I have one of those pumps kicking around somewhere, as well as the pressure switch and the semaphore sending unit. As far as I know the clockworks semaphore boxes are still being used in the world famous Pike Place Market where disrespectful fishmongers actually toss dead fish for public entertainment. Obviously on a par with cock fighting, bear baiting & dog fighting.
On Mon, Jun 29, 2009 at 6:25 AM, Charles Thurston<[email protected]> wrote: > Hello George, > > That was what the ADT (FTW/DLS) office I was in put in for the waterflow > switch also. > > Monday, June 29, 2009, 7:54:47 AM, you wrote: > >> If you had a jockey pump and I'll assume a fire pump, why would you need an >> excess pressure pump? >> glc > >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Coastal >> Sent: Monday, June 29, 2009 6:49 AM >> To: [email protected] >> Subject: Re[2]: mercoid switch on wet riser > >> Hello bverhei, > >> So I am not the only one that remembers the old ADT 6121. When I started >> with them back in 1978 they were on 99% of the Wet risers. Had to be careful >> with the setup on em as it was easy to exceed the rating of fittings when >> you were downstream of a Jockey pump. > >> Sunday, June 28, 2009, 8:09:43 PM, you wrote: > >>> Excess pressure pump. The definitive solution where someone in the range >> of AHJ's takes >>> stopping false alarms due to pressure surges. I do mean stopping, not >> reducing. Required >>> in Vancouver (and the rest of B.C.?). Seems New Zealand is on the list. > >>> Can be done without the Gamewell (ADT?) unit. Not required to be listed >> for fire >>> protection service, unless unit also act as the switch for the fire alarm >> system interface. > >>> Yours, > >>> Bruce Verhei > >>> ----- Original Message ----- >>> From: "Tom Duross" <[email protected]> >>> To: [email protected] >>> Sent: Sunday, June 28, 2009 7:51:04 AM GMT -08:00 US/Canada Pacific >>> Subject: RE: mercoid switch on wet riser > >>> What Todd said. They probably replaced the original compound type with a >>> mercury one. >>>>From what I know, Gamewell isn't making them anymore. I think they ceased >>> last summer, I drove out to get a diff. switch and they told me. >>> Just as an aside, my grandfather is on the patent for this and a few other > >>> things Gamewell made before and after the depression when they were in >>> Newton, MA. I have a beautiful one I "kept" in my basement along with a >>> couple of those McCullough type switches I posted about last summer too in > >>> really nice shape. >>> Of course, nothing official but my Dad has a picture of him and the crew >>> taken in the shop after another patent was awarded. Funny coincidence. :) > >>> TD >>> Go Red Sox! > >>> The old Gamewell excess pressure pumps had a very homemade look about >> them. >>> And that sounds like what is being described. Used to be required in >> Canada >>> and parts of Europe don't know if they still are.. > >>> Richard > > >>> Sounds like an excess pressure pump. These were used in areas with a >>> lot of pressure fluctuations to prevent false alarms. This was before >>> flow switches with delays. Gamewell was famous for these but >>> Firematic made a fairly simple version of the same thing. Some towns >>> (at least in this part of the world) required them > > > >>> At 11:38 AM 6/27/2009, you wrote: >>>>I saw something which I do not understand and hope someone can explain >>>>this to me. >>>>A 35 year old wet system, manifold with 2 alarm valves. There is a >>>>electric flow switch on each riser, I think added recently. >>>>The valves were trimmed with the normal motor gongs, etc. >>>>The system side gauges are piped together between the two risers, with >>>>check valves, a mercoid switch labeled pump switch, and another mecoid >>>>switch labeled alarm switch. On this piping there are 3 check valves >>>>and a small test cock, presumably for testing. >>>>There is a small pump with 1/2 in inlet from supply side of valve 2, >>>>which discharges into the pressure gauge piping described above. >>>> >>>>What is the purpose of this? Was it standard at one time? >>>> > >>> _______________________________________________ >>> Sprinklerforum mailing list >>> http://lists.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 >>> http://lists.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) > > > > > > > -- > Best regards, > Charles Thurston mailto:[email protected] > Coastal Fire Protection > > _______________________________________________ > Sprinklerforum mailing list > http://lists.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 _______________________________________________ Sprinklerforum mailing list http://lists.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)
