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-   -   Sweating a brass fitting to a copper pipe (http://www.diychatroom.com/f7/sweating-brass-fitting-copper-pipe-49282/)

jgs1951 07-20-2009 01:42 PM

Sweating a brass fitting to a copper pipe
 
When sweating a brass fitting to a copper pipe, how do you when to
remove the torch and apply the solder?

Termite 07-20-2009 01:47 PM

Brass takes more heat. A common mistake is to overheat to the point that your flux melts away. Use good thick flux or you'll fight it...The black stuff that comes in the little snuff cans will cause you headaches a lot of the time.

I heat my fittings and touch the solder to the OPPOSITE side of the fitting as the flame...When the solder melts and sucks in you know you've got it and can pull the heat off. Remember that the solder is drawn toward the flame so you shouldn't apply the solder where the flame is held.

jgs1951 07-21-2009 10:02 AM

Thanks thekctermite, Very helpful reply.

cochise7969 07-21-2009 05:00 PM

I just did this in my office, I had to remove a coupler and insert a T to provide water in the warehouse for the swap cooler, just make sure you heat the pipe enough so the solder stick instead of run off.

jgs1951 07-21-2009 06:39 PM

Thanks for the help cochise7969

wrangler 07-21-2009 07:40 PM

And just a clarification, when soldering brass to copper, apply the heat to the brass first. The copper heats faster than brass.

jgs1951 07-21-2009 07:56 PM

Thanks wrangler for a valuable tip

Gerry Hendry 09-26-2011 06:31 PM

Exactly what flux and what solder are we talking about.?I have the problem with a toilet drain.

Alan 09-26-2011 09:06 PM

Quote:

Originally Posted by Gerry Hendry (Post 736550)
Exactly what flux and what solder are we talking about.?I have the problem with a toilet drain.

You are probably not getting it hot enough. You might need oxy-acetylene to get it hot enough. A regular can of propane and a cheesy torch head aint going to do it.


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