Standardized single impeller centrifugal pump on basement designed for pressurization, water circulation in conditioning and heating in commercial building service and for irrigation also in agriculture. The pump is engineered to allow disassembly of the bearings, impeller and seal without removing the pump body (back pull out design). Available with two-pole motor, four-pole motor and six-pole motor. Axial suction, radial delivery connector. The impeller is in cast iron or in stainless steel, depending on the model; the impeller is hydraulically balanced with the possibility of wear rings. Pump with standard flexible coupling or spacer.