The starting point
Gas arrives from the transmission pipeline at a city gate station. Here it is filtered, measured and reduced in pressure before it enters the city network. The station is the single point where the whole system is controlled.
Steel mains and regulating stations
Higher-pressure steel pipelines carry gas across the area. District regulating stations then reduce the pressure again for the local network, so each part of the system works at a pressure suited to its job.
Polyethylene distribution
Medium- and low-pressure distribution to neighbourhoods is commonly built with polyethylene pipe, which resists corrosion and is quick to lay. Joints are made by heat fusion and every joint is tested.
Service lines and meters
A service line runs from the street main to each customer, ending at a regulator and a meter. Industrial and commercial users usually need larger metering and their own pressure control.
Safety and monitoring
Isolation valves, pressure monitoring, odorant in the gas and regular leak surveys keep the network safe. Clear records of where every pipe runs make repairs and later extensions easier.
Approvals and coordination
Laying gas pipe in a city needs permission from road, utility and gas regulatory authorities, and careful coordination with other services under the street. Requirements change, so confirm them at the start.
If you are planning a gas network for an estate, a township or an industrial area, tell us the scope and we will outline the stations and pipework.