would definitely rule out the air maintenance device, DPV trim, drum drips, quick opening device and all that, if you haven't already done so.
On Fri, Jul 16, 2010 at 8:25 PM, max brown <[email protected]>wrote: > > Have used high air pressures to add the advantage of hearing the leak Also > have used the AQUA VELVA in compressor hose. Works as well as Ahmani but > cheaper. lol. Have had some sucess with both methods. Might try the high > tech Helium leak detector practice by professional leak detection company > but the air circulating , I assume complicates any method. Don't know of a > reasonably priced liquid that freezes below -40; look for the drip. Maybe on > a Periodic Chemical chart there is an Element that would not freeze? > > > Date: Fri, 16 Jul 2010 12:36:46 -0700 > > Subject: Re: Finding leaks in a dry pipe system > > From: [email protected] > > To: [email protected] > > > > Cold smoke like soldiers use for signaling. Pop a unit in the DPV, > > close it up, and then pressure it. > > > > On Fri, Jul 16, 2010 at 11:28 AM, David Bitton > > <[email protected]> wrote: > > > Thank you everyone for your replies. We are still trying to find a way > to > > > locate the leaks without tripping the system and/or putting the freezer > out > > > of service. (The aroma therapy sure is tempting...) If that turns out > not > > > to be possible, we will explore the other methods. > > > > > > -----Original Message----- > > > From: [email protected] > > > [mailto:[email protected]] On Behalf Of Ben > Young > > > Sent: Friday, July 16, 2010 2:00 PM > > > To: [email protected] > > > Subject: Re: Finding leaks in a dry pipe system > > > > > > Frank Herrick gave a good way to find dry system leaks back in March, > > > actually. > > > > > > > http://www.mail-archive.com/[email protected]/msg19989.html > > > > > > > > > Benjamin Young > > > > > > > > > > > > On Fri, Jul 16, 2010 at 1:26 PM, David Bitton > > > <[email protected]>wrote: > > > > > >> Yes, with the normal operating temperature at -4oF. With regards to > the > > >> ultrasonic leak detectors, those that I have seen are limited to > operating > > >> temperatures above freezing. > > >> > > >> -----Original Message----- > > >> From: [email protected] [mailto: > > >> [email protected]] On Behalf Of > > >> [email protected] > > >> Sent: Friday, July 16, 2010 1:11 PM > > >> To: [email protected] > > >> Subject: Re: Finding leaks in a dry pipe system > > >> > > >> Is the freezer in service? > > >> > > >> LV > > >> > > >> > > >> ---- tom poisal <[email protected]> wrote: > > >> > Buckets of soapy water and soft bush with plenty of helpers to go > over > > >> > every fitting, joint and weld. > > >> > > > >> > On Fri, Jul 16, 2010 at 12:18 PM, Matt Grise <[email protected]> > wrote: > > >> > > > >> > > There are leak detectors available that can detect the sound of > air > > >> leaking > > >> > > from pipes. They can often do better than ears. > > >> > > > > >> > > Matt Grisé PE*, LEED AP > > >> > > Sales Engineer > > >> > > Alliance Fire Protection > > >> > > *Licensed in KS & MO > > >> > > > > >> > > 913.888.0647 ph > > >> > > 913.888.0618 f > > >> > > 913.927.0222 cell > > >> > > www. AFPsprink.com > > >> > > > > >> > > -----Original Message----- > > >> > > From: [email protected] [mailto: > > >> > > [email protected]] On Behalf Of David > Bitton > > >> > > Sent: Friday, July 16, 2010 11:12 AM > > >> > > To: [email protected] > > >> > > Subject: Finding leaks in a dry pipe system > > >> > > > > >> > > Hello, > > >> > > > > >> > > > > >> > > > > >> > > I have a large cold storage freezer facility that is protected by > > >> several > > >> > > dry pipe systems. The systems are currently shut off due to > several > > >> leaks. > > >> > > A contractor used compressed air to pressurize the piping and find > > >> leaks, > > >> > > which he has repaired (mostly coming from the grooved > connections). > > >> > > However, there are additional leaks which has not been able to > find. > > >> Is > > >> > > anyone aware of other methods of finding the leaks (other than > > >> compressed > > >> > > air)? > > >> > > > > >> > > > > >> > > > > >> > > Thanks, > > >> > > > > >> > > > > >> > > > > >> > > David Bitton, ing. > > >> > > > > >> > > Quest Loss Control Services Inc. > > >> > > > > >> > > Les services de prévention des sinistres Quest inc. > > >> > > > > >> > > 5100, rue de la Savane, bureau 200 > > >> > > > > >> > > Montréal, QC H4P 1T8 > > >> > > > > >> > > (514) 341-4545 > > >> > > > > >> > > www.questlosscontrol.com > > >> > > > > >> > > > > >> > > > > >> > > _______________________________________________ > > >> > > 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]<to%[email protected]> > <to%3asprinklerforum-requ...@fire > > > sprinkler.org> > > >> > > > <to%[email protected]<to%[email protected]> > <to%253ASprinklerforum-request > > > @firesprinkler.org> > > >> > > > >> > > (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]<to%[email protected]> > <to%3asprinklerforum-requ...@fire > > > sprinkler.org> > > >> 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to:[email protected]<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]<to%[email protected]> > > > (Put the word unsubscribe in the subject field) > > > > > > > > > > > -- > > Ron Greenman > > Instructor > > Fire Protection Engineering > > Bates Technical College > > Tacoma, WA > > > > Member: > > AFT WA 4184/AFL-CIO, SFPE, ASCET, NFPA, AFSA, NFSA AFAA, NIBS, WSAFM, WFC > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > For Technical Assistance, send an email to: [email protected] > > > > To Unsubscribe, 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