Junction body, fittings, hydraulic system for the passage of a fluid between two hydraulic circuits, associated mounting process

Hydraulic pipe system comprising:

• a central body comprising:
• a frame comprising a first tubular end for connecting an upstream hydraulic circuit comprising a first fitting and a second tubular end for connecting a downstream hydraulic circuit comprising a second fitting,
• an annular electrically insulating substrate that is fixed on an outer surface of the frame
• a passage passing through the frame to convey the fluid coming from the upstream hydraulic circuit to the downstream hydraulic circuit, said frame, being of cylindrical shape made of an electrically insulating material,
• a conductive printed circuit having a predefined resistivity and printed on said annular electrically insulating substrate,
• said conductive printed circuit having controlled electrical properties in order to conduct a part of the electrical charges flowing between the upstream hydraulic circuit and the downstream hydraulic circuit;
• said upstream hydraulic circuit comprising said first fitting comprising an annular connection portion extending over an outer periphery of an upstream portion of the frame substantially up to the substrate;
• said downstream hydraulic circuit comprising said second fitting comprising an annular connection portion extending over an outer periphery of a downstream portion of the frame substantially up to the substrate;
• a first electrically conductive annular seal forming the junction between the annular connection portion of the first fitting of the upstream hydraulic circuit and the substrate of the central body, and
• a second electrically conductive annular seal forming the junction between the annular connection portion of the second fitting of the downstream hydraulic circuit and the substrate of the central body.