submersible sewage pump

High-efficiency, circumvolution-resistant, Non-clog, auto-coupling, hi-reliability and auto-control Pump adopts cooling jacket for powerbigger than 18.5kW, keep the pump operating safely under the lowest water level QW series used in municipal engineering, industry, hospital, hotel for pumping sludge, sewage and city life sewage Rated voltage: 380V (660V) Frequency: 50Hz, three-phase AC Volume ratio of solid in medium below 2% Heat protector in stator assure operating life of the motor A floating switch is installed at the bottom of motor chamber that can protect the mechanical seal in the motor side Oil-water probe is installed at the up end of the oil chamber between pump and motor that can protect the mechanical seal in the side Adopt perfect mechanical seal, the sealing material adopt tungsten carbide, silicon carbide and hard metal alloy Auxiliary impeller can balance the pressure outside of the mechanical seal, prevent the water entering into the oil chamber Unique impeller design, wide passage allow large solid and long fibre passing through freely Changeable wearing ring is installed between the impeller and the volute to keep the optimum operation conditions