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Press fitting

Zman
Zman Member Posts: 7,611
in Pipe Deterioration
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: 2,196
    Was that a leaker too?
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,474
    Was 1 o ring missing??
  • Zman
    Zman Member Posts: 7,611
    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: 2,196
    Velocity must of got that -O- ring. Had to have!?
  • Zman
    Zman Member Posts: 7,611
    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
  • Gilgo
    Gilgo Member Posts: 5
    Please explain, or describe, over pumped.
  • pecmsg
    pecmsg Member Posts: 5,291
    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!
  • Zman
    Zman Member Posts: 7,611
    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 Ramer
    Harvey Ramer Member Posts: 2,261
    That looks like a classic case of cavitation corrosion.
    Zman
  • Kybeans403
    Kybeans403 Member Posts: 56
    Was it even a viega fitting? Lots of cheap knock offs out there
  • Zman
    Zman Member Posts: 7,611
    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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