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|1. (WO2018166979) CENTRIFUGAL PUMP UNIT|
|Applicants:||GRUNDFOS HOLDING A/S
|Title:||CENTRIFUGAL PUMP UNIT|
The invention relates to a centrifugal pump unit, comprising an electrical drive motor, at least one impeller wheel (14) driven thereby, and a pump housing (12), which surrounds the impeller wheel (14) and in which at least one valve element (18, 18i) is arranged, which valve element can be rotated between two switching positions, the valve element being rotatably retained on at least one bearing in the interior of the pump housing (12), the bearing being arranged in a bearing space (140), which is separated by at least one seal (142) from the remaining interior of the pump housing (12), which remaining interior holds a fluid to be conveyed.