Device for connecting and blocking hollow elements for the formation of fluid distribution plants

A connection arrangement comprising:

• first and second hollow elements each defining a hole, said first hollow element defining a C shaped groove;
• an anchoring plate inserted into said C shaped groove of said first hollow element;
• a fastener connected to said anchoring plate;
• a connecting plate connected to said anchoring plate through said fastener, said connecting plate being connected to said second hollow element;
• a protrusion adjacent said first hollow element and extending from one of said anchoring plate and said connecting plate, said protrusion and said first hollow element being formed of a material and said protrusion having a shape to cause said protrusion to penetrate into a surface of said first hollow element when said fastener pulls said anchoring plate to said connecting plate.

A device for connecting and blocking hollow elements used as piping for fluids,

• where each hollow element has a central hole and C shaped grooves running along its walls and opening outwards, and
• where plugs or anchoring plates are provided which can be inserted singularly into the channel shaped grooves of the adjacent elements to be connected, one connecting plate resting on one wall of said adjacent elements, and anchoring screws inserted into holes in said connection plate and screwed into said anchoring plates to block the plate on said adjacent elements,
• characterised in that at least the connecting plate has protrusions or contact grips designed to physically penetrate into the surface of the elements to be connected when the connecting plate is anchored to the anchoring plate by the screws,
• the connecting plate has additional holes to receive pins which project from a body of a two or three way joint, placed between and connecting two or more hollow bars or section pipes.