Description: Power requirement of the pump at the flow rate at the point of best efficiency; Name: pump power input (optimum)
Description: pump power input at the rate of flow corresponding to the best efficiency; Name: optimum pump power input
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