I suspect that it true. Plus, just because a product isn't FM approved, doesn't mean it was ever tested by FM. The manufacturer (or other interested party) may not have paid for the testing by FM.
Mark Sornsin Ulteig Eng. Fargo, ND -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Todd Williams - FPDC Sent: Thursday, August 07, 2008 1:05 PM To: [email protected] Subject: RE: Backflows I'm sure FM tests more than leakage. At 01:32 PM 8/7/2008, you wrote: >Dear All, > >Question about UL listed FM Approved Flexible Pipes. > >A contractor told me: > >A. The cost of UL listed/FM approved Flexible Pipe is four (4) times as >much as UL listed pipe. > >B. There is no history about leakage of UL listed flexible pipe, thus >the addition of FM approval is redundant. > >I would appreciate any comments, public or private. > >Dan _______________________________________________ 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)
