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Try this link.
http://www.pbpsa.com/eng/tech-pipeoxy.asp
There's a good explanation here:
http://www.pexuniverse.com/content/pex-tubing-types-oxygen-barrier-vs-non-barrier
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∙ 14y ago
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Will pex piping corrode radiators and boilers by oxygen through the pipe?
To avoid corrosion in heating and radiant heating systems, oxygen barrier PEX must be used. Do not use non-barrier PEX for your heating project if you have any cast iron in the system. Source: PexUniverse.com (Learning Center)
Do you need oxygen barrier pex for in floor radiant heat?
hahahahahahahha, yes
Can you use pex piping to hook up your boiler to radiators?
yes it will handle the heat as long as your boiler is started with copper
Does pex tubing freeze?
At what temp does pex pipe freeze
Can you use oxygen barrier pex for potable water supply?
YES. As long as the mfr had it tested and passed the nec stamp. Even if they didn't spend the boat load of cash to pass the test, it more than likely meets the criteria and it will work. More than likely better than Pex with out the O2 barrier. Problem arises from not having that approval stamp. That will more than likely break the local and National codes for residential. And definitely the ones for commercial, rest... Best if you use original Non-Barrier PEX or PEX-Al-PEX pipe which approved for use for both plumbing and heating applications.
How do you join PEX pipe to galvanized pipe?
Yes
What is Pex pipe primarily used for?
The Pex pipe is used when you need to lay pipe all night long. It's the most flexible, and widest pipe that's used when laying pipe all night long, and is definitely the best.
Which is better ppr pipe or pex?
Depends on consumption.
Can you glue an HC PEX tube to PVC pipe?
No, you'll need to put a pipe adapter on the PVC, then use a standard PEX crimp fitting. Or you can use a SharkBite fitting. They work well for this.
How do you connect copper pipe to pex tubing?
The copper should fit in the Pex fitting. My mistake, Pex uses the crimp rings. There is a coupling and other fitting that you just push the pipe into and it grabs and seal the pipe. Pex, pvc, copper, all will fit. Just use a coupling between the copper and the pex. I had my doubts the first time I used this, but it does work and doesn't leak. Just make sure that the pipe bottoms out in the connection.
Where can PEX fittings be purchased?
PEX fittings can be purchased at Pex pipe and fittings. There is also a phone number attached and it is: 0632 599 0659 you can also do it on their site at cn-efield dot com.
What is pex pipe?
PEX is a very durable and flexible pipe made from crosslinked polyethylene. It's resistant to scale and chlorine and can't corrode. It's much easier to install than copper or any rigid plastic pipe. It's easy to cut, bend and couple up. It has a huge series of brass fittings . I love working with PEX and have repaired and even re-piped whole houses with it.Old fashioned plumbers often 'trash-talk' PEX as it takes away the 'mystery' about soldering etc. You don't have to be a traditional plumber to use PEX. I learned all about PEX as a well technician.
