Steve is correct. The flowswitches on the listed preassembled manifolds and risers are part of a listed assembly and are tested as part of that assembly. The recommendations on the Potter literature are recommendations, not code requirements. The purpose of the recommendation is to try to prevent people from installing the flowswitch too close to a valve or change in direction that could cause enough turbulence to prevent the flowswitch from operating when a calibrated flow test is conducted. The installer would then have to relocate the flowswitch.
Kind Regards, mike Mike Henke CET Sprinkler Product Manager ___________________________________________________ Potter Electric Signal Company, LLC 1609 Park 370 Place, St. Louis, MO 63042 phone: 800-325-3936 | direct: 314-595-6740 [email protected] | www.pottersignal.com -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of Steve Leyton via Sprinklerforum Sent: Monday, March 15, 2021 6:26 PM To: [email protected] Cc: Steve Leyton <[email protected]>; Matthew J Willis <[email protected]> Subject: RE: Check Valve After Flow switch? If an assembly is tested and listed as a unit, and passes the required tests as configured, then the listing supersedes such restrictions. I remember asking this question when Resi-Risers first came out. Steve L. -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Matthew J Willis via Sprinklerforum Sent: Monday, March 15, 2021 3:45 PM To: [email protected] Cc: Matthew J Willis <[email protected]> Subject: RE: Check Valve After Flow switch? I would as well. What happened to the "not within 24" of a drain or valve?" A check valve is a valve.. Right? R/ Matt -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of John Denhardt via Sprinklerforum Sent: Monday, March 15, 2021 3:36 PM To: [email protected] Cc: John Denhardt <[email protected]> Subject: Re: Check Valve After Flow switch? I would like to know why this is the "best way" for the installation. I am not stating it is not, just not sure why one way is better especially since we have done it a certain way for years. Thanks, John John August Denhardt, PE *Vice President, Engineering and Technical Services* *American Fire Sprinkler Association* m: p: 301-343-1457 214-349-5965 ext 121 w: firesprinkler.org <https://www.facebook.com/firesprinkler.org/> <https://twitter.com/afsa/status/1039528345367732224> <https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/> <https://www.instagram.com/firesprinklerorg/> *Our members are at the heart of everything we do* *Expand your business with ITM* Professionalize the role of your inspection team with AFSA’s ITM Inspector Development Program. This comprehensive 20-month program provides a blended learning environment teamed with robust curriculum created by top industry leaders. Plus, the first six-months of instruction is online. Now enrolling for Spring 2021 <https://www.firesprinkler.org/itm>. On Mon, Mar 15, 2021 at 5:05 PM Henry Fontana via Sprinklerforum < [email protected]> wrote: > Hello all. > > This is not a code change. Both manufacturers (one of them I work for) > state that this is the best way for installation and will not cause a > nuisance alarm. Ever since Globe came out with theirs I have > questioned why it’s designed this way. > > Henry Fontana > Operations Manager (NYC) > Johnson Controls Fire Protection > 100 Lighting Way| St#402|Secaucus|NJ > 07094<x-apple-data-detectors://2/0> > Cell: 201-210-9873<tel:201-210-9873> > [email protected]<mailto:[email protected]> > > > On Mar 15, 2021, at 5:01 PM, Jerry Van Kolken via Sprinklerforum < > [email protected]> wrote: > > I've just received a second product sheet from a different suppliers > for a pre-built riser where the check valve is located above/after the > flow switch. Is this arrangement a new change coming is the code? > > Jerry Van Kolken > Millennium Fire Protection Corp. > 2950 San Luis Rey Rd. > Oceanside, CA 92058 > (760) 722-2722 FX 722-2730 > > CONFIDENTIALITY NOTICE This e-mail and any attachments are for the > sole use of the intended recipients and contain information that may > be confidential or legally privileged. If you have received this > e-mail in error, please notify the sender by reply e-mail and delete > the message. 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