Abstract: A centrifugal pump for conveying a fluid includes a housing having an inlet and an outlet for the fluid. An impeller is arranged in the housing for rotation in an axial direction to convey the fluid from the inlet to the outlet, a shaft extends in the axial direction for driving the impeller, and a stationary guide device for guiding the fluid from the impeller to the outlet is connected to the housing. A resilient compensating element is disposed between the housing and the guide device, is arranged around the shaft, and holds the guide device in a centered position to the impeller during a radial relative movement to the housing.

Abstract: A pump casing for a centrifugal pump has a first housing part, a second housing part sealingly attached to the first housing part, a plurality of securing elements for linking the first and the second housing part, and a radial sealing element for sealing between the first and the second housing parts, the first housing part has a first axial end surface, and the second housing part has a second axial end surface, the first and second axial end surfaces facing each other, and the first axial end surface includes an annular protrusion extending in the axial direction and the second axial end surface includes an annular recess configured for engaging with the annular protrusion, the annular protrusion arranged radially inwardly with respect to the securing elements.

Abstract: A pump casing for a centrifugal pump has a first housing part, a second housing part sealingly attached to the first housing part, a plurality of securing elements for linking the first and the second housing part, and a radial sealing element for sealing between the first and the second housing parts, the first housing part has a first axial end surface, and the second housing part has a second axial end surface, the first and second axial end surfaces facing each other, and the first axial end surface includes an annular protrusion extending in the axial direction and the second axial end surface includes an annular recess configured for engaging with the annular protrusion, the annular protrusion arranged radially inwardly with respect to the securing elements.

Abstract: A centrifugal pump for conveying a fluid includes a housing having an inlet and an outlet for the fluid. An impeller is arranged in the housing for rotation in an axial direction to convey the fluid from the inlet to the outlet, a shaft extends in the axial direction for driving the impeller, and a stationary guide device for guiding the fluid from the impeller to the outlet is connected to the housing. A resilient compensating element is disposed between the housing and the guide device, is arranged around the shaft, and holds the guide device in a centered position to the impeller during a radial relative movement to the housing.