What happens if the outlet valve of a centrifugal pump closes suddenly during operation?

2018-09-04View Original

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What happens if the outlet valve of a centrifugal pump closes suddenly during operation?

Reply #22018-09-04

1. Sudden increase in pump outlet pressure； 2. The pump body temperature rises.

Reply #32018-09-04

This is because the power required by a centrifugal pump increases as the flow rate increases; when the flow rate is zero, the shaft power is at its minimum. When starting the pump, the outlet valve is closed, resulting in a flow rate of zero, which means that the starting load on the pump is minimal. This prevents the motor from being damaged due to an excessive starting load that exceeds its rated current.

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