The new 6 intubated hydraulic pump is called 140 PRS and it has been designed to offer the best hydraulic efficiency and to limit specific electrical consumption. The 6 140 PRS hydraulic pump combines the best features of a radial pump and those of a semi-axial pump. The diffuser, thanks to the blading system extended up to the impeller outlet, allows the water to follow a mandatory trajectory with a consequent increase in performance and hydraulic efficiency. The stage consists of: impeller, diffuser, bearing bush and steel spacer and it is driven by an hexagonal pump shaft. The available flow rates are: 15 m³ / h, 18 m³ / h, 24 m³ / h, 30 m³ / h. 6 intubated hydraulic pumps have top hydraulic efficiency, with values up to 75%.