PlumbRevise
MET1Revision card Premium

Gas meter and emergency control valve (diagram)

The order of a domestic gas supply from the incoming service to the appliances, and why the emergency control valve must stay accessible.

Left-to-right supply schematic. The incoming gas service feeds a valve symbol marked ECV (emergency control valve), then a meter with a regulator, then installation pipework to a gas appliance. A callout states that the ECV must be readily accessible, that its handle shows on and off, and that an emergency notice is displayed nearby.
Gas meter and emergency control valve layout

The schematic follows the gas supply from left to right: the incoming service pipe enters the building, reaches the emergency control valve, then the meter and its regulator, and finally the installation pipework that feeds the appliances.

Read the full Domestic Gas Meters note with Premium

You’re reading the free preview. PlumbRevise Premium unlocks the complete write-up, the worked detail for every Domestic Gas Meters note — plus timed tests on every module.

Plenty of modules are free to read in full.