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T/P piping

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  • T/P piping

    I am installing a water heater in the basement of a house. It will be inspected by the local authority. Do I need to run my T/P like a drain (downhill the whole way), or can I run it uphill.

    I am assuming that PVC will be usable for this application.

    Thanks for any advise you can give, I am ignant of most Plumbing rules.

  • #2
    Re: T/P piping

    I say no to PVC: copper or CPVC

    Comment


    • #3
      Re: T/P piping

      Originally posted by Jon Doelman View Post
      I am installing a water heater in the basement of a house. It will be inspected by the local authority. Do I need to run my T/P like a drain (downhill the whole way), or can I run it uphill.

      I am assuming that PVC will be usable for this application.

      Thanks for any advise you can give, I am ignant of most Plumbing rules.
      The discharge must have a constant downward slope. It cannot be restricted and the discharge end cannot be threaded. Pvc is NOT an option. Call the inspector and get some tips if he is willing to help you.

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      • #4
        Re: T/P piping

        IPC and UPC both allow PVC to be used for relief valve piping
        sigpic

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        • #5
          Re: T/P piping

          I would check with your local inspector about pipe, some cities i work in require copper

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          • #6
            Re: T/P piping

            i would check to see if you even have to run it to a drain we dont have to
            Charlie

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            • #7
              Re: T/P piping

              He didn't mention piping to a drain, he asked "like a drain" which I take to mean does he need to pitch the pipe away from the T&P valve.
              ---------------
              Light is faster than sound. That's why some people seem really bright until you hear them speak.
              ---------------
              “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
              ---------
              "Its a table saw.... Do you know where your fingers are?"
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              • #8
                Re: T/P piping

                It must slope continuously downward. Otherwise, condenataion and drips WILL cause the belly area to fill up, and very possibly back up to the TP, causing deposits and other wise affecting proper operation of the mechanism.

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                • #9
                  Re: T/P piping

                  If the waterheater is anywhere near the floor drain at all then just run the pipe down the waterheater and leave it about an inch short of the floor. All of the areas i work in allow for this unless the water heater is on a 2nd floor.

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