I'm no scientist but I can think of several possible causes.
Excessive lubricant. Improper grooving (too deep or shallow) Mismatched components with different tolerances (Grinnell fitting-Vic coupling) Frequent draining and filling of system will make these problems more apparent due to the contracting and expanding of the gasket along with the introduction of air into the system. Thomas Watt _______________________________________________ Sprinklerforum mailing list http://lists.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)
