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Does Onix Tubing oxygen barrier work?

Has anyone had trouble with ferrous parts rusting when using Onix radiant tubing? I am repiping our system that has staple up Onix and finding the pumps are rusting pretty severely after just 3 years and there is lots of rust slime coating all the pipes. I've had plumbers blame the Onix, saying it doesn't have an oxygen barrier. But Watts Radiant clearly is marketing a product with sophisticated oxygen barrier. The tubing is only a few years old, so not the old school rubber which definitely had problems.

Comments

  • SWEISWEI Posts: 7,356
    Makeup water

    If you shut off the automatic water feeder, how long does the system hold pressure?
  • SnowmeltSnowmelt Posts: 746
    I can't

    Comment on what you bought but I have an onix system in operation, it just finished it's sixth year.



    So yes it works.
  • kcoppkcopp Posts: 2,636
    I have worked....

    on a  number of Onix tubing systems. If there is a barrier I do not think it works very well. I have replaced corroded pumps, flow checks and seen expansion tanks and spirovents clog up w/ rust. Your system should be flushed and cleaned. Then a good O2 inhibitor added. Rhomar or Fernox come to mind.
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