How low can you go with a hose monster with a 1.25" insert (don't have my chart handy)
Matt Grisé PE*, LEED AP, NICET II Sales Engineer Alliance Fire Protection 130 w 9th Ave. North Kansas City, MO 64116 *Licensed in KS & MO 913.888.0647 ph 913.888.0618 f 913.526.7443 cell www. AFPsprink.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of James Crawford Sent: Tuesday, April 26, 2016 12:16 PM To: [email protected] Subject: Forward Flow for a Backflow Preventer I know this has been discussed but can't seem to find it. NFPA #13 (2013) 8.17.4.6.1 Means shall be provided downstream of all backflow prevention valves for flow tests at system demand. We have a small office system, system demand 160 gpm, we have 100 psi static pressure, the system has a 2 ½" riser so a 1 ¼" drain, how much water can we get out of an 1 ¼" drain? Is there anything out there to help determine the size and or number of outlets required to forward flow at different system demands? Thank you James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Fax 604-888-4732 Cel 604-790-0938 Email [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
