Description: smallest total energy height at the outlet side of the pump aggregate to the total energy height of the admission side of the pump aggregate at operating point; Name: smallest allowable head
Description: Minimum permissible head at which the pump can be operated without suffering damage; Name: Minimum allowable head
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