I agree. I have had to design a system using dry valves in parallel to reduce the friction lost through the valves.
Matt Grisé PE*, LEED AP Sales Engineer Alliance Fire Protection *Licensed in KS & MO 913.888.0647 ph 913.888.0618 f 913.927.0222 cell www. AFPsprink.com -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of George Church Sent: Monday, February 08, 2010 12:44 PM To: sprinklerforum@firesprinkler.org Subject: RE: Strange piping arrangement Jeez I feel like I should be 20 yrs older for campfire stories. Back before there were 8" dry-pipe valves, we'd routinely tee to a pair and then bring em back together, usually with 8" but if this was a BIG system, then 10" wouldn't cause us to bat an eye. As for design criteria, would have been completely up to what was out there and what insurance carrier might have been involved, what AE firm, etc. And either everyone else seemed to know what they were doing on jobs of that nature, or I was still clueless and didn't know myself. But in general, FM or FIA/OIA/IRI or similar HPR carrier would know what to tell us to do. Working at ASCOA, if they didn't our SH contract reps, who generally handled these, were top flight. glc -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Phelps, Mark Sent: Monday, February 08, 2010 1:11 PM To: sprinklerforum@firesprinkler.org Subject: RE: Strange piping arrangement and/or it could be for maximum reliability. Complete redundency for valve failure. Mark at Aero -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org]on Behalf Of Chris Cahill Sent: Monday, February 08, 2010 11:01 AM To: sprinklerforum@firesprinkler.org Subject: RE: Strange piping arrangement 'cuz they don't/didn't make a 10" PA valve? Couldn't take the friction losses with 1-8"? SWAG... Chris Cahill, P.E. Fire Protection Engineer Sentry Fire Protection, Inc. _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field)
