Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Flex connectors with oxygen barrier for heat pump?

Dave_4 Member Posts: 1,405
Manufacturer and most design info I've seen recommend flex hoses of some sort on the loop and hydronic side to minimize vibration transmission. I've been having a hard time finding hose or tubing that can meet the flow requirements (12-15gpm, 1" ID min) and has an oxygen barrier (and doesn't cost $20 per foot). I only need about 10 feet of the stuff, so I hate to buy a roll of large diameter PEX.

Is oxygen permeability even a concern with a short length of tube? Or should I just use rigid pipe?


  • Brad White
    Brad White Member Posts: 2,398
    Nexus Valve Hose Kits?


    Try Nexus. They have hose kits from 1/2" to 2" size and in lengths to 36 inches. They are stainless steel braid around a rubber interior. I do not know the 02 permeability but have used systems like this for years without issues.
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"

    -Ernie White, my Dad
  • hr
    hr Member Posts: 6,106
    Watts Radiant Onix

    would fit the bill. Try Emerson Swann their rep in NY. They had a bunch of short pieces built for their VRV kickspace heater installation kits. I'm sure they could supply short heat pump whips.

    Really any hydraulic supply company could supply and build short hoses to your spec. MPH )multi purpose hose) is available from Gates, Dayco and others that would fit that spec need.

    hot rod

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
  • Dave_4
    Dave_4 Member Posts: 1,405
    Thanks for the input

    It sounds like oxygen barrier might not be a big deal in a few feet of hose, but I'll look into the Onix - sounds promising.
This discussion has been closed.