Abstract: A pump which is designed to be mounted within a recirculating water system where a portion of the recirculating water is diverted (bypass water) and cause to flow through the motor chamber with this recirculating water to absorb heat that is produced during the operation of the motor. The heated bypass water is then added back to the recirculating water. The pump includes an electric motor which is mounted within a pump motor chamber of a motor housing and is completely enclosed therein. The pump motor chamber is filled with oil thereby submerging of the electric motor in oil. A water conducting tube is mounted within the pump motor chamber and surrounds the electric motor. The tube inlets water from the pressure side of the pump impeller, conducts this bypass water entirely through the tube and then discharges the bypass water into the inlet of the recirculating water to the pump impeller.

Abstract: A pump which is designed to be mounted within a recirculating water system where a portion of the recirculating water is diverted and caused to flow through the pump with this recirculating water to absorb heat that is produced during the operation of the motor. The heated diverted water is then added back to the recirculating water system. The pump includes an electric motor which is mounted within a motor housing and is completely enclosed therein. An electrically insulative mounting arrangement mounts the motor relative to the motor housing preventing the conductance of electricity therebetween. The motor housing is filled with oil thereby submerging of the electric motor in oil. The motor housing is enclosed within a seal plate. Surrounding the motor housing is an annular chamber through which the liquid is caused to flow. A baffle arrangement is located within the annular chamber to direct the flow of the liquid so that all area across the surface of the pump housing has liquid flowing thereacross.