The paper considers pump operation as hydraulic turbine with purpose to produce mechanical power from liquid flow. The Francis hydraulic turbine was selected for comparison with centrifugal pump in reverse operation. Turbine and centrifugal pump velocity triangles were considered with purpose to evaluate PaT efficiency. Shape of impeller blades for turbine and pumps was analysed. Specific speed calculation is carried out with purpose to obtain similarity in pump and turbine description. For lower head of liquid flow (10 meters and less) was considered axial pump comparison with Kaplan turbine. The practical application of KSB AG pumps as turbine was used to demonstrate operation range of various pumps type.