Ron,
I believe Greg is referring to 2010 edition. Bobby Gillett Sr. Project Manager Key Fire Protection, Inc. (731) 424-0130 office (731) 424-9285 fax (731) 267-4853 cell <mailto:[email protected]> [email protected] _____ From: [email protected] [mailto:[email protected]] On Behalf Of Ron Greenman Sent: Friday, April 01, 2011 9:09 AM To: [email protected] Subject: Re: figure 7.6.3.4 - antifreeze loop with relief valve The usual Greg. 7.6.3.4 of what edition? Now somebody will take the time to figure it out and reply but I have every edition of 13 going back to 1978 and I'm not the oldest guy out here, and I'd like to look at the figure you refer to and see what you're talking about. Or I could pull out my '78 and say it doesn't exist. The answer to your second question is: Machine: The relief port is between the first and second checks and is a low pressure relief, not high. Practical: Just using a relief dumps the expensive anti-freeze solution which is then diluted when the pressure goes down and more fresh water is introduced. On Fri, Apr 1, 2011 at 6:05 AM, Greg McGahan <[email protected]> wrote: > Does anyone know why if you use figure 7.6.3.4 with a relief valve, why do > you have to incorporate the loop instead of going straight like you can if > you have an expansion tank? > > And, if the backflow preventer is an RPZ, wouldn't it serve as the relief > valve? > > Thanks, > Greg > > -- > Greg McGahan > Living Water Fire Protection, LLC <http://www.livingwaterfp.com> > 1160 McKenzie Road > Cantonment, FL 32533 > 850-937-1850 > fax 850-937-1852 > _______________________________________________ > 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) _____ No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1209 / Virus Database: 1500/3543 - Release Date: 03/31/11 _______________________________________________ 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)
