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  1. #1
    Join Date
    Oct 2010
    Location
    Comer, GA
    Posts
    26

    Default why the corrosion?

    My search for a main water supply cutoff found this device (pressure regulator) with a corroded connection to copper supply line. Why is it corroded and leaking?

    P3250524_resize.JPG

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  2. #2

    Default Re: why the corrosion?

    Galvanic reaction..........dis-similar metals.


  3. #3
    Join Date
    Oct 2010
    Location
    Comer, GA
    Posts
    26

    Default Re: why the corrosion?

    Quote Originally Posted by David Wigger View Post
    Galvanic reaction..........dis-similar metals.

    Exactly my thinking, but what is that device?


  4. #4
    Join Date
    Mar 2011
    Location
    Scottsdale, AZ
    Posts
    18

    Default Re: why the corrosion?

    Quote Originally Posted by jim baird View Post
    Exactly my thinking, but what is that device?
    Looks like a pressure regulator to me. Strange place for it. I'm in Phoenix though so they are almost always outside where the water main comes s into the house.

    Arizona Home Inspections & Consulting
    WWW.arizonahic.com
    Expertise to protect you and your investment. ®

  5. #5

    Default Re: why the corrosion?

    Quote Originally Posted by Greg Hammond View Post
    Looks like a pressure regulator to me. Strange place for it. I'm in Phoenix though so they are almost always outside where the water main comes s into the house.
    Looks like we are in the crawl space, so that would be the riser coming up from the meter.


  6. #6
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    27,136

    Default Re: why the corrosion?

    Looks like copper to a galvanized steel nipple to a pressure regulator and back to copper.

    As previously stated - galvanic reaction (rusting through) due to dissimilar metals.

    Jerry Peck
    Construction Litigation Consultant ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  7. #7
    Join Date
    Feb 2013
    Location
    NY
    Posts
    76

    Default Re: why the corrosion?

    Quote Originally Posted by jim baird View Post
    My search for a main water supply cutoff found this device (pressure regulator) with a corroded connection to copper supply line. Why is it corroded and leaking?

    P3250524_resize.JPG
    Is that a basement or crawl space ? And is that a relatively newer build ?


  8. #8
    Join Date
    Oct 2010
    Location
    Comer, GA
    Posts
    26

    Default Re: why the corrosion?

    Thanks for the replies.

    1975 ranch on crawl. Because it is an active leak I called for a plumber to go under there and fix the leak, and install a main cutoff on the riser.


  9. #9
    Join Date
    Sep 2013
    Location
    North Carolina
    Posts
    3

    Default Re: why the corrosion?

    Always interesting to see photos from other inspections.

    No floor insulation or sill plate under the floor framing?

    Keith


  10. #10
    Join Date
    Oct 2010
    Location
    Comer, GA
    Posts
    26

    Default Re: why the corrosion?

    Quote Originally Posted by Keith Rogers View Post
    Always interesting to see photos from other inspections.

    No floor insulation or sill plate under the floor framing?

    Keith
    Wall is capped by 4" solid block, no sill plate and no anchors.


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