The series ‘EO’ Sump Pump features cantilevered, sleeved, stainless steel shaft with vapour seal between the rotating shaft and the support column to further protect the motor. The cantilevered shaft eliminates bearings and conventional pump seals resulting in a pump that can run dry without damage. A compound impeller prevents liquid from rising in the column, even at maximum TDH, while the fully – enclosed bottom impeller provides high hydraulic efficiency at low horsepower.