Submersible centrifugal pumping units ECPK, manufactured according to TU 3631-024-00162984-2014, are intended for injection into injection wells of industrial wastewater with a density of no more than 1400 kg / m3, with a temperature of up to 333K (60 ° C), hydrogen index ( pH) from 5.4 to 9, total mineralization - no more than 250 g / l, with the content of mechanical impurities up to 0.1 g / l. Climatic modification - U * and HL *. Pumps are used in the oil industry to maintain reservoir pressure in oil fields. Design: High technical and economic indicators and increased reliability of operation of units produced by the Molot-Mechanika Plant in comparison with similar units from other manufacturers is provided primarily due to design features: special bronze or stainless steel, and the fasteners are made of corrosion-resistant steel, which ensures durability of work in an aggressive environment. If necessary (as agreed with the customer), it is possible to select special grades of bronze, steel, rubber for the unit to operate in special conditions. -the unit uses graphite-fluoroplastic or rubber-metal radial bearings, depending on the properties of the pumped medium; - self-aligning segment thrust bearings (thrust bearings) made of graphite-fluoroplastic are used in the engine and in the pumping part, which increases the reliability of the unit; - the units use sealed water-filled electric motors. The mechanical seal installed on the rotor shaft eliminates the contact of an aggressive environment with the stator-rotor package and the winding, which significantly increases the service life of the electric motor; - engines for units operating in difficult conditions are designed with an additional power reserve in accordance with high mine requirements; -copper-filled rotor is made of type-setting of electrical steel, which ensures a decrease in magnetic losses, an improvement in starting characteristics and an increase in the efficiency of the engine; - a winding wire with reinforced insulation is used, which increases the reliability of the engine; - improved engine cooling circuit. In engines with a power of 250 kW and above, a forced circulation system is used. - when installing the unit in a well and a large-diameter well, a cooling jacket is provided to ensure a normal cooling mode of the engine. UETsPK standard size Q, m3 / day Q, m3 / h H, m N, kW (at 1000 kg / m3) N, kW (at 1200 kg / m3) Pump weight, kg D, mm L pump, mm U, V Weight unit, kg Unit length, mm 16-2000-160 2000 83.3 160 90 110 275 375 980 380 or 1150 or 2200 or 3000 or 6000 727 2440 16-2000-200 2000 83.3 200 90 110 310 375 1020 762 2480 16-2000-450 2000 83.3 450 190 220 900 375 1930 1993 4731 16-2000-900 2000 83.3 900 375 500 1734 375 3365 3490 6799 16-2000-1400 2000 83.3 1360 442 700 2584 375 4909 4404 8489 16-3000-160 3000 125 160 90 115 210 375 895 662 2355 16-3000-200 3000 125 200 110 132 265 375 1095 741 2615 16-3000-250 3000 125 250 150 180 320 375 1145 852 2805 16-3000- 500 3000 125 500 280 500 785 375 1905 2541 5339 16-3000-1000 3000 125 930 435 700 1526 375 3055