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Press fitting

ZmanZman Member Posts: 6,001
I found this one the other day. It is on a 10 year old significantly over pumped domestic recirc pipe. The pipe ends were reamed and installation looked correct. Not sure what brand fitting.
"If you can't explain it simply, you don't understand it well enough"
Albert Einstein

Comments

  • Intplm.Intplm. Member Posts: 1,190
    Was that a leaker too?
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 7,306
    Was 1 o ring missing??
  • ZmanZman Member Posts: 6,001
    It was leaking. The O ring fell out after the cut.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • Intplm.Intplm. Member Posts: 1,190
    Velocity must of got that -O- ring. Had to have!?
  • ZmanZman Member Posts: 6,001
    The O ring was intact the leak was at the corroded ares concealed by the pipe.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • GilgoGilgo Member Posts: 3
    Please explain, or describe, over pumped.
  • pecmsgpecmsg Member Posts: 1,508
    Zman said:

    I found this one the other day. It is on a 10 year old significantly over pumped domestic recirc pipe. The pipe ends were reamed and installation looked correct. Not sure what brand fitting.

    Send it to Viega and let them check it!
    https://www.viega.us/en/homepage.html

    10 years is fairly young for a failure but like anything else the install is important. I've seen solder joints fail quicker then that...…………….



















    Some were mine!
  • ZmanZman Member Posts: 6,001
    Gilgo said:

    Please explain, or describe, over pumped.

    It is best practice to not exceed 4 ft/sec through copper piping.
    When it comes to 24/7/365 domestic recirc, particularly with aggressive water, 2 ft/sec or less is a better plan. This building originally had a 3/4 hp close coupled circ. I don't know the exact flow rates but they certainly were greater than 10 ft/sec.
    http://s3.supplyhouse.com/product_category_files/11448-Flow-Rate-Chart.pdf
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • Harvey RamerHarvey Ramer Member Posts: 2,215
    That looks like a classic case of cavitation corrosion.
    Ramer Mechanical
    ramermechanical.com
    To learn more about this professional, click here to visit their ad in Find A Contractor.
    Zman
  • Kybeans403Kybeans403 Member Posts: 43
    Was it even a viega fitting? Lots of cheap knock offs out there
  • ZmanZman Member Posts: 6,001
    Some of the fittings in the building are viega. That fitting did not have a brand stamp.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
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