In my case the water on the floor and in the bucket is an indication of a seat problem not an environment problem like Cl or salt.
I appreciate the ideas and feedback. I'll be out there later this week to get a better sense of the scope of the problem. Chris Sent from my Verizon Wireless BlackBerry -----Original Message----- From: "Greg McGahan" <[email protected]> Date: Wed, 2 Dec 2009 08:47:51 To: <[email protected]> Subject: RE: O-rings/leaking seat If it is green, that is common in this area and is not an indication of a leak but of corrosion due to one of many possible environmental factors, humidity, salt or other elements/chemicals in the air etc. Incidentally though, we are having issues with Viking heads corroding prematurely. Greg McGahan Operations Manager Living Water Fire Protection 1160 McKenzie Road P.O. Box 877 Cantonment, Florida 32533 (850) 937.1850 | Fax (850) 937.1852 | Cell (850) 554.3231 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ron Greenman Sent: Tuesday, December 01, 2009 11:42 AM To: [email protected]; [email protected] Subject: Re: O-rings/leaking seat I think the statistic is 1:16m heads leak. Could be 13m. So yes, It's possible and has occurred often enough that there is a statistic. Usual culprit is fitters banging heads around in a bucket and the result might not show up for years. On Tue, Dec 1, 2009 at 8:54 AM, <[email protected]> wrote: > 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. > Sent from my Verizon Wireless BlackBerry > > -----Original Message----- > From: "Thom McMahon" <[email protected]> > Date: Tue, 1 Dec 2009 09:13:02 > To: <[email protected]> > Subject: RE: O-rings/leaking seat > > Just a comment, and I haven't been following this thread that closely, but > didn't you say green "Rust", which would indicate corrosion of the brass > seat to me. Just a thought. > > 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 David de > Vries > Sent: Monday, November 30, 2009 8:30 PM > To: [email protected] > Subject: Re: O-rings/leaking seat > > Chris: > > I believe Ron is right that Viking never made sprinklers with O-ring seals > in the waterway. When they started making glass bulb, QR sprinklers, they > went with the Belleville spring seal, which was the type of seal that > replaced the O-ring seal in the Central sprinklers. The oldest of their 8 > mm bulb sprinklers that I have on my desk is 1988 and it also has the BV > seal. > > Could your sprinkler have been exposed to freezing temps? I have seen > sprinklers with BV seals that were frozen, the seal displaced, and then > dribbled when the thaw happened. The seal is a thin piece of Mylar (or > generic equivalent, I believe) and it bulges out away from the spring. > > There are other mfrs that made O-ring sealed waterways. Go to UL's website > and look around, or contact me off forum. To my knowledge only Central and > a limited number of Gem and Star sprinklers were recalled due to O-ring > problems. > > Dave > > David A. de Vries, P.E., CSP > Firetech Engineering Incorporated > > > > > --- On Mon, 11/30/09, Chris Cahill <[email protected]> wrote: > > > From: Chris Cahill <[email protected]> > Subject: O-rings/leaking seat > To: [email protected] > Date: Monday, November 30, 2009, 11:20 AM > > > We've only been following the issue a little bit. I know about the recall > on Central heads so that's not the question. The question is - are there > other brands that are "rusting" and leaking from the seat? I've got a > Viking head from 1984 (might be a model XHH) that was leaking. It has a > flat cap much like the Central o-ring heads. It has a green "rust" line > around the seat. Is there other brands with o-ring, were they subject to > recall? Is the leaking caused by an o-ring, maybe I'm mixing two different > issues? > > > > Chris Cahill, P.E. > > Fire Protection Engineer > > Sentry Fire Protection, Inc. > > > > 763-658-4483 > > 763-658-4921 fax > > > > Email: [email protected] > > > > Mail: P.O. Box 69 > > Waverly, MN 55390 > > > > Location: 4439 Hwy 12 SW > > Waverly, MN 55390 > > > >_______________________________________________ > 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) > >_______________________________________________ > 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) > -- Ron Greenman Instructor Fire Protection Engineering Bates Technical College Tacoma, WA Member: SFPE, ASCET, NFPA, AFSA, NFSA AFAA, WSAFM _______________________________________________ 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) _______________________________________________ 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)
