Ironically, Allied had trade names of Armadillo and GatorShield at some point for piping products.
However, at this point IDOD pipe is not available in the USA; they are working on getting making it available here, date not set. We'd used it- and as anyone who has seen it- it is a completely different product than conventional hot-dipped galvy. In a class by itself and we look forward to its return. glc -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Tuesday, February 01, 2011 10:48 AM To: [email protected] Subject: Re: Butterfly vs. Gate valves: corrosion Does it have alligators on it? At 10:31 AM 2/1/2011, you wrote: >There is Izod pipe. The manufacturing system, for lack of a better >description, kind of semi alloys the zinc with the steel in layers. > >On Tue, Feb 1, 2011 at 7:19 AM, Mark Sornsin <[email protected]> wrote: > > Scott: > > > > I don't know if this was already addressed - but to your point > about zinc coated pipe. We specify it over schedule 40, at least in > dry-pipe systems, because it performs better than schedule 40. Yes, > galvanized piping will corrode eventually; but not nearly as fast as > black pipe (in a dry system). But maybe as importantly, the level of > scale build-up will be considerably smaller. The more scale build-up, > the more opportunity for scale to dislodge during > system activation and obstruct flowing sprinklers. FM still > prefers galvanized steel to black on dry and preaction systems, though > they'll accept black steel when the system 'air' pressure is > maintained with an inert gas. THAT may be the ideal solution, if you > can get the owner to spend the money on an inert gas system. > > > > Mark A. Sornsin, PE| Fire Protection Engineer Ulteig Engineers, > > Inc.| Fargo, ND [email protected] > > > > > > ------------------------------------------------------ > > galvanized pipe: not accepted in Mist Systems by FM > > for the very reason that one can not guarantee the plating has integrity > > across the entirety of a twenty-one foot stick. > > which begs the question, why are we specifying zinc plated pipe > > and not home-rule, old-school Sch 40 black-steel? > > > > > > Scot Deal > > Excelsior Fire Protection > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > For Technical Assistance, send an email to: > > [email protected] > > > > To Unsubscribe, send an email > > to:[email protected] > > (Put the word unsubscribe in the subject field) > > > > > >-- >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 > >They are happy men whose natures sort with their vocations. -Francis >Bacon, essayist, philosopher, and statesman (1561-1626) >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > >For Technical Assistance, send an email to: [email protected] > >To Unsubscribe, send an email >to:[email protected] >(Put the word unsubscribe in the subject field) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
