol.