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Thread: How do you stub out PEX?

  1. #1
    Join Date
    Oct 2006
    Location
    Minneapolis, MN
    Posts
    5,426

    How do you stub out PEX?

    My father wants to use PEX instead of copper to re-plumb a laundry room. What is the proper way to stub out PEX? You can put a 90 degree bend in the PEX, but I see lots of opinions that PEX used as a stub is not sturdy enough.

    I've seen special 90 degree copper bends with the crimped connection in the wall. Isn't it against code to put a crimped type connection in a wall? This would seem to be the way to go if it is legal.

  2. #2
    In my plumbing business I use the copper stub out elbows. It is not against code to have a fitting connection in the wall.

  3. #3
    Join Date
    Oct 2006
    Location
    Minneapolis, MN
    Posts
    5,426
    Does a crimped fitting require an access panel when placed in a wall?

  4. #4
    No, you can install all the joints you want. You should check them under pressure before they are covered.

  5. #5
    Join Date
    Sep 2007
    Location
    Fort Collins, Colorado
    Posts
    447
    I re-plumbed my town house with Uponor Pex and had really good luck with it. They have all the boxes, elbows and connections to make everything easy.

    I got all my stuff from pexsupply.com

    I am going to finish my basement in my new house and will use it again if I can figure out a safe way to transition from cpvc to pex.

  6. #6
    Join Date
    Apr 2005
    Location
    Central MA
    Posts
    1,584
    Quote Originally Posted by C Scott McDonald View Post
    ...if I can figure out a safe way to transition from cpvc to pex.
    Just glue a female adaptor on the cpvc and get a male threaded pex fitting. Thread the adaptors together with teflon tape and off you go.

  7. #7
    We usually use shark bite connectors to transition from cpvc to pex. You have to be careful if you use a female adapter on cpvc. Use a female adapter with the rubber seal if you go that route, without the rubber the hot connection will be leaking in no time.

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