Doesn't 7.2.2 (3) essentially limit you to (2) hose valves per pressure reducing device? Jack Fairchild
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Leyton Sent: Monday, March 07, 2011 12:31 PM To: [email protected] Subject: RE: Manual vs Auto SP Use a pressure reducing valve manifold on the discharge main in accordance with 7.2.2. The foregoing is my opinion only and does not necessarily represent the opinion or intent of the NFPA 14 Technical Committee on Standpipe and Hose Systems. Steve Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Greg McGahan Sent: Monday, March 07, 2011 9:29 AM To: [email protected] Subject: Manual vs Auto SP What do you do with an existing SP system that far exceed the pressure requirement when performing calcs...nearly 200 psi over the curve due to the fact that you are flowing 1,250 gpm through 4" pipe. The owner wants to classify the system as MANUAL and utilize a FD to feed the system but leave the fire pump connected. The system still does not work when using only the FDC feeding the system due to the fact that the FD only plans to utilize 2 each 2-1/2" hose to connect to the FDC. The owner - a large Federal Entity - wants to make this a HYBRID system utilizing the Fire Pump and the FDC combined. I can't find a correct way to do this...thoughts? Greg -- Greg McGahan Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 fax 850-937-1852 _______________________________________________ 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) _______________________________________________ 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)
