Description: delivery head of a pump that can deliver it at a minimum without suffering any damage; Name: minimum permitted head
Description: Minimum permissible head at which the pump can be operated without suffering damage; Name: Minimum allowable head
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 %