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: ten times the logarithm to the base 10 of the ratio of the sound power of a source, p, to a reference value, p0, expressed in decibels; Name: sound output level