This series submersiblemotor pump consists of pump ,mechannical seals and motor .It has a single-phase asynchronous motor which is installed automatic temperature over-cunnent protection device ,it could cutoff power to protect the pump when voltage is too low or overload or plugging turn .The pump adopts closed impeller ,a kind of double end mechanical seals is between the punp and motor ,"o" oil resistant rubber seal rings used to all static joints of the submersible pump. Models and their main performance parameter ; Modelrated flowrated headrated powerrated voltageferequencereted speedpipe sizeQD3-35/2-0.753350.7522028605025QD6-35/3-1.16351.122028605050QD3-65/4-1.53651.522028605025Other models and sizes are available as you required