How to deal with internal valve leakage
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Some valves in our unit are leaking internally; what is the most appropriate way to deal with this? Should we replace the gaskets?
What kind of valve is it? Different valves require different treatment methods.
The valve category and model must be specified; some require grinding； Some require replacement gaskets ； For some valves, as long as the leakage level meets the requirements, a slight amount of leakage is normal; for example, pneumatic control valves have a certain degree of leakage.
What kind of valve is it? Valve type? Model?
Please specify the type of valve. Generally, for drain valves and vent valves, it is possible to replace the seat gaskets and seals, or to clean the valve seat and stem. In the case of ball valves, sealant can be injected. Of course, in state-owned enterprises such as CNPC, if internal leakage occurs, the entire valve has to be replaced
It depends on the type of valve; minor issues can usually be resolved by proper installation, while more serious problems require grinding or similar treatments. Large defects need to be repaired through surfacing, and in the most extreme cases, the component must be replaced
Almost everyone upstairs gave very comprehensive answers