There are a couple of old buildings in Seattle that I know of with basement only systems and no automatic water supplies (although equipped with regular sprinklers) that must be pumped. I wonder if that was a common practice back in the later part of the nineteenth and early twentieth centuries. If so I can see a requirement for a FDC. Today I wonder how often FDs pump sprinkler systems when they could be using those resources (hydrants and pumpers) for their hoses.And if never (or even seldom) that then leads to the question of why do we still have FDCs for sprinkler systems. There are probably many very good reasons I'm not considering, I don't and never have humped hoses, but I don't see any. And if there is no reason for an FDC (particularly on a building that could qualify as 13R) then why else would we need to have pipe that withstands 175 psi working pressure (discounting combination systems that don't regulate the sprinkler tie in to 130 psi or less). Then I would think PEX without the FDC would work in 13R. Rhetorical questions of course as the FDC is required.
On Fri, Nov 6, 2015 at 10:49 AM, Pete Schwab <[email protected]> wrote: > I am not aware of any Pex piping available for NFPA 13R. The Pex product > cannot meet the 175 PSI requirement at higher temperatures. NFPA 13D allows > 130 PSI at 120° which allows Pex. > The only other plastic product listed (FM Approved) for fire protection > that I am aware of is Aquatherm red pipe. > > http://www.aquatherm.com/aquatherm-red-pipe-polypropylene-sprinkler-piping > > > Peter Schwab > VP of Purchasing and Engineering technologies > > Wayne Automatic Fire Sprinklers Inc. > 222 Capitol Court > Ocoee, Fl 34761 > > Mobile: (407) 468-8248 > Direct: (407) 877-5570 > Fax: (407) 656-8026 > > www.waynefire.com > > > > > > > > -----Original Message----- > From: Sprinklerforum [mailto: > [email protected]] On Behalf Of Matt Grise > Sent: Friday, November 06, 2015 10:30 AM > To: [email protected] > Subject: pex for 13R > > Has anyone developed pex piping for 13R applications? Is anyone pursuing > that? > > Thanks! > > Matt Grisé PE*, LEED AP, NICET II > Sales Engineer > Alliance Fire Protection > 130 w 9th Ave. > North Kansas City, MO 64116 > > *Licensed in KS & MO > > 913.888.0647 ph > 913.888.0618 f > 913.526.7443 cell > www. AFPsprink.com > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
