Southern Gas Network - various boxes used within the highway

By Trevor Hoath SGN

May 2014

Southern Gas Networks has used various descriptions of road and footway boxes over the years. They do not always have the words gas printed on them. The gas network comprises of low, medium and high pressure networks, each with their own risks.

All these systems will have a variety of the boxes shown and used for different reasons. It could be a service valve for domestic properties or a box to operate strategic valves for managing the network in an emergency or to support various planned operations. They can also be used for accessibility of pressure points and isolation points for pressure reducing installations.

Gas 01
Gas 07
Gas 02
Gas 08
Gas 03
Gas 09
Gas 04
Gas 10
Gas 05
Gas 11
Gas 06