Export of centrifugal pump on startup, pump haven't water in the pipeline, so did not exist pipeline resistance and imp

[wyb2020]

Do you want to close the outlet valve when the centrifugal pump starts?is no resistance to vibration, and it will run in large flow. There are often pump vibration, noise, and even overload operation of the motor, which will burn out the motor. Close the outlet valve, equivalent to artificially set pipe resistance pressure, with the normal operation of the pump, gradually start the valve, so that the pump along its performance curve law gradually normal work.
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