do not have a Oxygen diffusion barrier. These are very nice "Engineered Plastic" manifolds. The "Plastic" had me wondering because I have always heard the Uponor gospel according to non-barrier.
I had to press for this answer and their response was that, "its small, relative to the system".
That one surprised me a bit. Really, if I am going all out with the non-barrier premise with the DIN4726 rating blah blah blah, you think they could coat their new manifolds with something to prevent oxygen diffusion. (?)
I do understand that the DIN4726 rating doesn't state that it is "oxygen impenetrable", it states that it has a rating of so "many mils per hour".
If you want to press the issue, if non-barrier tubing is embedded in concrete, that technically should not be exposed and oxygen permeable either.
Make sense to anyone else or am I splitting hairs here?
CUSTOMER WAS INQUIRING ABOUT USING A PIECE OF NON OXYGEN BARRIER PEX TUBING IN THE SUPPLY SIDE OF A PIECE OF RADIATION APP 12".WAS WONDERING ABOUT THE IMPLICATIONS INVOLVED WITH AIR ENTERING THE SYSTEM.THANK YOU SO MUCH!!