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Thread: What is the difference between type L and type M copper pipe

  1. #1
    DIY Junior Member Dom Z's Avatar
    Join Date
    Jul 2009
    Location
    Northern New Jersey
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    24

    Default What is the difference between type L and type M copper pipe

    I'm planning on replacing 1/2" supply lines with 3/4" supply lines for a shower remodel.

    I was wondering what's the difference between type L and type M copper pipe and what type is recommended for hot and cold water supplies?

    Would there be any benefit in using PAX vs Copper? I don't know if PAX can be used in NJ.

    Sorry for the fat fingering of the title, It should read "What's the difference between type L and type M"
    Last edited by Dom Z; 08-09-2009 at 09:19 AM.

  2. #2
    Illinois Licensed Plumber SewerRatz's Avatar
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    Nov 2008
    Location
    Chicago, IL
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    1,705

    Default

    It is the wall thickness. Most of the towns I work in want Type L copper.


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