A clip for retaining the connection of a socket fitting to a plug fitting of a receptacle connector. The clip includes a first connection end, a second connection end, and an elongated retaining portion. The first connection end include a tube aperture configured to be rotatably connected to one of a first tube and a second tube through having the tube inserted through the tube aperture. The second connection end includes a tube connector configured to be selectively connected around the other of the first tube and the second tube. The elongated retaining portion includes a first retaining end and a second retaining end, the first retaining end fixedly connected to and configured to bend in relation to the first connection end, and the second retaining end fixedly connected to and configured to bend in relation to the second connection end.
