I use RPZ as a generic term. Also I am going under the assumption that I MUST separate my sprinkler from the domestic at the point of connection. However it was brought to my attention that this may not be required in NFPA anyway. While the thought of sprinkler water and domestic water sickens me a bit ... can someone show me where NFPA says I must separate them with a backflow?
John Irwin Sprinkler Construction Manager Critical System Solutions, LLC Cell: 813.618.2781 Email: jir...@criticalsystemsolutions.com<mailto:jir...@criticalsystemsolutions.com> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Steve Leyton Sent: Thursday, June 23, 2016 11:07 AM To: sprinklerforum@lists.firesprinkler.org Subject: RE: Two Backflows I don't think there's any prohibition and we've been asked to do this before. I would check with serving water and fire departments to be sure that both devices satisfy the requirement of their respective masters. RPZ's are not UL classified for fire service and usually configured with non-indicating valves for general water service. NFPA standards require ALL valves controlling fire protection water supplies to be LISTED (for fire service) indicating type and building code requires them to be supervised. Have fun ... Steve From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of John Irwin Sent: Thursday, June 23, 2016 8:03 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: Two Backflows I am working on a project where the developer and site contractor have decided that fire and domestic should share an underground line around the site and to the building. At the street there is a meter assembly and a Wilkins 375A RPZ. I would need to install an additional backflow at my point of connection because the line is shared all the way to the water room. Other than being a dumb way to do this and having two pressure losses in my calculations, is there any code that says I can't gave two RPZs in my water line? John Irwin Sprinkler Construction Manager Critical System Solutions, LLC 2830 Scherer Drive, Suite 300 St. Petersburg, FL 33716 Office: 727.209.5122 Fax: 727.209.5126 Cell: 813.618.2781 Email: jir...@criticalsystemsolutions.com<mailto:jir...@criticalsystemsolutions.com>
_______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
