The vortex impeller is an «open» impeller whereby power transfer to the fluid being transported is comparable to the principle of a hydraulic coupling. It is fundamentally different from classic non-clog impellers. Egger, known as the pioneer in vortex impeller development, has been rigorously optimising their special hydraulic properties to the present day. Various impeller variations have resulted from this, offering optimal conditions for each application.

Insensitivity to abrasion – gentle transport

As a result of the Turo^® System, the major proportion (85%) of the fluid being pumped is transported directly from the primary vortex to the pressure connection. Only 15% of the fluid being pumped comes in contact with the impeller through the secondary vortex (in comparison with closed impellers where it is always 100%). That reduces the abrasive attack to a minimum and sensitive structures in the material to be conveyed such as crystals or bacterial flakes/algae remain largely unaffected. Any potential wear on the impeller always develops symmetrically; that is, the balance and thus the quiet operation of the pump remain assured. The output will only drop significantly with an almost completely abraded impeller.

Higher, longer-lasting efficiency through optimal flow geometries

One component of the Turo^® System is the patented axial volute in the casing. In other words, Egger specially applies coordinated casing geometries to the vortex impeller. This optimal interaction between impeller and casing confers to Egger Turo^®-Pumps the high discharge heads and efficiency uniquely achievable by vortex impeller pumps. Because of their insensitivity to wear, efficiency levels are sustained, even over long periods of time.

Great freedom from clogging by particles and fibres – open spherical channel

This feature is achieved by the completely recessed impeller. Solid objects up to the diameter of the pressure port and long fibrous materials do not cause any malfunctions. There are no channels that the solids have to pass through nor are there any radial gaps between the pressure and suctions sides that could be clogged by fibres and otherwise obstruct the pump.

New development: Turo^® TA impeller

Special impeller for pumping raw sewage in municipalities with high levels of textiles that tend to wrap around the blades. Fully integrated into our Turo^® vortex pump’s modular system, the impeller is hydraulically optimised for this requirement.

Quiet operation from the minimum to the maximum output

Turo^® vortex impellers transfer only minimal, near-constant radial forces to the shaft, regardless of whether the pump is used for minimal, optimal or maximal production volumes – a further advantage compared to closed impeller shapes. Together with the highly balanced nature of the impeller, this guarantees quiet operation of the pump.

Additional information on Turo^® Vortex Pumps