Does the panel monitor low suction? If so that would be an acceptable means of monitoring that pipe section. Chris Dorn
[cid:image001.png@01D8A8B0.C08D0F10] From: Matt Grise <m...@afpsprink.com> Sent: Friday, August 5, 2022 9:45 AM To: Discussion list on issues relating to automatic fire sprinklers <sprinklerforum@lists.firesprinkler.org> Subject: [Sprinklerforum] Re: WFD In Pump Suction Line I get the concern also - but the request seems to be in direct contradiction to the code. And it introduces a paddle that could jam in the pipe or detach from the switch and flow into the pump. Many plan reviewers are limited to enforcing codes, not enforcing their personal preferences. Can they produce a code section that requires monitoring in this portion of the system? There are ways to detect flow without a paddle sensor - maybe an alternate detection method? If it must be there, I would say at least 50' upstream of the pump similar to a butterfly valve. Matt From: Taylor Schumacher <tay...@sfsprinkler.com<mailto:tay...@sfsprinkler.com>> Sent: Friday, August 05, 2022 8:35 AM To: 'sprinklerforum@lists.firesprinkler.org' <sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>> Subject: [Sprinklerforum] WFD In Pump Suction Line Does anyone have any experience with a paddle-type water flow detector in the suction line of a fire pump? I have a long section of pipe between my backflow preventer and the suction flange of my pump that a plan reviewer wants supervised. I get the concern, but I have concerns with the paddle in the suction piping. Any thoughts or experiences are greatly appreciated. Taylor Schumacher ET
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