Flow switches at the booth are often there to shut down a solenoid valve supplying the paint, or turn off high temp devices within the booth, turn off fans, close dampers, etc. rather than just initiate alarms
On Wed, Aug 30, 2017 at 1:15 PM, Prahl, Craig/GVL <[email protected]> wrote: > From past design discussions, this section assumes the area in which the > booths are installed is protected by an automatic sprinkler system and that > sublevel sprinklers are provided within the spray booths. The sublevel > sprinkler array in the booth(s) being provided with a control valve of the > indicating type to help facilitate repairs and replacement of sprinklers > within the booths often due to deposits accumulating on the sprinklers. By > providing a separate control valve accessible from floor level, the system > can be closed off for repairs without impairing the overhead sprinkler > system. > > I haven't found any requirement to have a separate flow switch since the > booths are typically fed from the same riser as the overhead system. Now > there may be unique installations where it is desirable to have a second > flow switch local to the booth(s) to indicate flow within the booth(s). > This would only be beneficial where you can differentiate between specific > alarm devices. > > > Craig L. Prahl > Fire Protection Group Lead/SME > CH2M > 200 Verdae Blvd. > Greenville, SC 29607 > Direct - 864.920.7540 > Fax - 864.920.7129 > CH2MHILL Extension 77540 > [email protected] > > > -----Original Message----- > From: Sprinklerforum [mailto:[email protected]. > org] On Behalf Of Jeremy Blocker > Sent: Wednesday, August 30, 2017 3:49 PM > To: [email protected] > Subject: Re: Paint Spray Operations [EXTERNAL] > > In Denver this came up and the FPE stated 1 valve can operate multiple > booths but the flow switch depended on the direction of flow. If the > piping allowed flow in opposite directions we would have to use 1 flow for > each direction. > > Jeremy Blocker > Sent from my iPhone 6 > > > On Aug 30, 2017, at 1:10 PM, JD Gamble <[email protected]> > wrote: > > > > Based on NFPA 13 22.4.1.5 (16 ed) (requiring a control valve for the > > paint spray application area), would this suggest a separate control > > valve for each type of booth within the spray area or is it intending > > to suggest a separate control valve for the area only? > > > > Is each booth its own system? > > Can you use a single control valve with multiple flow switches for > > shunt trips? > > > > Thoughts? > > > > > > > > Life Safety Solutions of Sheridan > > > > JD Gamble > > [email protected] > > (307) 763-3361 > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > -- Ron Greenman [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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