Results 1 to 12 of 12
  1. #1

    Default What is the likelihood?

    What is the likelihood that galvanic action would occur in this spot? It seems to me that calling this out is a little on the picky side, but what would be the fix?

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Inspection Referral SOC

  2. #2
    Join Date
    Sep 2008
    Location
    Texas
    Posts
    745

    Default Re: What is the likelihood?

    Won't be a problem. The copper is isolated from the steel.

    I would be more concerned with the flue pipe. It's not even close to compliant. Flex is not an allowed type B vent.


  3. #3

    Default Re: What is the likelihood?

    So is the copper isolated because of the PVC? If you could give me a little more info on why it's isolated that would be helpful.

    The flex pipe is a Dura-vent pipe and is rated for this use (Simpson Dura-vent), but that really wasn't the question.


  4. #4
    Join Date
    Sep 2008
    Location
    Texas
    Posts
    745

    Default Re: What is the likelihood?

    Because of the copper flex commectors have a plastic/nylon bushing that prevents any contact of the copper to steel.

    If you look at your picture, on top of the brass nut, you can see the bushing protruding above the nut. The bushing is inside the nut and flares out so that there is no contact inside of copper to steel. The whole thing is totally isolated.

    Make sense?


    Is there a copper bushing between the CPVC and and steel T? If so, no it's not isolated. They should have used either a steel or CPVC bushing.

    Last edited by Wayne Carlisle; 02-09-2009 at 10:59 AM. Reason: Added last part and corrected spelling

  5. #5

    Default Re: What is the likelihood?

    So I understand the flex pipe and should have been more specific... my question is in reference to the bushing at the CPVC. It is a Copper male fitting with the CPVC on the other side. The Copper male fitting connects to the Galvanized female just above the water heater.


  6. #6
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,984

    Default Re: What is the likelihood?

    The nylon bushing isolates the copper from the brass which is in contact with the galvanized.
    On the inside there is (should) be a black rubber washer that isolates the copper from the galvanized.
    I've seen these connections many times with and without corrosion and green patina. I think it's probably a crap shoot based on water type, washer and bushing condition.
    Hope that helps.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  7. #7
    Join Date
    May 2007
    Location
    Portland OR
    Posts
    43

    Default Re: What is the likelihood?

    Reis, are you certain that is copper? I've used CPVC fittings like that, and the metal half is brass (FlowGuard fittings). If so, then it's not an issue.


  8. #8
    Richard Moore's Avatar
    Richard Moore Guest

    Default Re: What is the likelihood?

    There is that leak coming from under the teflon tape...


  9. #9
    Join Date
    Sep 2008
    Location
    Texas
    Posts
    745

    Default Re: What is the likelihood?

    yeah, the bushing on the T to the CPVC shouldn't have been copper but it is pretty minor. It could go a long time without even noticing any corrosion and then again may last forever without any problems at all.


  10. #10

    Default Re: What is the likelihood?

    Quote Originally Posted by Ken Meyer View Post
    Reis, are you certain that is copper? I've used CPVC fittings like that, and the metal half is brass (FlowGuard fittings). If so, then it's not an issue.
    I guess that I'm not certain that it's copper, so I will look into that and agree if it's brass we're good... I've used them myself and they've always been copper so I just assumed it was copper (that and the coloration). The reason I was drawn to it is for the corrosion running down the galv line (Richard - it was not an active leak, but I felt like it was a sign of a past one). I don't mean to pound this in to the ground, but I called the copper/galvanized connection (at the PVC bushing - I'm NOT referring to the flex line and never have) and explained to my client that it was pretty picky, but that the galvanized portion should have been done with copper. The homeowner got upset and since had another inspector out (for that and some other things). The inspector called me and we discussed it (although now that I think about it, I think he too is focused on that damn flex line - I know that one is isolated!). So I thought I'd throw it out on this forum to see just how picky I was being... Thanks for the input!


  11. #11
    Join Date
    Mar 2007
    Location
    Philadelphia PA
    Posts
    3,177

    Default Re: What is the likelihood?

    Isn't the cpvc too close to the water heater? I thought it has to be at least 18" away.

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

  12. #12
    Join Date
    Sep 2008
    Location
    Texas
    Posts
    745

    Default Re: What is the likelihood?

    CPVC is allowed for hot and cold water use. I don't know of any code section that requires CPVC to be 18" from the water heater. But I will research it. Just because I don't know of one doesn't mean it doesn't exist.

    Do you know the section of the code that this may violate?


Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •