Why not drain the water as it collects, instead of when someone opens the valve.
NC solenoid driven valve. 24VDC. 1/8"? Drive off 24v auxiliary power circuit, through NC relay contacts. Four wire cable pulled near, and past, all low point drains. One wire pair is intelligent circuit, controlled by FACP. Other is the 24VDC auxiliary power circuit, normally powered. Dropped at alarm. (Intelligent) relay control module connected to above four wire cable. Dry contacts on relay connected to solenoid. (If necessary add capacitive sub-circuit to power initial current spike at solenoid operation.) Provide programming option to direct all relay contact modules, and by inference, valves, in sequence. Five seconds each round? Five rounds/day? Skew towards warmest time of day in coldest month. Orifice, frequency, duration arrived at by experimentation and experience, or stronger powered engineering minds than mine. Orifice screened. Manual valve provided on horizontal connection on T. Use for initial gross draining of dry system. Blow water out it builds up, drip by drip. Never have enough to freeze and break fittings. Correct the problem instead of our colleague in Myrtle Beach ordering 60 x 1" valves each fall. Take the plant maintenance person out of the process. Best Bruce > On Dec 14, 2015, at 2:28 PM, Brad Casterline <[email protected]> wrote: > > Cut the problem in half by using half the valves, and none of those > fighting a losing battle by being closed? >> On Dec 14, 2015 4:21 PM, "Charles Thurston" <[email protected]> wrote: >> >> Hello Brad, >> >> We have enough trouble in this area getting the maint. guy to drain the >> ones with 2 valves they can reach and a hand tight plug in the bottom. IF >> we get 3 days below freezing and then a thaw, we will run 40-60 freeze >> break calls on the thaw day. >> >> That reminds me I need to place our annual order of 60- 1" valves. >> >> Monday, December 14, 2015, 3:43:29 PM, you wrote: >> >>> I still say we don't need two 1" globe valvles OR any 2" pipe to make a >>> Drum Drip. >>> How about a 1" globe at 7' AFF, then 6' of 1" down to a 1x1/2 red. with >> a >>> 1/2" fairly easily removed plug? >>> In this way, most would-be tamperers would need a ladder and wrench, and >>> honest workers could use the one valve and one plug to acomplish the same >>> thing the picture of drum drips in 13 do. >> >>> Brad >>> On Dec 14, 2015 10:40 AM, "Jay Stough" <[email protected]> wrote: >> >>>> AGF has a nice setup. We recently installed one of their heated drum >> drips >>>> where the installing contractor put the drum drip outside. Go to: >>>> http://www.testandrain.com/documents/products.html#collectandrain >> >>>> *Jay Stough* >>>> NICET IV LAYOUT >>>> NICET III ITM >> >>>> On Mon, Dec 14, 2015 at 10:37 AM, Gregory Lindholm <[email protected]> >>>> wrote: >> >>>>> Has anybody seen where I could get a guard that would keep people from >>>>> tampering with drain valves I has seen something quite a few years >> ago, >>>> but >>>>> cannot find out where now. >>>>> It does not matter if it attaches to the piping, then a lock >> installed on >>>>> that, or some type of cage attached to a wall, then a door on that. >>>>> >>>>> Greg Lindholm >>>>> _______________________________________________ >>>>> Sprinklerforum mailing list >>>>> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >>>> _______________________________________________ >>>> Sprinklerforum mailing list >>>> [email protected] >> >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> >> >> >> -- >> Best regards, >> Charles mailto:[email protected] >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
