Fluctuations in the flow rate of reciprocating pump
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I have a 3-ton/hour plunger reciprocating pump. After being shut down for a month, it experienced insufficient flow rate when restarted. The flow rate dropped after the pumps were in operation for 2-3 days; the pumps were taken apart and no issues were found with the inlet pipes. I seek an explanation
It may be that the internal components of the reciprocating pump (such as seals, valves, etc.) lose their original elasticity or get damaged after a long period of shutdown, resulting in poor sealing performance during operation and thus affecting the flow rate. It is recommended to check and replace these components that may have aged or become damaged. Additionally, it is also possible to check whether the pump’s suction pressure is normal and whether the outlet resistance has increased. .
Check the inlet and outlet check valves, that is, the inlet and outlet valves, for signs of wear; it is advisable to replace them. Pay attention to the sealing during installation; there must be no air leaks.
The outlet check valve is the most likely candidate; check the condition of the inlet and outlet check valves