Seismic shut-off valves
Seismic shut-off valve installation in San Francisco.
An automatic valve at the gas meter that closes the supply when an earthquake shakes the line. Fitted, tested on site, and explained before we leave.
The gas shuts off when the ground moves.
Violent shaking can break a gas line, and natural gas escaping into a home needs only a spark to become a fire. A seismic shut-off valve sits at the gas meter, senses the shaking, and closes the supply automatically, so the meter stops sending gas into a line the earthquake may have broken.
The valve needs no electricity. Once it trips it stays closed until someone resets it by hand, and before anyone does, the home should be checked for leaks.
We have installed gas piping and seismic valves in San Francisco since 1998. Every installation follows the same five steps, listed below, and each one is done to the safety standards that apply to gas work.
“Nigel arrived with his crew right on time, quoted the job, and once agreed upon, set a time and date. They were professional and courteous, I highly recommend them!”Beckie P.Read all 22 testimonials
How we install it
Five steps, every time
Inspection
We check the condition of the gas lines first, because a problem in the line affects how well the valve can protect it.
Location
We choose the position where the valve will work. How well it works depends on where it goes.
Installation
The valve is connected directly to the gas meter with a firm, secure fit.
Testing
We simulate the conditions it is built for and confirm it responds before we call the job done.
Walkthrough
We show you how the valve works, how to tell it has tripped, and what to do after an earthquake.
Questions
What clients ask first
It sits at the gas meter and closes the gas supply to the building automatically when it senses the shaking of an earthquake.
No. The valve works without electricity, so it still closes when the power is out.
It stays closed until it is reset by hand. The home should be checked for gas leaks before anyone resets it. If you smell gas, leave the building, do not switch anything on or off, and call PG&E.
We do not quote times over the phone. The inspection of the gas lines comes first, and we will tell you what the job involves once we have seen them.
Yes. The shop is in Pacifica, and we also work in Daly City, San Mateo, Menlo Park, Atherton, Belvedere, Berkeley and Piedmont.
Begin
Tell us about the home. We’ll take it from here.
Tell us the address, and add a photo of the gas meter if you can reach it safely. If you smell gas, leave the building and call PG&E first.