I would question the value since it can potentially isolate the two feeds ONCE 
closed (though more than one valve would likely need to be closed to really 
accomplish it) and what is the likelihood of that happening after a major 
earthquake.  Right at the top of their list??


Roland Huggins, PE - VP Engineering
American Fire Sprinkler Assn.       ---      Fire Sprinklers Saves Lives
Dallas, TX
http://www.firesprinkler.org





On Aug 13, 2013, at 11:00 AM, "Martinez, Dewayne" 
<[email protected]> wrote:

> I was going to propose the same idea to the AHJ.  With the water main in
> front of the building being supplied from different mains at either end
> I thought of putting a sectional valve between the two water lead in's
> to be able to isolate each service.  Sounds like you don't agree with
> that, how come?  

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