The centrifugal pump is a hydraulic turbomachine capable of processing the fluid by the work done due to centrifugal effect through fixed and rotating channels always open, without modifying the compressibility of the fluid itself. Hence the name centrifugal pump. The mechanical movement imparted by the motor to the impeller provides kinetic energy to the flow (acceleration in the radial direction) which is transformed into pressure energy in the subsequent diverging channels. The main components of a vertical centrifugal pump are: