Swivel joint with hydraulic position signal

A swivel joint, comprising:

• a pivot provided with a longitudinal axis, the pivot comprising:
• an inlet conduit comprising an inlet configured to be placed in communication with a source of pressurized fluid;
• a signal conduit comprising an inlet configured to be placed in communication with the inlet conduit;
• a discharge conduit comprising an inlet configured to be placed in communication with the signal conduit and an outlet configured to be placed in communication with a low-pressure environment;
• a seating concentric to the pivot and in which the pivot is sealedly rotatable;
• and
• a connecting device, structured so as to assume a first configuration, in which it closes the inlet conduit and places the signal conduit in communication with the discharge conduit, and a second configuration, in which it places the inlet conduit in communication with the signal conduit and closes the discharge conduit wherein the connecting device is further structured so as to move between the first configuration and the second configuration following rotation of the pivot with respect to the seating for the pivot over a predetermined angle starting from an initial position.