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Shutting Off Your Gas in an Emergency

An earthquake shut-off valve automatically shuts off the gas flow to your property when triggered by a large magnitude earthquake. There are two types of earthquake shut-off valves:

  • Natural gas seismic shut-off valve – shuts off your gas service at the valve location.
  • Excess flow valve – automatically shuts off your gas when a significant gas leak or overpressure surge occurs at a pipe or appliance beyond the valve.
Installing Earthquake Valves

Your local Department of Building and Safety may require the installation of an earthquake valve.

  • The valve must be placed on your house line not on SDG&E equipment, including pipe fittings up to and including the last elbow or tee connecting to your houseline.

  • If installation requires gas service closure, contact us at 1-800-411-7343 to shut off and restore service.
  • Only SDG&E or its certified contractors are authorized to operate the gas service shut-off valve.
  • Unauthorized valve installations found on SDG&E facilities will be removed. Seismic or excess flow valves are not permitted anywhere in utility curb meter vaults.
Resetting Service
  • To restore gas flow, follow the manufacturer’s instructions for resetting the valve or contact SDG&E.
  • Contact a licensed, qualified professional or SDG&E to verify that no leaks exist, ensure appliances are safe, and relight the pilot lights.
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Residential: 1-800-411-7343 Business: 1-800-336-7343

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