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)
