A 4" pipe 40" long with a shutoff valve should flow 1500 gpm and provide a smooth flow to pitot.
Arthur Tiroly ATCO Fire Protection Design Tiroly and Associates 24400 Highland Rd rm 25, CLE 44143 216-621-8899 216-570-7030 Cell WWW.ATCOfirepro.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Monday, May 13, 2013 4:57 PM To: [email protected] Subject: Re: Forward Flow Testing of BFP's The latest issue of Sprinkler Age has an article addressing how to calculate the flow for exercising the BFP. You certainly don't need six 2-1/2 hose valves. Approximately what pressure do you have at the riser when flowing the system demand (without hose demand unless you have INSIDE hose connections). Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org On May 13, 2013, at 12:45 PM, Ralphy Henderson <[email protected]> wrote: > I have an 8" riser with BFP with a system demand of 1500 gpm. I was > going to provide a test header consisting of (6) 2 1/2" hose valves > for the forward flow testing of the backflow preventor but then > starting wondering if there were any other means or devices out there > that could achieve the same flow? Fewer pieces would be nice. What are > you guys using out there? > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2241 / Virus Database: 3162/5820 - Release Date: 05/13/13 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
