Good to know. The interesting thing to me Top was to find out that most of the common sprinklers do have the higher listing.
Rod at Rapid -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Top Myers Sent: Sunday, May 20, 2012 8:27 PM To: [email protected] Subject: RE: 175 psi As I recall the real issue is the listing on the fire sprinkler heads at higher pressures not because they will break but because of proving the spray pattern at higher pressures. Those sprinklers that are listed for higher pressures have been tested for strength as well as pattern of discharge. Top Myers RelMark Group 961 Pottstown Pike Chester Springs, PA 19425 610-321-2415 X-219 Cell 610-952-0965 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ron Greenman Sent: Thursday, May 17, 2012 10:30 AM To: [email protected] Subject: Re: 175 psi Threaded fittings a WOG 125 or 150. WOG is Water, Oil, Gas (not a British pejorative for non-Europeans--well it's that too but....). The lower number is for gases. Water, as Rod said, is 300. So don't crank the air pressure up above 125/150 on the Dry Pipe. On Thu, May 17, 2012 at 6:05 AM, Rod DiBona <[email protected]> wrote: > Looking at the anvil class 150 ci fittings that show a rating of 300 psi... > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Bill Shipman > Sent: Thursday, May 17, 2012 6:47 AM > To: [email protected] > Subject: Re: 175 psi > > What about the threaded CI or DI fittings. Aren't they class 125 or 150? > > On 5/16/2012 9:12 PM, Sprinkler Academy - C Bilbo wrote: > > Everyting we use except sprinkers are rated for more than 175psi...... > > > > And even the sprinklers are put through more than 300psi as they > > come > off of the manufacturing line.... > > > > Do you have a question about a specific porduct? > > > > > > > > > > > > > > > > > > It should be recognized that the above is my opinion as a member of > > the > NFPA, and has not been processed as a formal interpretation in > accordance with the NFPA Regulations Governing Committee Projects and > should therefore not be considered, nor relied upon, as the official > position of the the NFPA, nor any of their technical committees. > > > > Sincerely, > > > > > > Cecil Bilbo > > Academy of Fire Sprinkler Technology Champaign, IL > > 217.607.0325 > > www.sprinkleracademy.com > > [email protected] > > > > OUR STUDENTS SAVE LIVES!! > > > > > > > > > >> From: [email protected] > >> To: [email protected] > >> Subject: 175 psi > >> Date: Thu, 17 May 2012 01:04:28 +0000 > >> > >> Had an old thought challenged and I think I have learned something. > Situation: > >> > >> High rise building with a fire pump. Churn plus static to provide > >> 100 > psi (discharge side of most demanding hose valve) on combined > standpipe creates just over 200 psi on bottom floor. Instantly I think > to use pressure regulating valve for the lower systems, feed lower > systems before pump boost or run a secondary standpipe. Another > estimator tells me that most sprinkler components are rated for well > over 175. I didn't believe it but looking at several products from > several manufacturers seems to prove him right. There were a few > exceptions such as some sprinkler heads and hose valves but for the > pipe, fittings, valves etc there was no problem. If the project was FM > it would be tougher as most of the standard 5.6 heads were 250 UL but 175 FM. > >> > >> NFPA 13 2007 6.1.3 System components shall be rated for the maximum > system working pressure to which they are exposed but shall not be > rated at less than 175 psi for components installed above ground..." > >> > >> Am I missing something here or does over pressurization of the > >> lower > floor only require pressure reducing hose valves and not system prv's > as long as the components are rated for more than the "... maximum > system working pressure to which they are exposed..." which seems to > be the case for the vast majority of components. > >> > >> > >> > >> [Description: LOGO_10] > >> Rod DiBona > >> Vice President > >> Rapid Fire Protection > >> office : (605)348-2342 > >> fax : (605)348-0108 > >> cell : (605)391-3553 > >> www.rapidfireinc.com<http://www.rapidfireinc.com> > >> > >> -------------- next part -------------- An HTML attachment was > >> scrubbed... > >> URL:< > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attac > hments/20120517/8f1261f3/attachment.html > > > >> -------------- next part -------------- A non-text attachment was > >> scrubbed... > >> Name: image001.jpg > >> Type: image/jpeg > >> Size: 6561 bytes > >> Desc: image001.jpg > >> URL:< > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attac > hments/20120517/8f1261f3/attachment.jpg > > > >> _______________________________________________ > >> Sprinklerforum mailing list > >> [email protected] > >> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > -------------- next part -------------- An HTML attachment was > > scrubbed... > > URL:< > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attac > hments/20120516/226da935/attachment.html > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > -------------- next part -------------- An HTML attachment was > scrubbed... > URL: < > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attac > hments/20120517/db678390/attachment.html > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- 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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attach ments/20120517/2a757dfa/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
