Thanks Mike. This is the reason I inquired, but did not initially specify in my query. I came across three installa-tions where the flow switch is a whole lot closer to the control valve and drain than the 24 inches speci-fied in the manufacturer's (Potter Signal) litera-ture, where it is indicated as a "should" and not a "shall."
We usually have a problem with this when the installa-tion is inspected by our local FM Global engineers, as they are used to seeing the switch mounted at least 2 feet above the drain valve. Thanks again for the direction. Loren Johnson --- [EMAIL PROTECTED] wrote: > FYI The distance from a fitting or valve is only a > "should" not a shall. There are no UL or NFPA > requirements regarding distance. There are a number > of riser assemblies on the market that put the > switch closer than the stated 24" from a valve or > drain. If the switch works during the test after > installation it's a good installation. > > Mike Cabral > > ---- Steve Leyton <[EMAIL PROTECTED]> > wrote: > > Look at the tech data sheet for the switch. For > Potter Signal products in the installation > guidelines ... > > > > Steve Leyton > > Protection Design & Consulting > > > > > > -----Original Message----- > > From: Loren Johnson [mailto:[EMAIL PROTECTED] > > Sent: Thursday, February 08, 2007 11:06 AM > > To: Sprinkler Forum > > Subject: WATERFLOW SWITCHES > > > > > > Forum: > > > > Can anyone direct me to where it indicates that a > > waterflow switch for a wet pipe system has to be > so > > many inches away from the control valve or an > > elbow/tee? > > > > I seem to have seen this somewhere before, but now > I > > am unable to locate it. I thought it was in a pre- > > vious edition of 13, but I'm not sure. > > > > Thank you. > > > > > > Loren Johnson - CFPS, CET > > Fire Protection System Consultant > > The Hitchcock Company > > Peoria, IL > > > > > > > > > ____________________________________________________________________________________ > > Do you Yahoo!? > > Everyone is raving about the all-new Yahoo! Mail > beta. > > http://new.mail.yahoo.com > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > ____________________________________________________________________________________ Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/features_spam.html _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
