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Eight common faults of valves and their treatment methodsIssuing time:2019-07-12 00:00Link:http://www.suntti.com.cn Cause of valve body leakage: 1. There are sand holes or cracks in the valve body; 2. Pull-out Crack of Valve Body during Repair Welding Handle: 1. For polishing of suspected cracks, etching with 4% nitric acid solution can reveal cracks. 2. Digging and repairing the cracks. |