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Old 11-14-2011, 04:10 PM   #1
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O2 barrier for PEX


Ok, I had another thread detailing my difficulty in finding 1" O2 barrier PEX locally. So I had a brilliant idea....

The difference between O2 barrier and non-barrier PEX is, duh, the O2 barrier. Manufacturers use EVOH usually. This is glorified Saran Wrap.

Why not just install regular PEX, and wrap it in GLAD or Saran-wrap??? Won't that provide O2 protection??? I only need like 6 feet- a managable amount to wrap by hand.

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Old 11-14-2011, 05:01 PM   #2
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O2 barrier for PEX


Why not just use copper for the short section?

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Old 11-14-2011, 05:42 PM   #3
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O2 barrier for PEX


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Originally Posted by Bob999 View Post
Why not just use copper for the short section?
Fair question. The answer is cost- since there is galvanized steel for a majority of the primary circuit I will need 4 dielectric unions, 4 elbows, 4 female to cu connectors and 4 ccu to male connectors for 1" pipe. That's like $80 for the 2 secondary circuits vs. $10 for the PEX.
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Old 11-14-2011, 05:44 PM   #4
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O2 barrier for PEX


can you just use 3/4" for 6 feet?

or make 2 parallel runs of 3/4" so you have no flow loss.
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Old 11-14-2011, 06:26 PM   #5
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O2 barrier for PEX


Quote:
Originally Posted by gbwillner View Post
Fair question. The answer is cost- since there is galvanized steel for a majority of the primary circuit I will need 4 dielectric unions, 4 elbows, 4 female to cu connectors and 4 ccu to male connectors for 1" pipe. That's like $80 for the 2 secondary circuits vs. $10 for the PEX.
So use 6' of galvanized pipe.
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Old 11-14-2011, 06:46 PM   #6
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O2 barrier for PEX


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So use 6' of galvanized pipe.
can't. Not just because of the similar cost issue, but also because of the bulk of the pipe in the limited space I have remaining.
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Old 11-14-2011, 07:42 PM   #7
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O2 barrier for PEX


Quote:
Originally Posted by Bob999 View Post
So use 6' of galvanized pipe.
can't. Not just because of the similar cost issue, but also because of the bulk of the pipe in the limited space I have remaining.

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