I have always thought the check valve was to so the FDC did not pump up the underground.
Richard M. Carr, SET Project Manager/Design Diboco Fire Sprinklers, Inc. 325 Jackson Loop Road Flat Rock, NC 28731 rich...@diboco.com 828-696-3400 828-696-2288 Fax 828-708-9118 Mobile -----Original Message----- From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of Prahl, Craig/GVL Sent: Monday, July 09, 2018 10:34 AM To: sprinklerforum@lists.firesprinkler.org Subject: 2013 NFPA 13, Figure A.8.16.1.1 Check valve in supply Having a discussion with a designer concerning a manifolded riser assembly which has a dry pipe system and wet pipe system as shown in 2013 NFPA 13, Figure A.8.16.1.1. The question is the purpose of the check valve in the portion below the split at the manifold. Their FDC is piped in accordance with the detail. The designer says the check valve in the vertical is not needed because they are on a non-potable water supply and they have a PIV outside. Thoughts, opinions? Craig Prahl | Jacobs | Group Lead - Fire Protection | 864.676.5252 | craig.pr...@jacobs.com | www.jacobs.com ________________________________________________________________________________________ NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message by unintended recipients is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
