Description: highest efficiency possible for the pump; Name: highest pump efficiency
Description: Greatest value of pump efficiency obtained at given operating conditions ; Name: Pump best efficiency
Description: The norm in fixed relation to the feature being described. This defines the parameters that influence the contents of the correlated feature. Type and number of the norm with issue year and issue month must be given, e.g. DIN ISO 4711:YYYY-MM.; Name: Reference norm material, pumping medium