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Fosta pex for steam return?

brucebruce Member Posts: 222
Will fostapex survive use as condensate return piping in a steam system?


  • heatpro02920heatpro02920 Member Posts: 991
    I would

    call the rep and ask, I only use black pipe on steam systems and I only use pex in the ceiling and walls, for DHW and FHW systems.
  • IronmanIronman Member Posts: 3,533
    Definitely not

    It's only rated for 180*. Copper is okay below the water line on returns, but no kind of pex.
    Bob Boan

    You can choose to do what you want, but you cannot choose the consequences.
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