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  1. #1

    Default Hot Water Heater TP valve drain pipe

    Hi, This is Manzoor
    I have recently seen that in new homes they are using a flexible copper pipe in the drain line of the TP valve. I had always thought that this pipe has to be solid copper, steel or cpvc. Has any one else experieced this ? Is it code compliant to use flexible pipe?

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    Certified Master Inspector CMI

  2. #2
    Join Date
    Oct 2003
    Location
    Rockwall Texas
    Posts
    4,517

    Default Re: Hot Water Heater TP valve drain pipe

    Those flex type copper lines are reduced and not 3/4in. inside diameter as required.

    Therefore they are not acceptable.

    Rick


  3. #3
    Join Date
    Mar 2007
    Location
    Healdsburg, CA
    Posts
    1,741

    Default Re: Hot Water Heater TP valve drain pipe

    Ditto Rick. Refer IRC 2006 P2803.1(3)

    Jerry McCarthy
    Building Code/ Construction Consultant

  4. #4

    Default Re: Hot Water Heater TP valve drain pipe

    Thank you for pointing out the reduction in the diameter of the pipe.I am surprised that the code inspectors don't consider this a problem.


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