Axial flow pump (RPP / RPG)
Axial flow pumps are centrifugal pumps, in which the fluid is transported in a direction parallel to the pump shaft, in other words axially. In contrast to radial flow pumps, the transport stream is not redirected in axial flow machines. Axial flow pumps are mainly implemented as tubular casing pumps. A propeller-like rotor similar to the propeller on a ship sets the fluid in motion. Elbow propeller pumps are especially well suited for gentle transport at large flow rates with small discharge heads.
Stuffing box packing with easy-access seals – packing cords are quickly replaced
Stuffing box packings of the shaft seal are often still in use on elbow pumps even today. Compared to mechanical seals, higher operating costs may be required; however, they offer greater reliability against possible leakage problems and are more robust in the face of malfunctions in the system. Because packing cords have to be replaced regularly, the time consumed can be reduced to a minimum with the optional standstill seal – replacement can be carried out while the pump is standing still but without emptying the pipeline. An advantage that many of our customers treasure.
Cantilever shaft and no bearing touching the fluid
Egger's elbow propeller pumps have a cantilever shaft. Therefore, no sleeve or roller bearing is contacting the fluid – a prerequisite for applications in abrasive fluids. With corrosive fluids, the shaft must also in addition be completely protected with a protective sleeve. It will also be dry-installed into a solid bearing block equipped with roller bearings.