Positive suction head of the pump
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The positive suction head of the pump is 3 m. Does it refer to the pump’s suction lift being 3m? ?
The net positive suction head of the pump is NPSHr; if this value is 3 meters, and water at normal temperature is being pumped under standard atmospheric pressure, then the pump’s suction lift will be 10 meters minus 3 meters, which equals 7 meters. However, pipeline losses and safety margins must also be taken into account, so the actual suction lift should not exceed 6.5 meters
Thank you, I almost chose 3 meters. This is data provided by legitimate research institutions, and it differs from what we usually say