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  1. #1
    Join Date
    Mar 2007
    Location
    Charleston, WV
    Posts
    77

    Default TPR Discharge pipe reduction

    I came across this water tank today. When I looked at the tpr valve I snapped a picture and moved on just thinking it was incorrect. Now when I look at the picture, I don't see a reduction fitting at the top of the tank. I have never seen a 1/2 inch fitting (in the body of the tank) for a tpr valve. I see a reduction in pipe size after the valve quite often but I have never seen a reduction between the tank and the valve. Am I missing something?

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  2. #2
    Join Date
    Mar 2007
    Location
    Santa Rosa, CA
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    2,285

    Default Re: TPR Discharge pipe reduction

    I would agree with Fritz. Could that be where the sacrificial anode rod goes?

    Department of Redundancy Department
    http://www.FullCircleInspect.com/

  3. #3
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
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    25,307

    Default Re: TPR Discharge pipe reduction

    Quote Originally Posted by Gunnar Alquist View Post
    I would agree with Fritz. Could that be where the sacrificial anode rod goes?
    That's what I'm thinking too, and that this particular water heater is like some I've side, side T&P *only*, no top opening for the T&P (most tanks with a side T&P opening have that as an "alternate" opening, with the preferred location being in the top of the tank, but, I've seen a couple of tanks in the past which *only had* the side opening for the T&P).

    Of course, if that is for the anode rod, that tank is probably gone now any way.

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

  4. #4
    Join Date
    Mar 2007
    Location
    Charleston, WV
    Posts
    77

    Default Re: TPR Discharge pipe reduction

    Good call. I now know to look elsewhere on the tank for another fitting. You learn something everyday in this business.

    Greg Jenkins

  5. #5
    Join Date
    Mar 2007
    Location
    Spring Hill (Nashville), TN
    Posts
    5,829

    Default Re: TPR Discharge pipe reduction

    How old is that tank? I haven't seen that Harvest Gold color in ages!

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  6. #6
    Join Date
    Mar 2007
    Location
    Spring City/Surrounding Philadelphia area
    Posts
    3,471

    Default Re: TPR Discharge pipe reduction

    Interesting call on the color Scott. I was thinking Gulden's Mustard.


  7. #7
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,307

    Default Re: TPR Discharge pipe reduction

    Quote Originally Posted by Scott Patterson View Post
    How old is that tank? I haven't seen that Harvest Gold color in ages!
    1960s to 1970s.

    Back when you wanted your water heater to match the clothes washer and clothes dryer next to it ... until you replaced them with white appliances ...

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

  8. #8
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,280

    Default Re: TPR Discharge pipe reduction

    It looks like a modern 3/4 inch valve in an older tank with a 1/2 inch opening.


  9. #9
    Join Date
    Mar 2007
    Location
    Hudson, WI
    Posts
    645

    Default Re: TPR Discharge pipe reduction

    Temp probe may be too short to be effective as well. From the Watts site:

    "Alternate" ONLY when the tappings are not provided:
    Use standard or extra length extension thermostat which permits the end of the thermostat to extend into the top 6" of the tank.


    For Heaters with Direct Top Tapping:
    Always use an extension type thermostat T&P relief valve which permits the end of the thermostat to extend into the top 6" of the tank.



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