Valve stem leaking
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How can this be blocked without downtime? Sorry to bother everyone
Get spare valves, gaskets, and bolts first, and replace them immediately if you have a chance to stop the car. It's hard to deal with this look. The rust is serious, and if not done properly, the leakage will increase or the valve parts will be damaged. For reference.
You can adjust the packing gland nut appropriately to reduce leakage!
You can only tighten the screws of the packing gland. If it still leaks after tightening, you have no choice but to replace it. It looks like water is leaking from the valve if it is blind on the pipe. It is normal for the packing to expand and contract over time, and the leakage will not increase. Basically, this is it. If it is a steam valve, it will basically stop leaking as soon as the valve is heated.
Don’t stop the machine, just make a box and wrap it up