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Thread: pex size

  1. #1
    Join Date
    May 2010
    Posts
    1

    Default pex size

    what size PEX should i use 1/2 or 3/4 to replace 3/4 copper that replaced 1/2 galvanized the copper is fairly new 11yrs? but is laying on the ground and there is still 1/2 galvanized going to all fixtures i want to replace this hodgepodge with PEX but am baffled by what size to use

  2. #2
    Join Date
    Aug 2008
    Location
    Midwest
    Posts
    179

    Default Re: pex size

    You need to give out more information. Pipe sizes are based on the number of fixtures they supply and the length of the run, etc. If anyone has some general rules of thumbs on this, I would like to hear them also. I always replace a 3/4" pipe with a 3/4" pipe no matter what the material (if there are no other problems). Never plumb a pipe to lay on the ground.
    "Lead by Example"

  3. #3
    Join Date
    Feb 2010
    Location
    South*East
    Posts
    1,220

    Default Re: pex size

    Run 3/4" mains and 1/2" branches to each fixture. Do not put two fixtures on 1/2".

    John

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