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Thread: Copper pipe

  1. #1
    Join Date
    Nov 2009
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    Default Copper pipe

    What type of copper tubing is better for a house with well water Type L or Type M.

  2. #2
    Join Date
    Feb 2010
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    Default Re: Copper pipe

    Type L is better. Way back when, it was required by most building codes. Still is in some areas. Type M was used on heat. If cost is not a problem I would go with L.

    John

  3. #3
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    Jan 2010
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    Default Re: Copper pipe

    Type L is fully adequate for domestic water supply. For heat supplies, I would want to use type K, which has wall thicknesses typically 20% greater. Type M is thin-wall, and is for flare-type connections, AFAIK.
    S_M
    Remove not the ancient landmark, which your fathers have set.

  4. #4
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    Default Re: Copper pipe

    Quote Originally Posted by Sombreuil_mongrel View Post
    Type L is fully adequate for domestic water supply. For heat supplies, I would want to use type K, which has wall thicknesses typically 20% greater. Type M is thin-wall, and is for flare-type connections, AFAIK.
    S_M
    You have it backwards. Type K is typically used for under ground. If you tried to flare type M it would split the pipe. Type M is used on heat as you are only working with 12 to 15 lbs.

    John

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