12:35PM | 11/23/03
Member Since: 04/20/03
75 lifetime posts
Hi: i was trying to install a new ball valve on my incoming cold water line. I drained the line, sandpapered the copper pipe & inside of valve fitting, applied flux etc.. But when I went to heat the joint with my gas torch to apply solder, the joint simply would not heat up enough to get the solder to melt and go into the joint. I am using the standard plumbing torches available for DIYs at home depot. I have the feeling the heat is simply being dissipated away in the copper pipe so the joint never heats up enough. Is there any trick I can use, or is it possible to buy a hotter propane torch etc.. I am sure plumbers solder stuff onto existing lines. what is the trick to getting the joint hot enough? thanks.


12:42PM | 11/23/03
Member Since: 06/06/03
1250 lifetime posts
Water in the pipe will cause this problem. Try putting a wad of white bread into the pipe to hold back the drops temporarily....good luck.

plumber Tom

12:56PM | 11/23/03
Member Since: 05/10/03
810 lifetime posts
Try MAPP gas. It's color coded and you look for the disposable yellow canisters. Mapp burns slightly hotter then propane, but not as hot as acetylene. When you heat the joint, make sure you apply the tip of the blue flame to the valve, NOT the pipe. Good LUck.


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