Magdrive and mechanical seal industrial pumps
Horizontal and vertical centrifugal pumps

CDR launch regenerative turbine pump
The ideal machines with low NPSH requirements, that can safely handle vapour content up to 20%.

In 2007 CDR Pompe have added a magnetic drive regenerative turbine pump to their already comprehensive range of chemical industrial pumps. The regenerative pump is often classified in the general category of centrifugal pumps, and borrow some of their operating principles, however, offer themselves to some specific duties.

In a centrifugal pump, the liquid enters the impeller, which normally carries between 4 and 8 vanes, and is pushed out by centrifugal force, out of the pump discharge port having increased its pressure. In a regenerative turbine pump, the fluid enters the impeller much closer to its periphery where the first set of between 50 and 120 very small vanes gives the fluid a small push of centrifugal force, in the radial direction toward the Impeller periphery in a circular path back toward the inside diameter of the impeller vanes. Here it receives a second centrifugal push that increases the fluid velocity. This regeneration effect within the impeller therefore gives the pump its name of regenerative turbine pump.



Both sides of the Impeller carry the blades, making it hydraulically balanced, and while free floating within the casing, results in minimal contact with the stationery casing and produces minimal axial thrust, eliminating premature wear of the impeller and minimal loads on the magnetic drive bearing arrangement. The single Impeller is capable of producing six or more times that of a conventional centrifugal pump of similar size and speed, making them an ideal choice where high pressure and low flow characteristics are required.

They are also ideally suited to installations with low NPSH requirements, and can safely handle vapour content up to 20%.

The pumps are available in Stainless Steel, Polypropylene and PVDF to cover a wide variety of chemical applications. The magnetic coupling and bearing arrangement are taken from the already well proven series of pumps, making spare parts interchangeability a huge bonus for the range, while the magnetic coupling is manufactured according to a patented system that avoids the use of resins and glue. This provides a safe system with improved performance at high temperatures. Both plastic and stainless steel turbine pumps comply with Atex 100a regulations, Group II Category 2G, for use in potentially explosive atmospheres.