Description: The ratio the theoretical required power to the shaft power; Name: overall efficiency
Description: determined proportion of the driver power input, pmot, delivered as pump power output, pu; Name: overall efficiency
Description: net positive suction head (NPSH) from flow rate at best efficiency point for actual impeller (indication of the minimum inlet pressure in meters required for the pump to deliver according to the QH curve. related to the optimum duty point at the current impeller diameter); Name: net positive suction head for Q opt at actual impeller size