If one depends on the listing to determine and state such a conflict, one is walking on thin ice. In other words, don't look at the absence of a restriction in the listing and conclude that "it must be ok". The listing agency does a series of tests/evaluations based on requirements in the applicable standard (NFPA 13 in this case). Unfortunately, if NFPA 13 is ambiguous or doesn't address the arrangement, the listing agency covers by making a blanket requirement such as "must comply with the manufacturers installation instructions and NFPA 13". This passes the buck back to the standard and THE AUTHORITY HAVING JURISDICTION. So, if you ever hear someone state, "It's OK!! It's listed!!!", think twice and ask, "Listed for what? What tests were conducted that prove it's OK to do this?" J. Scott Mitchell, PE Fire Protection Engineer
--- On Fri, 6/27/08, Bobby Gillett <[EMAIL PROTECTED]> wrote: From: Bobby Gillett <[EMAIL PROTECTED]> Subject: RE: Flexhead on CPVC To: [email protected] Date: Friday, June 27, 2008, 2:17 PM Make sure you are using the cpvc sprinkler tees, I don't see any other issues as long as listings don't say any different. Bobby Gillett Project Manager [EMAIL PROTECTED] (731)-424-0130 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Todd Williams - FPDC Sent: Friday, June 27, 2008 1:58 PM To: [email protected] Subject: Flexhead on CPVC I'm working on a project where the client wants to use flexheads (or one of the clones) off CPVC pipe. Is there any restriction on this? Could the bending of the flexhead potentially put some weird forces on the CPVC pipe and glued fittings that could cause a problem? They claim they do it all of the time, but I've never seen it. Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut www.fpdc.com 860.535.2080 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
