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Old 02-02-2012, 08:45 PM   #1
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Non metallic PEX fittings


We construct aeration systems in wastewater applications where the pH can sometimes be corrosive to metal. I love PEX and have stretched it over 1/2" PVC being used as a nipple. But I would like to use legitimate PEX nipples if possible. Does anyone know if non-metallic PEX fittings exist.

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Old 02-02-2012, 09:20 PM   #2
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Non metallic PEX fittings


Looks like Zurn makes a plastic fitting called PolyAlloy that's compatible with both the standard crimp rings & ss clamps. http://www.pexinfo.com/

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Old 02-02-2012, 10:08 PM   #3
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Non metallic PEX fittings


I think zurn has been a class action suit about their fittings.

I know my plumbing warehouse changed from zurn to someone else.
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Old 02-02-2012, 10:30 PM   #4
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Non metallic PEX fittings


It was Zurn fittings, but the brass ones, http://www.zurnclassaction.com/. Not sure about who else makes plastic ones for the OP's needs.
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Old 02-02-2012, 10:33 PM   #5
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Non metallic PEX fittings


viega still rules in pex
never used plastic fitting only bronze but they have them

http://www.viega.net/xchg/en-us/hs.xsl/5208.htm
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Old 02-02-2012, 10:48 PM   #6
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Non metallic PEX fittings


we use wirsbo pex with brass and polly fittings...have not had any problems expandable with rings...tools are expensive....
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Old 02-02-2012, 10:50 PM   #7
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Non metallic PEX fittings


Quote:
Originally Posted by jaydevries View Post
viega still rules in pex
never used plastic fitting only bronze but they have them

http://www.viega.net/xchg/en-us/hs.xsl/5208.htm
You mean propress? They certainly are sweet, but not sure if the tool is available for rent to the diyers.
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Old 02-03-2012, 10:00 PM   #8
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Non metallic PEX fittings


no propress is for copper press. for pex is pureflow pexpress you can use there manual hand press or a propress gun with right pex press head
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Old 02-04-2012, 06:49 AM   #9
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Non metallic PEX fittings


Wirsbo Uponor makes two different types of fittings. There are the brass ones, which I have not been too happy with, and the polysulfone plastic fittings, which I think are great. As mentioned, Wirsbo is the only company using the expansion system with crimp rings, which requires a special tool which costs several hundred dollars to purchase.

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