The most energetic earthquake on record in North America occured at New Madrid, Missouri. A 1949 earthquake in Washington State killed people, and destroyed many Seattle buildings and cars. That quake so damaged the Washington State capitol building in Olympia that the dome had to be dismantled and rebuilt. The recent earthquake at Hegeben Lake near Yellowstone National Park killed numerous people. Many of them were parked outdoors in a camp ground.
Earthquakes can occur anywhere in the United States.
Geologists rank the Pacific Northwest as the area most likely, outside of Alaska, to have earthquakes of huge intensity. We offer two types. Both of them are excellent. The valve will shut off gas supply instantly in the event of a quake of intensity between 5 and 6 on the Richter Scale. Measure your input gas pipe size at the house wall to choose the correct fit of valve.