A pump assembly is disclosed having a housing including a suction inlet and a discharge outlet and a pump assembly contained within the housing. The pump assembly includes a pumping stage and a driving stage,Magnetic pumps with the pumping stage including an impeller assembly constructed and arranged to impart regenerative action flow to the fluid being pumped. The driving stage includes a magnetic drive comprised of a drive magnet and a driven magnet associated with a shaft operatively coupled to the impeller assembly, with the driven magnet positioned with in a sealed containment vessel.Suber-water pumps A portion of the pumped liquid is circulated as a coolant through the containment vessel and returned to the pumping stage. A control assembly is provided to monitor the differential temperature of the magnetic drive and the bearing structure within the magnetic drive to control operation of the pump assembly.

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2011-11-30

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