Single-stage horizontal centrifugal pumps with double-sided semi-volute supply of liquid to the impeller and with volute discharge (type Д). Intended for pumping of water and liquids with similar properties in terms of reactivity, with temperature up to 85 °С, and viscosity up to 36 cSt. The maximum allowed mass content of solid particles is below plus 0.05 %, the grain size is under 0.2 mm.