NIKKISO – NON-SEAL Pumps (Canned Motor Pumps)
Nikkiso’s non-seal pumps have no shaft seals; the canned motor and pump are integrated into one housing. The stator has a two-layer structure, consisting of the stator liner, stator band, and extremely tight terminal plate, allowing for a higher degree of safety. With the pressure raised by the impeller, the liquid is sent to the discharge side. Some of the liquid is also sent to the motor to lubricate bearings and cool the motor, then it is returned to the suction side through the vents on the shaft (regular model).