Pumps are multistage submersible pumps designed for permanently immersed operation.
The motor is connected to the pump by means of a support designed in accordence with NEMA standards. The operating principle is that of multistage submersible pumps. The impeller, supported by the motor shaft, rotate inside vane diffuse which transfer. The liquid leaving each impeller towards the suction opening of the next; once the liquid has passed through the series of impellers it is expelled via the delivery opening each impeller and its respective vane diffuser constitutes a pumping stage, which according to the operating principle of centrifugal machines, generates a pressure increase in the fluid which is added to each subsequent pressure increase by the other stages in series.