Just to add something perhaps non-sensical to all the sensical questions: could something about the over-head system be playing a part in this? What are the details of the over-head systems, i.e., wet, dry, grids, trees, 1/2" pressure relief set at ? PSI, pressures above and below clappers of riser checks, etc?
-----Original Message----- From: Haas, Edward [mailto:[email protected]] Sent: Saturday, August 17, 2013 10:53 AM To: [email protected] Subject: leaky yard mains! Yard main around large distribution center exhibits apparently random leaks every winter into spring. Leaks are excavated and repaired, and yard main then holds pressure all summer and fall - until the next season. Owner is tired of repeated impairments, and seeks intelligent solution. Anyone? Several reliable contractors are stumped. Thank you! _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
