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The centrifugal pump type D and the electric pump unit based on it are designed for pumping water and liquids that have properties similar to water in viscosity and chemical activity, with a temperature of up to 85 ° C, with a solid inclusion content not exceeding 0.05% by weight with a maximum size of 0.2 mm, and a microhardness of no more than 6.5 MPa (650 kgf/mm2).