Before the pump, between the backflow and the pump, and not after the pump discharge check? I'm trying to picture what's different than a typical set-up.
On Sat, Dec 5, 2009 at 10:09 AM, Forest Wilson <[email protected]> wrote: > The backflow is installed on the supply side of the pump, city side. > The sensing line is installed system side of backflow. > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Ron Greenman > Sent: Saturday, December 05, 2009 1:00 PM > To: [email protected] > Subject: Re: pump sensing line > > I'm surprised that the BFP was allowed on the system side of the pump > at all but since the sensing line is for pressure drop in the system > having it there (and allowing it as Tom says from the TIAs) makes > sense. > > On Sat, Dec 5, 2009 at 1:24 AM, Tom Duross <[email protected]> wrote: >> There was a TIA 2 or 3 editions ago for systems with the BFP on the >> discharge of the pump. Between the loss through the BFP checks and the >> hammer between the pump chv and the BFP, they allowed for moving it there. >> It's correct and moreover better, also OK to combine them from the same >> system tap (assuming the JP is also before the BFP). >> >> Tom >> >> >> I saw a pump recently with the sensing line installed on the system side > of >> the backflow. >> What is the reason for installing on the system, rather than the city side >> of the backflow? >> Am I correct that it should be on the city side? >> >> Forest Wilson >> >> _______________________________________________ >> 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 > Bates Technical College > Tacoma, WA > > Member: > SFPE, ASCET, NFPA, AFSA, NFSA AFAA, WSAFM > _______________________________________________ > 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) > -- Ron Greenman Instructor Fire Protection Engineering Bates Technical College Tacoma, WA Member: SFPE, ASCET, NFPA, AFSA, NFSA AFAA, WSAFM _______________________________________________ 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)
