What is an Earthquake Valve?
An earthquake valve (or seismic valve) is an automatic method to shut off the low pressure regulated gas supply to a structure during a major earthquake and/or if a pipe is broken. These are applicable both to utility-supplied natural gas and to gas from liquefied petroleum gas.
While it's possible to manually shut off your natural gas, the following specialized valves are available that can automatically shut off your service in case of an emergency:
Earthquake natural gas shut-off valve (also known as a seismic natural gas shut-off valve) automatically shuts off your natural gas service when an earthquake of a sufficient magnitude occurs at your home.
An excess-flow valve automatically shuts off your natural gas service when a significant natural gas leak or overpressure surge occurs at a pipe or appliance located beyond the point where the valve is installed.
Installation of an Earthquake or Excess-flow Valve
If you want to have an earthquake natural gas shut-off or excess-flow valve installed or are required to have one by your insurance company or the local Department of Building and Safety, the valve must be installed on your house line.
Under the regulations of the California Public Utilities Commission (CPUC), General Order 112-E, only SoCalGas® or its certified contractors are authorized to operate the natural gas service shut-off valve.
Proper Placement of Your Valve
When you hire a qualified professional to install your earthquake or excess-flow valve, you'll need to make sure that the valve is installed on your house line. Your Riverside Heating & Air Conditioning Experts for Installation, Repair, & Service