That's a really cool report that I hadn't seen before, but addresses systems comprised of non-potable water piping, such as (and especially) black steel. It is possible to build a completely NSF-compliant sprinkler system out of potable grade components, so why would a backflow be required? And don't say stagnant water Ron - that's a red herring and there is no code requirement in any published standard that refers to good or standard practices in that regard. Every plumbing system has dead ends - every fixture is on a dead end, for cryin' out loud.
SL -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Forest Wilson Sent: Wednesday, November 03, 2010 2:36 PM To: [email protected] Subject: Re: 13D Backflow prevention Please refer to the following: http://www.waterresearchfoundation.org/research/topicsandprojects/execSu m/158.aspx and http://books.google.com/books?id=X-f_x07RIgQC&pg=PR26&lpg=PR26&dq=wet+sp rinkler+systems+and+water+contamination&source=bl&ots=S_8_-SeIho&sig=lTv besgZN9ZbVT5nqrH3kGmc5kM&hl=en&ei=BM_RTPW8MZWSjAeCioW4DA&sa=X&oi=book_re sult&ct=result&resnum=2&sqi=2&ved=0CBYQ6AEwAQ#v=onepage&q=wet%20sprinkle r%20systems%20and%20water%20contamination&f=false These are reports on the impact of wet sprinkler systems on water quality. Testing indicates that water from fire sprinkler systems is not potable. On 11/3/2010 5:01 PM, Gary Stites wrote: > I am actually looking for your opinions as our water purveyors are asking us > for assistance and education... > > On Wed, Nov 3, 2010 at 1:51 PM, Gary Stites<[email protected]> wrote: > >> The water companies in our area are concerned about backflow prevention on >> 13D systems. With California adopting the IRC all the AHJ's are scrambling >> to put their spin on it! >> >> Anyway, what are the backflow concerns on a CPVC system that is not >> intertwined with the plumbing system? There is talk of requiring RP devices >> etc. Is a check-valve not sufficient? >> >> Thank You >> -- >> Gary Stites >> 661-213-9379 >> >> www.bakersfieldnbc.org/worshipteaminfo >> www.wgt.com/clubs/the_lookouts/default.aspx >> www.sprinklersoft.net >> Pandora Station http://www.pandora.com/?sc=sh43464983213902734 >> >> > -- Forest Wilson Project Manager Cherokee Fire Protection Co. 1855 Bellbrook Ave Ste C Xenia OH 45385 ph: 937-376-2333 fx: 614-455-4324 www.cherokee-fire.com Visit our blog: www.cherokee-fire.blogspot.com ******************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. ******************************************* _______________________________________________ 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)
