Actually KSB is launching the latest generation of its Etanorm series, which has been produced non-stop since 1936. The type series of the new generation comprises 43 pump sizes, which can be driven by either 2-pole or 4-pole motors. The selection chart has been extended by additional pump sizes, so that sizes can be selected even closer to the best efficiency point. The Eta type series is the global best-seller among standardised water pumps. Since 1936 more than 1.5 million Eta pumps have been produced worldwide.