the FDC needs t be fed from a hydrant on the source side of the dcda in order to work properly.
Garth ----- Original Message ----- From: "Charles Thurston" <[EMAIL PROTECTED]> To: "Greg McGahan" <[email protected]> Sent: Thursday, January 10, 2008 2:43 PM Subject: Re[2]: fdc loop > Hello Greg, > > Looks like a check valve is needed in the leg of the tee that feeds > the standpipe and sprinkler. The FDC needs to be connected to that > legs also before that check valve. Otherwise it is a useless loop as > you suspect. > > This is how I see your drawing, I condensed it a little to stop line > wrap. > > Hydrants are "O" and fdc is "X" > STANDPIPE > > I > I > "O" O" I > I---------I------I-------"X"----dcda-----SOURCE > > > "I" belive it should look like this: > > Hydrants are "O" and fdc is "X" > ^ is a check valve > > STANDPIPE > > I > I > "X" fdc > I > "O" O" "^" check valve > I---------I------I--------------dcda-----SOURCE > > > > > > > Thursday, January 10, 2008, 1:51:48 PM, you wrote: > > > My picture did not work, sorry. > > > Deal is this: Source to backflow with FDC, 6" continues to tee that feeds > > standpipe and sprinkler, from the tee 6" continues to 2 fire hydrants. > > > When FD connects to hydrant they will connect back to fdc with the sprinkler > > main in between the 2. Will this create a useless loop or will it work? > > Thanks, > > Greg > > > Living Water Fire Protection, LLC > > 1160 McKenzie Road > > Cantonment, FL 32533 > > 850-937-1850 > > Fax: 850-937-1852 > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Greg McGahan > > Sent: Thursday, January 10, 2008 9:09 AM > > To: [email protected] > > Subject: fdc loop > > > We have a situation as follows: > > > > > > Hydrants are "O" and fdc is "X" > > > > > > > > > STANDPIPE > > > I > > > I > > > "O" "O" I > > > > > I----------------------------I------I-------------------------"X"-dcda------ > > ---SOURCE > > > > > > Question: Will this work or does it create a loop that will prevent the > > standpipe from receiving adequate pressure? > > > > > > Thanks, > > > Greg > > > > > > Living Water Fire Protection > > > 1160 McKenzie Road > > > Cantonment, FL 32533 > > > 850-937-1850 > > > Fax: 850-937-1852 > > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > To Unsubscribe, send an email > > to:[EMAIL PROTECTED] > > (Put the word unsubscribe in the subject field) > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > To Unsubscribe, send an email > > to:[EMAIL PROTECTED] > > (Put the word unsubscribe in the subject field) > > > -- > Best regards, > Charles mailto:[EMAIL PROTECTED] > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
