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Screw pump Rosa 4QJDa-0.55 is designed for water supply in domestic conditions from boreholes and wells with an internal diameter of 110 mm or more, and can also be used for supplying water from shaft wells, reservoirs, and open water bodies for watering gardens and vegetable plots. The screw design of the pump mechanism allows its use in more contaminated water than centrifugal pumps. The pump design allows its use in water with mechanical impurities up to 14 kg per ton of water, which is one of the highest indicators among pumps of this design. Due to this, the pump is recommended for supplying water from contaminated wells and boreholes, or for pumping them out. Maximum head - 80 meters; Maximum flow rate - 1.6 m3/hour; Rated power consumption - 0.55 kW; Pump diameter - 4"