Living in an area that’s earthquake prone and overdue for a large one, I’ve spent a fair amount of time researching ways to limit any damage that we might experience in our home. In 1994 the Northridge earthquake and the resulting fires were the cause for the creation of a device that, I feel, is instrumental to possibly saving any home with a gas-line. It’s commonly referred to as a Northridge valve.
Simply, it’s a seismic device that stops the flow of gas at the house meter should there be any seismic event over 5.2 on the Richter scale. I got one and installed it myself for less than $150. To anyone concerned about preparing for an earthquake, this would be cheap insurance.
Thanks for all you do, - John T.