About us

A seismic gas shut off valve (SGSV) is an inexpensive one-time measure to increase the safety and well-being of your residence or business. 


Seismic Shutoff installs seismic gas shut off valves (SGSV) to stop the flow of gas automatically when earthquake activity of magnitude 5.2 or greater occurs.


When activated the valve will no longer allow gas to flow through the line into your residence, business or facility hence preventing gas explosions and fire. 


Installation of the SGSV is performed by licensed, certified and insured gas pipe installers. 

about Seismic ShutoFF

As the City of Seattle had no gas safety policies, guidelines or plans in place for fires fed by gas leaks caused by earthquakes, Seismic Shutoff was formed with a mission focused on the installation of SGSV for commercial and residential customers to limit the extent of fire damage and reduce the recovery from earthquakes. Seismic Shutoff is now licensed and operating in the states of Washington, Oregon and California. 

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Our Company

Seismic Shutoff installs residential automatic earthquake gas shut off valves (SGSV) in Greater Seattle, WA and Newport Beach, CA to stop the flow of natural gas when earthquake activity of magnitude 5.2 or greater occurs. Our commercial services are available in WA, OR and CA. Call for a quote. 



2425 33rd Avenue W

Suite 201

Seattle, WA 98199

Mon - Fri: 8am - 6pm
​​Saturday: 8am - 5pm  
​Sunday: By appointment 

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Washington: SEISMSL820NB
​​Oregon: 223700

California: 1052876


Greater Seattle, WA:  Residential | Commercial
​​Oregon: Commercial

California: Commercial | Residential - NOW INSTALLING IN Newport Beach, CA!

Call  949-424-2510 to schedule your installation!

© 2020 Seismic Shutoff

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