Coupling for connection of elements of an air-conditioning system and cooling circuit of an air-conditioning system

A coupling (1) for connection of elements of an air-conditioning system comprising a first connecting member (2), wherein the first connecting member (2) has a ball head (3) at one end, a second connecting member (4), where the second connecting member (4) has a ball socket (5) at one end for receiving the ball head (3) of the first connecting member (2), wherein a first fastening flange (6) is placed movably on the first connecting member (2), wherein the first fastening flange (6) has a further ball socket (7) for receiving the ball head (3) and wherein a second fastening flange (8) is formed from the second connecting member (4), which can be connected to the first fastening flange (6) in such a manner that the first connecting member (2) is pivotable relative to the second connecting member (4).