Seismic (earthquake) Automatic Gas Shut-Off Valves

"The most common cause of earthquake related fire is broken gas lines." USGS Earthquake Hazards Program


Protect your home, your family and your investment

Earthquakes are a reality here in the Pacific Northwest. At least four faults pass beneath the Portland/Vancouver area, capable of producing earthquakes with magnitudes greater than 7. The single greatest risk to a building during an earthquake is gas lines leaking or rupturing, which could lead to a fire or explosion. We install seismic (earthquake) valves that will automatically turn off the gas to your house in the event of a strong earthquake. Some insurance companies even give discounts on your insurance!

We service the Portland and Vancouver areas. We are licensed, insured, and bonded to install automatic gas shut-off valves for seismic activity. These valves work for both Natural Gas and Propane. We are a Service Solutions Contractor for NW Natural.

CLICK HERE to view a graph of the earthquakes in the Pacific Northwest, provided by the Earth & Space Sciences Department.


Our residential division has been serving the Heating & Cooling as well as Fireplace needs of homeowners in the Portland, Oregon metro area and Southwest, Washington, such as Vancouver, Camas, Washougal, Ridgefield, Yacolt, and Battleground areas since 2001. During our 10 years of servicing these towns and the surrounding suburbs, many things have changed, but our core principle of making our customers’ priorities our priorities still remains.

Masterflame Gas & Hearth is the residential heating & cooling contractor that our customers repeatedly turn to for trustworthy products and dependable service. You and your family deserve comfortable indoor warmth throughout the northwest's windy, cold winters. And, when Portland or Vancouver's summer temperatures and humidity are at their highest, Masterflame Gas & Hearth is the residential air conditioning contractor to call.

We also offer immediate, expert fireplace and gas line repairs in the case of an emergency.  We also service, sell, and install gas water heaters, including tankless water heaters.  We are also certified in installing gas piping and gas lines, both underground and inside the building.  We have threading machines that will adjust up to 2” in Diameter, so no job is too big or too small.

Masterflame Gas & Hearth offers state-of-the-art mechanical solutions for all your Natural Gas or propane needs. Whether it is a design/build or plan/spec construction project, our experienced staff of a mechanical engineer and field personnel will provide you with the most cost effective, technologically-advanced solutions available.

Our preventive maintenance programs effectively help maintain your home or workplace. It is our aim to ensure you won’t need additional repairs or services again anytime in the near future. Our professional technicians treat every job as if it was their own, and that means providing solutions that last.

Masterflame Gas & Hearth is rated one of the top Natural Gas and Propane contractors because we remain consistent to our belief that our customers’ needs come first.  We are a Norwest Natural Gas certified contractor.