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Posted by cz111 on August 5, 2008, 1:47 pm
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cz111 had written this in response to
http://www.thestuccocompany.com/hvac/Braze-or-solder-copper-refrigerant-lines-to-fittings-10462-.htm
:
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henny wrote:
> It seems like the two primary methods for connecting copper to copper
> refrigerant lines to fittings are either Sil Phos 15 brazing rod or
> Stay Brite silver solder.
> I've done gas welding and some plumbing soldering jobs but would only
> rate myself as a novice.
> Which method is easier for a novice to do reliably? (Sil Phos or
> Staybrite silver solder.)
> I plan to do lots of practice on scrap copper pipe and fittings until
> I'm proficient. I'd like to know which method is easier to learn and
> do reliably so I have a good starting point.
> For brazing copper lines (3/8 to 1-1/8" in diameter) what oxy/acet
> tip
> do you prefer to use. (small rosebud??) Will a Turbo Torch w/ #4
> tip and MAPP gas braze using Sil Phos 15? What about the Quick
> Braze?? Is it worth getting??
I was told by a heating and cooling repairman (who has lied to me more
than once) and his boss that torch brazing copper tubing does not require
the tubes to be cleaned or fluxed because the high temperature along with
a 'special silver soder' will eliminate all oxidization, oils, etc... Any
comments???
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Posted by Stormin Mormon on August 5, 2008, 7:44 pm
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The 15% silver braze sticks I bought years ago said they were "self
fluxing". But, I have never taken the chance that they might be mistaken.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
I was told by a heating and cooling repairman (who has lied to me more
than once) and his boss that torch brazing copper tubing does not require
the tubes to be cleaned or fluxed because the high temperature along with
a 'special silver soder' will eliminate all oxidization, oils, etc... Any
comments???
##-----------------------------------------------##
Delivered via http://www.thestuccocompany.com/
Building Construction and Maintenance Forum
Web and RSS access to your favorite newsgroup -
sci.engr.joining.welding,alt.hvac - messages and counting!
##-----------------------------------------------##
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Posted by Petre on August 6, 2008, 12:49 am
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Stormin Mormon wrote:
> The 15% silver braze sticks I bought years ago said they were "self
> fluxing". But, I have never taken the chance that they might be mistaken.
>
Whatttt?? You gotta be kidding. This is for copper brazed AC lines?
I do hope you ran some nitrogen through those lines. Dammit Steve, Your
Apprentice is running Amok.,
** Posted from http://www.teranews.com **
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Posted by KJPRO on August 6, 2008, 10:06 am
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> Stormin Mormon wrote:
>> The 15% silver braze sticks I bought years ago said they were "self
>> fluxing". But, I have never taken the chance that they might be mistaken.
>>
>
>
> Whatttt?? You gotta be kidding. This is for copper brazed AC lines?
> I do hope you ran some nitrogen through those lines. Dammit Steve, Your
> Apprentice is running Amok.,
Stormy doesn't own a N2 kit... remember, his Pinto can't haul much.
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Posted by Jman on August 6, 2008, 10:28 pm
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Holy Crap,
What's with all this talk about silver solder, stick solder, Oxy/ACE,
yadda, yadda....
That stuff is uh, nice, but certainly not neccessary for 'this' task.
- Score the pipes, fittings outside / inside with steel wool, clean
em' off with a dry 'clean rag'.
- Fit together parts/joints, flux with water base (non-Acid) flux
- Turn on the $10.00 propane torch, heat the joints until the flux
discolors , wet the seams really nice with 95/5 solder.
Bob's your uncle....
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> refrigerant lines to fittings are either Sil Phos 15 brazing rod or
> Stay Brite silver solder.