Seal-less pump design

The Hydra-Cell pump drive mechanism is submerged in a reservoir of oil, which keeps it permanently lubricated and allows power to be transmitted through the drive train with minimal frictional losses. With no dynamic seals in the pumped liquid to further consume energy, pumping efficiencies as high as 85% minimise Hydra-Cell’s power requirements. 

Wanner says this compares with about 45-50% pumping efficiency for a typical multi-stage centrifugal pump which, it says, means Hydra-Cell pumps frequently can be fitted with smaller motors.

Hydra-Cell pumps have no internal process fluid ‘leak paths’ and exhibit no efficiency ‘drop-off’ as pressures increase and/or viscosities fall. 

Wanner has also turned its attention to improving pumping system efficiency with the introduction of Intelligent Pump Control technology, whereby changing system flow and pressure requirements can be met precisely and automatically, without resorting to energy wasting, bypass systems.