A plumbing fitting includes a body portion 1 which is secured to a structure such as a wall framing in use by means of a mounting means 2. An inlet means 3 is linked to an outlet means 4 by means of an internal passage in the body portion. The inlet means is adapted to be secured to distributor pipework or hoses in use and the outlet means is adapted to be coupled to a flexible hose or a tap where it projects through a wall lining. The body portion 1 can slide within the mounting means 2, if sufficient force is used, so that after the coupling is made to an extended outlet means 4 the outlet means can be pushed back towards the wall structure to assist in the provision of a neat appearance.