WQ Series WQ series submersible sewage pump is mainly comprised of three parts: pump, mechanical seals and motor. Pump is at the lower part of sewage pump, and the structure is impeller and shell. Motor located at the upper part of the motor pump, which is the single phase or three-phase electric motor. Mechanical seals are between pump and motor and it is a kind of double end mechanical seals, "o" rings are applied in all static joints of the submersible pump. TYPE£ºSUBMERSIBLE DRAINAGE PUMP