Disassembly inspection: the valve shall be disassembled and repaired on time. When disassembling and repairing, the parts shall be cleaned again, dirt and rust shall be removed, the sealing gasket and filler with serious damage or destruction shall be removed, and the protruding surface shall be adjusted. After maintenance, the valve shall be subject to pressure test again, and the valve can be used again after reaching the standard. 　　

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