Abstract: A device for coupling supports for valves, nozzles, jets or the like to fluid distribution pipes, comprising a ring that is divided into a first arc and a second arc, which are mutually complementary and are pivoted at a respective end, are free at the opposite end, and are suitable to surround externally a fluid distribution pipe, one of the first and second arcs being associable with a support for valves, nozzles, jets or the like, and a lever for closing the ring, which is articulated to the opposite end of the first arc and is provided with at least one tooth for engaging a pin formed at the opposite end of the second arc.