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/attachments/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/attachments/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/attachments/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/attachments/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
