The valve packing is leaking severely
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Domestically produced valves in atmospheric and vacuum distillation units have severe leakage problems. The valve is a standard sleeve valve, with a high operating temperature of 260°C. I would like to ask for some advice. How to solve this problem.
The leakage is severe; is it an internal leak? The internal structure of sleeve valves is made of metallic materials, so 260 degrees should not be a problem. Unless the quality is not very good
Domestic products have too high a temperature, and the fillers and gaskets inside tend to deform easily. It gets leaked. Several solenoid valves in our factory are the same. It’s also possible that your medium is severely corroded
Could it be that you didn’t choose the right filler? There shouldn’t be any problems with graphite and the like! This temperature
At such high temperatures, graphite packing should be used. If there is severe leakage, it is necessary to replace the packing. If the packing doesn’t last long, could it be that the valve is experiencing surge, which causes faster wear of the packing? It is necessary to adjust the valve positioner to keep the valve stable.
I think that during the packing process, some small particles got trapped between the valve stem and the packing; when the valve stem moves, this creates friction that damages the packing and leads to leakage. This is my opinion