centrifugal pump’s
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When a centrifugal pump is installed at a negative liquid level, is the water forced in by the liquid level or drawn in by the pump? Is there a negative pressure area as well? Is there still an issue with momentum? What impact does the liquid level have on the pump?
Water enters the pump in both by being forced in and by being drawn in; it depends on the pressure generated by the liquid level and the negative pressure at the inlet during pump operation. Whether there is a negative pressure area depends on the liquid level height. Cavitation generally does not occur as long as the temperature is low.