Be sure to check the air water solenoid on these valves, we have had issues with these. They do not operate like a typical dry pipe. There was also a recal that applied to certain pin assemblies on the check!
Regards, Jamey On 2012-10-25, at 12:15 PM, "Gregg Key" <[email protected]> wrote: > Very good feedback. This system was installed in 2006 and is a Victaulic > dpv. We have none of the original acceptance test paperwork but would make > an assumption that it would have passed then. It appears to be a small > system. Mike ,you are right about the by-pass line as it appears that there > is not one installed. Air Compressor is in a hidden crawl space below the > floor. My thought was that something has restricted the air release in the > inspectors test but have not taken it apart. Thanks for everyones help > > C.Gregg Key, SET > Key Fire Protection Services,Inc > Project Manager > (O) 706-790-3473 > (C) 706-220-8821 > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Mike Cabral > Sent: Thursday, October 25, 2012 10:40 AM > To: [email protected] > Cc: [email protected] > Subject: Re: trip time per nfpa 25 > > I would check to make sure that the air supply to the DPV is working as it > should. The time to trip should never be that long. Is the by-pass open? > Sounds like the make-up air is supplying to much air. The make up air needs > to be restricted. The supply line to the Inspectors Test can be larger than > 1" it can't be less than 1" however the standard does no say it can't be > larger than 1". > > Sent from my iPhone > > On Oct 24, 2012, at 1:13 PM, Todd Letterman <[email protected]> wrote: > >> It is also not going to trip or be severely delayed if there is a water > column occurrence holding the clapper shut. >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Ron >> Greenman >> Sent: Wednesday, October 24, 2012 11:06 AM >> To: [email protected] >> Subject: Re: trip time per nfpa 25 >> >> I don't believe their is any reference to "how long is too long" >> except in >> 13 (pre 2010) where a system of between 500 & 750 gallons is required to > have a QOD if the water delivery time to the inspectors test exceeds 60 > seconds. I think there is a presumption that a system of less than 500 > gallons will trip in a "timely" manner, that over 750 gallons won't without > a QOD, and that in between one is questionable. From there the one minute > trip time came to be the conventional standard, although the book only > referred to water delivery time after the trip occurred. In the 2010 edition > times are specified. See section 7.2.3.6 Dry Pipe System Water Delivery. > Although entitled as "water delivery time" it tells you that the delivery > time countdown starts at normal air pressure which suggests pre-trip, tto > the actual trip, and finishing with water at the test port. >> >> On Wed, Oct 24, 2012 at 10:27 AM, Gregg Key <[email protected]> wrote: >> >>> Our inspector ask an interesting question today. How long is too long >>> of a time for a dry valve to trip before it is considered a >>> deficiency? 25 does not specify but 15 min seams too long. Don't have >>> the previous report to compare it to. >>> >>> C.Gregg Key, SET >>> Key Fire Protection Services,Inc >>> Project Manager >>> (O) 706-790-3473 >>> (C) 706-220-8821 >>> >>> >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected] >>> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> >> >> >> -- >> Ron Greenman >> Instructor >> Fire Protection Engineering Technology Bates Technical College >> 1101 So. Yakima Ave. >> Tacoma, WA 98405 >> >> [email protected] >> >> http://www.bates.ctc.edu/fireprotection/ >> >> 253.680.7346 >> 253.576.9700 (cell) >> >> Member: >> ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC >> >> They are happy men whose natures sort with their vocations. -Francis >> Bacon, essayist, philosopher, and statesman (1561-1626) >> -------------- next part -------------- An HTML attachment was >> scrubbed... >> URL: >> <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/atta >> chments/20121024/57fe47b6/attachment.html> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
