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Question:

Centrifugal pumps for normal operation, is it reasonable to install valves on their inlet lines?

Centrifugal pumps for normal operation, is it reasonable to install valves on their inlet lines? Why?

Answer:

Submersible pump is best in the water, if dry pumping will cause burns.
Reasonable, no valve, how to debug, overhaulGenerally installed on imports of valves of relatively large Cv value
Unreasonable, easy to produce throttling loss, pressure loss, pressure reduction, easy to cause cavitation

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