Description: Design flow rate in the pump inlet port divided by the inlet cross-section of the pump; Name: average design speed in the inlet
Description: rated flow at pump inlet connection divided by the inlet area of the pump; Name: mean rated velocity at inlet
Description: amount of the absolute value of the total head above the head, equivalent to the vapour pressure of the liquid at the particular temperature, with reference to the NPSH datum plane; Name: net positive suction head