Description: relationship between the efficiency of the pump and the rate of flow at given operating/rated conditions of speed and liquid; Name: efficiency curve of the pump
Description: relationship between the total head of the pump and the rate of flow at given operating conditions /rated conditions of speed and liquid; Name: Pump efficiency curve
Description: proportion of gaseous substance in the liquid to be pumped, either as a contaminant or as vapour from the main body of liquid; Name: gas content