The system consists of a J self-priming centrifugal pump coupled to a Saxmag magnetic drive.
The external rotor is driven by an electric motor through antifriction bearings. It is due to the magnetic forces of the permanent magnets that the internal rotor is driven in synchronism with the motor speed. The rotating magnetic field induces in the containment shell eddy currents attributable to the conductivity of the latter. Hence, there is a heat build-up in the containment shell. In the hydraulic section, part of the pumped fluid is branched off through ports in the rear casing cover, to pass through the inside of the containment shell and return through a shaft bore, thereby dissipating heat.