A main drain test out of a 2 inch main drain valve is not capable of measuring the full capacity of the water supply on a municipal water system, nor would it yield accurate results. For example a significant pressure drop on a 2 inch main drain test would indicate a possible closed valve on the lead in piping from the supply main, thus not truly measuring the main capacity. So agreeing with Mr. Bilbo, would never rely on a 2 inch main drain test for designing a fire sprinkler system.
On Mon, Mar 11, 2019 at 11:56 AM Skyler Bilbo <[email protected]> wrote: > I may do this sometimes, just to get an idea of the water supply, early on > in a bid, but I would never rely on this for the design of a fire sprinkler > system. There are a lot of reasons for this. If you do a quick internet > search for "Water Measurement Using Two Inch Drain Tests", you will find a > pretty awesome educational resource for this. Make sure you read the whole > thing. Again, do not rely on a drain test. > > > -Skyler > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >
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