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-   -   Plastic copper connections (https://www.askmehelpdesk.com/showthread.php?t=161175)

  • Dec 10, 2007, 07:02 AM
    Ron Smith
    Plastic copper connections
    I have a copper plumbing system and want to join copper to cpvc what are my options?
    Are there addapters for 1/2 inch copper pipe to cpvc?
  • Dec 10, 2007, 07:05 AM
    ac101
    Where are the pipes located that you wish to join (attic,crawl space,etc.)
  • Dec 10, 2007, 07:28 AM
    Ron Smith
    Quote:

    Originally Posted by ac101
    where are the pipes located that you wish to join (attic,crawl space,etc.)

    Shower wall, I have just bought new system and was thinking the fittings would be the same being from Moen same as the old, but things change, and now I think the best way is to rip out the wall and just do the job right. There is just too much copper to pvc so if I leave line in, copper and just do the out lines in cpvc will that be OK?
    And thanks for your speedy response. Ron
  • Dec 10, 2007, 09:00 AM
    ballengerb1
    Both CPVC and copper have threaded male/female adapters. You need to solder the female adapter to the copper and glue/weld the male to the CPVC. Make sure you use purple primer on the CPVC and flux on the copper with lead free solder.
  • Dec 10, 2007, 10:58 AM
    labman
    If you are unsure about soldering, look at the Shark Bite fittings. See plumbing supplies, Ace hardware, and I just saw them at Home Depot or Lowe's. Just make a neat cut and slide the fitting over the pipe. Works on copper or anything the same diameter. Pricey.
  • Dec 10, 2007, 11:50 AM
    biggsie
    I worked as an instrument fitter during construction of a power plant

    I have also worked as a mechanic in an industrial plant

    There are many ways to join copper to pvc -- my answer is a union

    Put a male adapter on the copper tube --- put a male adapter on pvc

    Use the union to join them -- Unions are a plumbers friend

    It will make any repairs easier -- Separate union --do work --connect again

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