Charles - The 50' rule applies when butterfly valves are used. John August Denhardt, P.E., FSFPE Strickland Fire Protection Incorporated 5113 Berwyn Road College Park, Maryland 20740 Office Telephone Number: 301-474-1136 Mobile Telephone Number: 301-343-1457 FIRE SPRINKLERS SAVE LIVES - Can you live without them?
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Charles Thurston Sent: Wednesday, October 02, 2013 1:56 PM To: Jeremy Frazier Subject: Re: NFPA 20 (2010) 4.27.3.1 Hello Jeremy, Set your back-flow vertical, 90 off the top end, Then drop to the pump off the bull of the T, Run of the T goes onto the pump bypass. It is easy to get the 10 pipe diameters in this way. Wednesday, October 2, 2013, 11:51:50 AM, you wrote: > BFp to be installed 50' from the fire pump suction flange (as measured along > the route of the pipe). Is this a typo? What it the reasoning for having > such a long run of pipe without valves? In a small fire pump room with a > bfp, It would seem you would have to do a bunch of zig zags with the pipe > just to meet this requirement. > > Jeremy Frazier > Designer > Cavalier Fire Protection > P:571-931-1004 > F:571-931-1010 > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -- Best regards, Charles mailto:[email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
