Unconventional methods for pump cutting
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In work, it’s inevitable to encounter problems with hot oil pumps, which then require them to be removed for repair. To remove the hot oil pump, it is necessary to close the inlet and outlet valves. However, the material flowing through the hot oil pump is not always very clean, which can result in the inlet and outlet valves not sealing properly and thus prevent the hot oil pump from being removed. Do you have any effective solutions for this situation? Share it.
To spark discussion, let me start by mentioning one method. When closing the inlet and outlet valves again, strike the valve with a hammer while closing it.
However, sometimes it’s of no use at all. Valves should be properly maintained on a regular basis. If it can’t be shut off, it’s most likely the pump outlet valve. The inlet valves are always fully open, while the outlet valves are rarely fully open. Over time, the medium will erode and corrode the valve discs, resulting in the valves not closing properly.
Well, worn-out valve shutters are one issue; the hot oil pumped contains mechanical impurities, which inevitably make it difficult to close the valve shutters properly when shutting the valve.
Mm. If the valves used for import and export are gate valves, you can try using a larger F wrench; it may yield unexpected results.
If there’s no large one available, then use an extended sleeve~~~~~ The quality of the valve itself isn’t very good; it tends to develop problems easily. Once, during a material cutting operation, we had to use a large wrench with a length of almost 1.5 meters to close the valve, and it took an hour to do so – it was really frustrating~~~~ Thankfully, we were able to get rid of that valve~~~
There’s a backup plan if cutting isn’t possible~~~ It’s just a bit more troublesome~~~
Closing it in such a forceful manner might work well the first or second time, but after repeated attempts, the valve is very likely to leak internally and will no longer be able to stay closed
It would be frustrating if there’s still internal leakage even after it’s turned off for over an hour. :lol
The less frequently used valves are more likely to fail to close properly. All cases where it couldn’t be properly closed are recorded, and they are replaced during major repairs.