Agreed. There should be 3 definitions.
From: Sprinklerforum [mailto:[email protected]] On Behalf Of rongreenman . Sent: Friday, July 07, 2017 11:07 AM To: [email protected] Subject: Re: NFPA 20 2013 confusing wording When you guys are using "PRV" without further clarification, how do I determine when "R" is reducing, relief or regulating? On Fri, Jul 7, 2017 at 8:00 AM, Steve Leyton <[email protected] <mailto:[email protected]> > wrote: In USA, listings stop at 350 for now; in Canada, 400 PSI. These metrics the latest that I am aware of but if anyone out there knows of newer and higher ratings, chime in. SL From: Sprinklerforum [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of Roland Huggins Sent: Friday, July 07, 2017 7:59 AM To: [email protected] <mailto:[email protected]> Subject: Re: NFPA 20 2013 confusing wording What he said. Thank goodness for the master PRV in NFPA 14 so we can say if not allowed why’s it there? I’ve never gone looking so what’s the maximum rating available for PRV’s? Roland Roland Huggins, PE - Senior VP Engineering American Fire Sprinkler Assn. Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> Fire Sprinklers Saves Lives On Jul 6, 2017, at 6:50 PM, Travis Mack <[email protected] <mailto:[email protected]> > wrote: Yes. That is what we do with standpipes all the time. You can design for 300 psi, your components on the discharge side of the pump just have to be 300 psi rated. Travis Mack, SET MFP Design, LLC _______________________________________________ Sprinklerforum mailing list [email protected] <mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -- Ron Greenman [email protected] <mailto:[email protected]> 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-)
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