A SEISMIC GAS SHUT OFF VALVE (SGSV) is a simple one-time safety measure that keeps your home, business and neighborhood safe from fire caused by gas leaks during earthquake events of M5.2 or greater.

GREATER SEATTLE, WA: 425-610-8709
ORANGE COUNTY, CA: 949-424-2510

Why Choose Us?

Standard pricing for Residential 
Installation is  
$429.97 + tax
Installation includes valve, painting, bracing meter & piping;  relighting of pilot lights
Installation is performed by Licensed Gas Pipe Technicians 
30 year warranty on valve! 

Bill M.

"I couldn't be more pleased with this outfit...Unlike almost every other plumbing company I contacted to do a seismic valve installation at our condo, Seismic Shutoff gave me a bid for the work without requiring a $90 on-site inspection just to submit a bid -- which is unfeasible for people who reasonably try to get multiple bids for a costly project." - Yelp


Standard installation cost is $429.97 + tax and will take approx. 1 hour to complete. Book online or call to schedule.


Seismic Shutoff has extensive experience installing an array of large diameter and high pressure valves. Call to arrange a site visit or obtain a quote. 


Questions? Contact Us!

Our Company

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



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


Washington:  Residential | Commercial
​​Oregon: Commercial

California: Commercial | Residential - NOW INSTALLING IN ORANGE COUNTY, CA!

Call  949-424-2510 to schedule your installation!

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