QDX and QX submersible electric pumps are single-phase or three-phase asynchronous motor. The pump is located on the lower part of the motor. It is a centrifugal impeller and volute structure. The dynamic seal between the water pump and the motor is adopted. Double end mechanical seal. The static seal at each fixed end is made of oil-resistant rubber “O” type seal ring, Due to its small size and light weight, this series of electric pumps are suitable for underground rural water pumping, farmland irrigation, garden irrigation, household domestic water use, and can also be used to exclude industrial water accumulation, water supply and drainage in building construction, and breeding industries.The difference between QDX pumps and WQD pumps is that QDX series is suitable for pumping water with little or without particles rather than water with much sand.