With a Single clapper FDC the clapper swings "mid-position" while flowing. I do not agree this should be allowed, just have seen those argue for it. NFPA #13 Does require the contractor to install the test outlet see 8.17.4.6.1 (07)
R/ Matt Matthew J. Willis Living Water Fire Protection, LLC. 1160 McKenzie Rd. PO Box 877 Cantonment, FL. 32533 850-937-1850 Voice 850-937-1852 Facsimile [EMAIL PROTECTED] ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Mark Sornsin ----- >Sent: Friday, May 30, 2008 1:33 PM ----- >To: [email protected] ----- >Subject: RE: 200 psi test for components rated 175 ----- > ----- >Don't most FDCs include clappers? How do you backwards ----- >flow out an FDC with clappers? And what do you do when ----- >the system has a high demand volume - say over 500 gpm? ----- >You'll have a tough time flowing it out an FDC even ----- >without clappers. ----- > ----- >Seems it's the responsibility of the engineer of record ----- >(when they're ----- >present) to require the test outlet so the owner has a ----- >means of meeting the requirements of NFPA 25 - even if ----- >the inspectors never end up testing the backflow. ----- > ----- >When there is not an engineer of record, and a ----- >contractor is asked to design/install a system per code, ----- >I don't believe there is any language in NFPA 13 that ----- >would force a contractor to install the test outlet. ----- > ----- >Mark A. Sornsin, PE ----- >Fire Protection Engineer ----- >Ulteig Engineers, Inc. ----- >Fargo, ND ----- >701.280.8591 ----- >[EMAIL PROTECTED] ----- > ----- > ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Gregg Key ----- >Sent: Friday, May 30, 2008 12:23 PM ----- >To: [email protected] ----- >Subject: Re: 200 psi test for components rated 175 ----- > ----- >Yep, that could be the reason it is shown. ----- > ----- >Yea Matt, sorta trick question, We have installed a few ----- >wall hydrants at Military bases. ----- > Funny thing is that they do there own inspections and ----- >they don't follow NFPA 25 that requires an annual ----- >forward flow on the backflows. So the only systems in ----- >our area that do have them , are not being used. ----- > OK while we are at it, how many NFPA 25 inspectors ----- >perform the required forward flow test annually? ----- > ----- > ----- >- ----- >_______________________________________________ ----- >Sprinklerforum mailing list ----- >[email protected] ----- >http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum ----- > ----- >To Unsubscribe, send an email ----- >to:[EMAIL PROTECTED] ----- >(Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
