Abstract: Pneumatic transportation system (1) for objects, particularly for fragile objects, comprising: a first transportation duct (2), having a first end portion (3) and a second opposite end portion (4), adapted to be passed through by a vector gas for transporting objects inside the duct (2); a venturi effect nozzle (5) comprising a nozzle body (25) having an inlet section (6) with an inlet duct (26) and an outlet section (7) with an outlet duct (27), the outlet duct (27) being connected to the first end portion (3) of the first transportation duct (2), the venturi effect nozzle (5) comprising a control gate (8) for supplying the venturi effect nozzle with a flow of supply gas having a supply pressure such as to influence the pressure of the flow of the vector gas to influence the characteristics of the motion of the objects to be transported inside the first transportation duct (2); a control system (10, 11, 12) operatively connected to the control gate (8) of the venturi effect nozzle (5) to control the suppl