Cast iron submersible pumps with the vortex impeller for sewage, suitable for foul waste water with solid contents with the 30 mm as maximum diameter. Technopolymer upper cover with the handle. Nylon vortex impeller with the fiber glass abrasionproof resistance. Motor body, hydraulic section in cast iron EN GJL 200. Mechanical seal in carbon allumina. Dry type asynchronous sealed motor. Rotor mounted on ball bearings to ensure silent running and long life. In the single-phase version capacitor under the cover. Thermal and overcurrent protection responsability of the user.