High-flow pump: the net positive suction head is too high, so the pump cannot be tested
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This post was last edited by 3983596_FPPZ on 2018-12-18 at 10:29. It deals with a double-suction pump with a flow rate of 1900. During the factory tests, the pump’s net positive suction head was 9 meters. It is of the open-type design, and the tank in which it operates is filled to capacity; the suction height is over 1 meter. Whenever the flow rate increases, cavitation vibration occurs. In contrast, the closed-type design does not have such large pipes and tanks. I am seeking advice from experienced users who are familiar with pump manufacturing – is there any solution?
Hehe, it’s solved – I found a deep pit: lol
For large-flow double-suction pumps like these, with a NPSH of 12 meters, is it necessary to reverse the tank orientation in all such cases?