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

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by Dom Z, Aug 9, 2009.

  1. Dom Z

    Dom Z New Member

    Messages:
    24
    Location:
    Northern New Jersey
    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: Aug 9, 2009
  2. SewerRatz

    SewerRatz Illinois Licensed Plumber

    Messages:
    1,706
    Location:
    Chicago, IL
    It is the wall thickness. Most of the towns I work in want Type L copper.

    [​IMG]
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