According to one aspect of the invention, a reversible centrifugal pump comprises a rotor drivable in rotation in both directions about an axis by a motor, the rotor being mounted in a casing having a

Known centrifugal pumps comprise a rotor having impeller blades which is driven in rotation within a casing having an axial inlet for fluid and a peripheral outlet through which the fluid is discharge

Centrifugal pumps normally have to have some form of rotary seal at the point where the rotating shaft carrying an impeller passes out through a stationary casing.

A centrifugal pump, which sucks the liquid into its center and throws it outwards in the direction of the periphery, has no problems when pumping clean liquids. However, when the liquid contains solid

A centrifugal pump for pumping heavily polluted liquids. The impeller is provided with an inlet having cutting means cooperating with an inlet opening of the pump housing, which cutting means cut elon

A centrifugal pump for pumping heavily polluted liquids. The impeller is provided with an inlet having cutting means cooperating with an inlet opening of the pump housing, which cutting means cut elon

In accordance with the invention a centrifugal pump is provided with an improved pump construction including adaptability of pump casing to pump impeller, and variability therein to desired operating

A centrifugal pump including a stationary guide vane secured to a casing, and a centrifugal impeller arranged for rotation in the casing in a position adjacent the stationary guide vane.