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When working with a pressure/suction pump in a closed loop system, can the flow rate of the discharge pressure be added to the flow rate of suction to calculate the total flow rate?

April 26, 2017closed Discharge flow loop pressure pump rate suction system working

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When working with a pressure/suction pump in a closed loop system, can the flow rate of the discharge pressure be added to the flow rate of suction to calculate the total flow rate?

1 Answer

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No. The discharge pressure, not the suction pressure, determines the flow rate. The true benefit of using a pressure/suction pump in a closed system as compared to using a pressure pump is that the flow rate is not reduced as the tubing diameter “narrows.