Expansion Joint

Expansion joints are provided in metal pipe lines at suitable intervals to take into account the change in pipe lengths due to temperature variations. The socket end is connected rigidly to an angular ring which slides freely over the spigot end.

A small gap is kept between the face of the spigot and inner face of the socket. A rubber gasket is provided between the socket and spigot and finally they are tightened with nut and bolt.