What is the meaning of "ETA" in pump selection table, the unit is%; and what does "NPSH" mean? The unit is m. Is in the south water pump performance curve appeared, please refer to the master, and now thank you.
NPSH refers to the cavitation, the pump is the technical parameters
NPSH refers to the cavitation, the pump is the technical parameters
Water pump selection table "ETA" is the meaning of efficiency. NPSH refers to the pump's cavitation margin.ETA is abbreviated as "efficient ratio", and Chinese means "water efficiency". The efficiency of the pump here is generally referred to as the efficiency of the pump design point because the actual efficiency of the pump varies with the pump operating conditions. The efficiency of the ETA can also be interpreted as the efficiency of the pump at the rated lift (or rated flow).
