Pump suction lift

2011-01-13View Original

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Suction lift = Local atmospheric pressure – Required NPSH – Friction losses in the suction pipeline + 0.5 meters of safety margin. Is this formula correct? Does it still hold true in a vacuum environment?

Reply #22011-01-13

Suction lift = local atmospheric pressure – required NPSH – safety margin. Vacuum? What does that mean? Do you mean the vacuum inside the pump or the ambient vacuum? 1. Vacuum inside the pump, see formula 2. Ambient vacuum; not applicable

Reply #32011-01-13

Our oil circulation system is vacuum-based.

Reply #42011-01-13

Reply to 3# jackllian: If your pipeline is under vacuum, just insert a tube into the water to draw water in

Reply #52011-01-13

Calculate the Bernoulli equation and you’ll know

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Pump suction lift

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