Sweating Copper - Torch

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by paperbag3, Oct 28, 2008.

  1. paperbag3

    paperbag3 New Member

    Oct 11, 2008
    Is there a particular type of torch that anyone prefers when sweating copper joints?

    Any other considerations or preferences anyone has re: equipment when doing this type of job?
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    It somewhat depends on how often you are going to do it and the size of the pipe you are soldering. Propane is cheap but doesn't heat as fast or get as hot as other options. It works okay for smaller pipe. MAPP gas gets hotter and you can finish faster. This also means the heat may not migrate as far since you'll have the joint done sooner and remove the heat source. Acetylene gets hottest of the generally used, but tanks and torch will cost more. Overheating a joint is probably more common with propane since it can take such a long time to get the whole thing up to temp...parts can get too hot while waiting for the rest to heat up. A lot of this is technique.

    Last edited by a moderator: Jun 20, 2010
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  4. Southern Man

    Southern Man DIY Hillbilly

    Jun 27, 2008
    North Carolina
    For a typical DIYer sweating 1/2" and 3/4" pipe a hand held propane with an electronic lighter in the trigger can be had for about $20 and will outlive you take reasonable care of it.
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