Description: actual volumetric efficiency of the pump; Name: volumetricefficiency
Description: determined ratio of the actual delivered volume at maximum pressure to the geometric displacement volume; Name: Volumetric 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