Since heads are tested to 500PSI, I would think more likely Mis-handling of heads, It wasn't 25 years ago when MFG's finally came out and said you had to handle heads in " this manner only" or they may leak. The Green "Rust" still makes me think Atmospheric conditions like heads in pool mech. rooms or pools. We've seen this in shower rooms too. Or at the sea shore, as far as several miles inland.
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 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ed Kramer Sent: Tuesday, December 01, 2009 10:46 AM To: [email protected]; [email protected] Subject: RE: O-rings/leaking seat Any indications the system pressure may have exceeded 175? We've seen older antifreeze systems with pressures over 300 (the gauges were pegged) - no expansion tanks, no pressure relief valves. The sprinks weeped at the seats just as you've described. They were lucky they didn't have a full blow-out. Ed Kramer Littleton, CO > > Exactly. Bulb is intact. No chance of freezing. No chance of being hit. > With the rust it's been going on a while. Fitter didn't look at other > heads. We've not seen this much. Thought it was related to Central > and o-rings only. Has anyone else had experience with non-o-ring and > non- Central heads weeping and rusting? These are 25 yo Viking. > _______________________________________________ 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) _______________________________________________ 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)
