FDC's don't count. It's magic.
Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Thomas Watt Sent: Thursday, January 20, 2011 10:11 PM To: [email protected] Subject: Re: Hangers and pressure surges Wouldn't every system with a FDC potentially see operating pressures above 100# ? Thomas Watt Foreman/Service Tech On Thu, Jan 20, 2011 at 3:28 PM, Roland Huggins <[email protected]>wrote: > I don't believe it was the intent to apply the requirement to the possible > build-up of pressure from surges but to the actual available supply. The > definition in 3.3.19 does state exclusive of surges. Combined with the new > expansion of requiring a relief valve on all wet pipe systems instead of > just gridded systems (7.1.2.1 2010 ed), says to me that it's the > characteristics of the water supply that drive the requirement. > > Roland > > > > _______________________________________________ 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)
