Water-Cooled Canned Motor Pumps

Water-cooled canned motor pumps are designed for high-temperature applications. They isolate liquid in the motor section of the unit from the hot process fluid in the pump casing by a series of pressure ports located in the front bearing housing or pump casing adapter. This isolated liquid (usually the same fluid as the pumped fluid) is circulated through a liquid-cooled heat exchanger by an auxiliary impeller located on the rotor assembly. This design allows the motor and bearing environment to be at a much lower temperature than the process fluid, enabling the use of standard bearings and motor insulation significantly reducing both first and long term operating and maintenance costs.


  • Standard motor insulation and bearings
  • Bearing environment at lower temperatures
  • Secondary containment
  • Bearing wear monitors available

> View Circulation Path for Standard Externally Cooled Motor

Recommended Pumps:
> Teikoku
> Chempump G Series