Chris: If LW pipe was used, check the weld seam of the pipe in the area of the groove gasket seat, this area has been known to split the pipe at the weld seam during the roll grooving process. That split can grow over time.
As far as NFPA 13 goes, 6.5.3.2 Grooves cut or rolled on pipe shall be dimensionally compatible with the fittings. I've been interested in the "Groove" standards ever since I started to fabricate a patentable device which included a groove. How to protect it so the simply by changing the groove dimension or tolerance, someone else's device couldn't be called "unique". Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
