Results 1 to 5 of 5

Thread: Copper Pipe Red or Blue

  1. #1
    ryandebny is offline Handyman
    Join Date
    Jan 2008
    Posts
    35
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Copper Pipe Red or Blue

    Can I use either red label or blue label copper pipe for my water line?

  2. #2
    HayZee518's Avatar
    HayZee518 is offline Deity
    Join Date
    Jul 2004
    Location
    Saint Regis Falls, NY, USA.
    Posts
    8,412
    Thanks
    1
    Thanked 460 Times in 447 Posts
    red or blue label??? All I've seen is type M or type L.

  3. #3
    LazyPup's Avatar
    LazyPup is offline Deity
    Join Date
    Apr 2004
    Location
    chicopee, Massachusetts
    Posts
    2,316
    Thanks
    0
    Thanked 29 Times in 28 Posts
    Although most people are not aware of the fact, They are correct in referring to copper pipe by color code. If you examine the writing on the pipe you will find that Type K (heavy wall) will have green writing, while Type L (Standard Wall) will have Blue writing and Type M (thinwall) will have Red writing.

    Both the International Residential code and Uniform Plumbing code approve all three types for both Supply & Distribution piping.

    By definition, "Supply" is the direct buried line from the municipal main or well source to the structure and "Distribution" is the piping within a structure.

    Under the UPC type M (thin wall) with Red writing may only be used for distribution piping only if it is above ground. (6" or higher above the slab or basement floor.)

    As a rule most plumbers use type L (standard wall with Blue writing) for both supply and distribution piping.

  4. #4
    ryandebny is offline Handyman
    Join Date
    Jan 2008
    Posts
    35
    Thanks
    0
    Thanked 0 Times in 0 Posts

    red blue

    thanks for the advice

  5. #5
    canoebuilder is offline Handyman
    Join Date
    Feb 2008
    Posts
    67
    Thanks
    0
    Thanked 0 Times in 0 Posts
    We, in our plumbing business, have always used "L" labeled with blue printing on all the pipe for all water lines above ground and "M" or red printing just for heat lines from a hot water boiler.
    "K" is used for underground pipeing for under slabs.
    Gerry

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •