This document stipulates the selection of packing, types of packing, packing filling, packing quality requirements, and treatment of leakage of sealing packing in the inspection and maintenance of various control valves. This document applies to the regulations on sealing packing during the inspection and maintenance of electric, pneumatic and other types of control valves used in oil field mining, pipeline transportation, petrochemical industry, coal chemical industry and other fields.
T/NXJX 052-2023 history
2023T/NXJX 052-2023 Inspection and maintenance technical specification for control valve packing