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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

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    • #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.
              "When we build let us think we build forever. Let it not be for present delight nor for present use alone. Let it be such work that our descendants will thank us for, and let us think, as we lay stone upon stone, that a time is to come when these stones will be held sacred because our hands have touched them, and that men will say, as they look upon the labor and wrought substance of them, "See! This our fathers did for us."
              John Ruskin (1819 - 1900)

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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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