Description: ratio of the actual delivered volume at max. pressure to the geometric displacement volume; Name: vol. efficency
Description: ratio of the actual delivered volume at maximum pressure to the geometric displacement volume; Name: volumetric efficiency
Description: NPSH-value required for a drop of 3 % in the total head of the first stage of the pump as a standard basis for use in performance curves; Name: Net positive suction head required for a drop of 3 %