Abstract: A centrifugal pump is of the type having a diffuser (1) with upstream and downstream ends (1a, 1b), a delivery body (3) fixed to the downstream end and including a delivery chamber, a suction body (2) fixed to an upstream ends (1a) of said diffuser (1) and including a suction chamber. A jacket (8) is fixed between the suction body and said delivery body, defining a space within. The pump includes a multi-functional chamber communicating with said jacket, a first auxiliary outlet communicating between said multi-functional chamber communicating and said suction chamber, a second auxiliary outlet communicating between said multi-functional chamber communicating and the external space, and outlet plugs for opening and closing the two outlets independently of one another. The pump is suitable for different pumping functions.