As Total Dynamic Head (TDH) decreases, what happens to gallons per minute (GPM)?

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Multiple Choice

As Total Dynamic Head (TDH) decreases, what happens to gallons per minute (GPM)?

Explanation:
Lower system dynamic head means less pressure and friction the pump has to overcome. A pump delivers more water when the head it must overcome is smaller, so the operating point on the pump’s curve shifts to a higher flow. In practical terms, as TDH decreases, GPM increases, approaching the pump’s maximum capacity as head gets very small.

Lower system dynamic head means less pressure and friction the pump has to overcome. A pump delivers more water when the head it must overcome is smaller, so the operating point on the pump’s curve shifts to a higher flow. In practical terms, as TDH decreases, GPM increases, approaching the pump’s maximum capacity as head gets very small.

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