Water Pressure Pump Sizing: What Size Do I Need?
to size a water pressure pump, add up the litres per minute of every tap that could run at once, then add the vertical lift and pipe friction between your tank and the furthest outlet. Most Australian homes need 40 to 70 L/min at 300 to 450 kPa. Two storey homes and properties with reticulation need 70 to 90 L/min at 450 to 550 kPa.