Rob Amaral Posted January 12, 2004 Report Share Posted January 12, 2004 Folks: Anybody know of manufacturing problems with leaky 'mechanical tees' in 'wet' (glycol-filled) fire sprinkler systems? Name "National" was found on collar portion of the tee, FM-approved logo also found there. Any ideas? I'm getting stumped on "national" as far as Googling. Help would be appreciated. Quote Link to comment Share on other sites More sharing options...
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