What to do if there is internal leakage in the vent valve?
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There is internal leakage in the valve at the pump outlet – what can be done to seal it? Welding the valve is an option, but there are no threads on the pipe end
Use a professional threading machine; first install a thread plug, then stop work to replace it with a dual-valve device
If there are threads, a plug is processed; if there are no threads, an additional valve is added~~~~~
Isn’t the pump outlet vent valve located in front of the pump outlet valve? Switch the pump to operation; after displacement treatment and installation of blind flanges, welding can be carried out to replace the valve.
Switch the pump, drain any remaining liquid, remove the short pipe at the pump outlet, flush it, and then take it to a designated area where welding is allowed in order to replace it with a flanged valve (no welding permit is required). Finally, install a blind flange cover behind the valve to prevent difficulties in dealing with similar issues in the future.
Our unit’s experience is to add another valve at the outlet of this valve, but it’s important to ensure the quality of that additional valve; otherwise, leaks will cause problems