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  1. #1
    mathew stouffer's Avatar
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    Default Water heater TPR valve

    Does the discharge tube on a TPR valve have to be PVC or copper. I am not sure what type of material this was, almost like garden hose. I could not find a rating.

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  2. #2
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    Default Re: Water heater TPR valve

    Quote Originally Posted by mathew stouffer View Post
    I am not sure what type of material this was, almost like garden hose. I could not find a rating.

    Not almost like... that is a garden hose. No, it's not rated, and since GE water heaters are exclusive to Home Depot, the whole install is likely DIY.

    Dom.

    Last edited by Dom D'Agostino; 04-02-2010 at 11:48 AM. Reason: spelling...

  3. #3
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    Default Re: Water heater TPR valve

    P2803.6.1 Requirements for discharge pipe.
    The discharge
    piping serving a pressure-relief valve, temperaturerelief
    valve or combination valve shall:
    13. Be constructed of those materials listed in Section
    P2904.5 or materials tested, rated and approved for

    such use in accordance with ASME A112.4.1.

    TABLE P2904.5
    WATER DISTRIBUTION PIPE
    MATERIAL STANDARD
    Brass pipe ASTM B 43
    Chlorinated polyvinyl chloride (CPVC) plastic pipe and tubing ASTM D 2846; ASTM F 441; ASTM F 442; CSA B137.6
    Copper or copper-alloy pipe ASTM B 42; ASTM B 302
    Copper or copper-alloy tubing (Type K, WK, L, WL, M or WM) ASTM B 75; ASTM B 88; ASTM B 251; ASTM B 447
    Cross-linked polyethylene (PEX) plastic tubing ASTM F 877; CSA B137.5
    Cross-linked polyethylene/aluminum/cross-linked polyethylene
    (PEX-AL-PEX) pipe ASTM F 1281; CSACAN/CSA-B137.10
    Cross-linked polyethylene/aluminum/high-density polyethylene
    (PEX-AL-HDPE) ASTM F 1986
    Galvanized steel pipe ASTM A 53
    Polybutylene (PB) plastic pipe and tubing ASTM D 3309; CSA CAN3-B137.8
    Polyethylene/aluminum/polyethylene (PE-AL-PE) composite pipe ASTM F 1282
    Polypropylene (PP) plastic pipe or tubing ASTM F 2389; CSA B137.11
    Stainless steel (Type 304/304L) pipe ASTM A 312; ASTM A 778
    Stainless steel (Type 316/316L) pipe ASTM A 312; ASTM A 778


    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  4. #4
    Join Date
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    Default Re: Water heater TPR valve

    Insulation on the hot pipe is too close to the draft hood.
    The flue pipe doesn't look like it's secured to the draft hood.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  5. #5
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    Default Re: Water heater TPR valve

    Quote Originally Posted by mathew stouffer View Post
    Does the discharge tube on a TPR valve have to be PVC or copper. I am not sure what type of material this was, almost like garden hose. I could not find a rating.
    Just a note in addition to the other information given in the posts above ... "PVC" is not allowed for that use.

    I suspect you were meaning "CPVC"?

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  6. #6
    David Bell's Avatar
    David Bell Guest

    Default Re: Water heater TPR valve

    Quote Originally Posted by John Arnold View Post
    Insulation on the hot pipe is too close to the draft hood.
    The flue pipe doesn't look like it's secured to the draft hood.
    Check G E website for product manual, they allow insulated pipes down to the top of the heater



  7. #7
    David Bell's Avatar
    David Bell Guest

    Default Re: Water heater TPR valve

    The garden hose makes it much easier to get that pesky leak outside. Nevermind that the water pressure in the home is over 100 PSI and the heater is set at High. Just a guess.


  8. #8
    mathew stouffer's Avatar
    mathew stouffer Guest

    Default Re: Water heater TPR valve

    But the insulation is too close to the single wall vent.


  9. #9
    Ted Menelly's Avatar
    Ted Menelly Guest

    Default Re: Water heater TPR valve

    Quote Originally Posted by David Bell View Post
    The garden hose makes it much easier to get that pesky leak outside. Nevermind that the water pressure in the home is over 100 PSI and the heater is set at High. Just a guess.
    I inspected a home the other day that folks lived in. Both gas water heaters water temp was between 165 and 170

    Yes, I turned it down. Told the owners and they thought the water temp should be that high. They stated that many times they were just about scalded almost instantly .


  10. #10
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    Default Re: Water heater TPR valve

    "I inspected a home the other day that folks lived in. Both gas water heaters water temp was between 165 and 170"

    You do understand that the "T" in TPR stands for Temperature, and is set at 150 deg.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  11. #11
    Ted Menelly's Avatar
    Ted Menelly Guest

    Default Re: Water heater TPR valve

    Quote Originally Posted by Rick Cantrell View Post
    "I inspected a home the other day that folks lived in. Both gas water heaters water temp was between 165 and 170"

    You do understand that the "T" in TPR stands for Temperature, and is set at 150 deg.
    Ahhhh.......really?

    I did not write everything I got into with the owners. I just never completed what I was writing and what I went over with them. Got called away and hit send before leaving.


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