Staged centrifugal pumps from the IN-VB(-S) range are multistage, vertical centrifugal pumps in an IN-LINE design. The non-self-priming centrifugal pumps distinguish themselves through a high rate of efficiency as well as durability. Wetted parts are made from stainless steel AISI 304 or AISI 316 L. The ≥ 0.75 kW three-phase motors correspond to the energy efficiency classification IE3.