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I can't find any good information about the history of PEX pipe, specifically how long it has been used for household cold/drinking water. I've heard it's been used in Europe for a decades, but can't find any reliable source to back this up. If someone could find one and add this to the article, that would be great. — Preceding unsigned comment added by Jaxelrod ( talk • contribs) 17:11, 18 October 2014 (UTC)
I merged some of the content from the XLPE article. However, some of it contradicts the material in this article. I do not know which is correct, so I am posting the contradictory material below. -- Kjkolb 06:31, 22 June 2007 (UTC)
CAN ANY BODY TELL ME THAT THE FINSIHED STOCK OF XLPE COMPOUND IF COMES IN CONTACT OF WATER THAN WHAT TYPE OF DAMAGE WILL OCCUR. WETHER THE MATERIAL IS SALVAGEABLE? OR ANY APPLICATIONS —Preceding unsigned comment added by 124.125.194.121 ( talk • contribs) 11:25, April 11, 2008
It would be desirable/useful to understand who the current producers of XLPE are and the material differences of their products Mstefaniak ( talk) 20:53, 26 February 2009 (UTC)
CalPipes (a pipefitters union in California) has opposed proposals to allow PEX in California potable water lines. ( http://www.calpipes.org/ProtectingCalifornians_PEX.asp)
CalPipes argues that California's proposals allow inappropriate kind(s) of PEX piping. CalPipes specifically complains about contaminants (such as MTBE, which is more commonly found in gasoline) forming in hot water lines. CalPipe also complains about PEX pipes that do not contain enough antioxidants to resist both sunlight (before installation) and hot chlorinated water (during years of use).
CalPipes links to research results from Chemical Accident Reconstruction Services (Chemaxx) ( http://chemaxx.com/polytube1.htm). Chemaxx states that peroxides used to make some kinds of PEX can leach into drinking water, and break down to form contaminants (such as MTBE) which are more commonly found in gasoline.
CalPipes' website includes a letter from Lubrizol ( http://www.calpipes.org/pdf/Lubrizol_Letter.pdf). Lubrizol's letter points out that there are various standards for PEX pipes, some stricter than others.
Lubrizol's website ( http://www.lubrizol.com/BuildingSolutions/TradeName/FlowGuardFlex/TypesPex.html) explains that Lubrizol's brand of PEX is made using the silane process. Lubrizol also points out that the silane process allows much higher levels of antioxidants in the PEX, so silane PEX can resist much more sunlight and hot chlorinated water than PEX made by either the peroxide process or the radiation process.
-- Jasper ( talk) 23:25, 14 June 2009 (UTC)
I corrected my previous post: SpecialChem's website ( http://www.specialchem4polymers.com/tc/silane-crosslinking-agents/index.aspx?id=trigger) mentions peroxides as part of typical silane cross-linking processes.
-- Jasper ( talk) 01:57, 15 June 2009 (UTC)
Silane PEX is also known as PEX-B.
-- Jasper ( talk) 22:22, 5 April 2010 (UTC) —Preceding unsigned comment added by 204.61.34.129 ( talk)
I updated 2 dead links. They have valid information but are from a site that sells PEX. The information is good but some may want to see if they can find a better non-commercial link. I only did this as it was the best one I could find to replace a dead one that is still valid but may be open to doubt.-- Marlin1975 ( talk) 16:18, 6 October 2009 (UTC)
it retains it's shape because of plastic deformation, not "shape memory" because plain aluminium isn't a shape memory alloy shape memory alloys have to be heat treated for permanently deform or restore original form —Preceding unsigned comment added by 69.171.137.121 ( talk) 22:12, 14 January 2010 (UTC)
What does HE-PEX have to do with aluminum PEX? Nothing actually; it just looks like a sneaky ad for Uponor. —Preceding unsigned comment added by 65.114.190.2 ( talk) 14:32, 9 November 2010 (UTC)
I came to this page looking for information about rotational molded XLPE tanks, especially susceptibility to UV and other degradation mechanisms, expected life in various environments. The article seems focused solely on pipe. I'd like to see this topic expanded to cover other uses for XLPE. Here's a link to one manufacturer http://www.aschulman.com/Americas/Rotomolding/Products/40/778/SCHULINK.aspx Slick4668 ( talk) 18:53, 21 October 2014 (UTC)
I'd have to agree. This article should be titled "Cross-Linked Polyethlyene pipe (PEX) or "PEX" should be lined to it. This material is also used for wire insulation in harsh environments. (SXL, TXL, GXL designations for differing thickness of insulation) — Preceding
unsigned comment added by
65.127.84.74 (
talk)
20:39, 11 March 2015 (UTC)
I check pages listed in Category:Pages with incorrect ref formatting to try to fix reference errors. One of the things I do is look for content for orphaned references in wikilinked articles. I have found content for some of Cross-linked polyethylene's orphans, the problem is that I found more than one version. I can't determine which (if any) is correct for this article, so I am asking for a sentient editor to look it over and copy the correct ref content into this article.
Reference named "Kaiser":
I apologize if any of the above are effectively identical; I am just a simple computer program, so I can't determine whether minor differences are significant or not. AnomieBOT ⚡ 22:57, 7 February 2018 (UTC)
Noticed a lack of discussion / material that mentions expansion fittings and their use in PEX-A. Seems a bit of an oversight considering their widespread use. Also simply not comfortable typing this myself. 209.252.172.194 ( talk) 01:27, 13 July 2023 (UTC)
This is the
talk page for discussing improvements to the
Cross-linked polyethylene article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||
|
I can't find any good information about the history of PEX pipe, specifically how long it has been used for household cold/drinking water. I've heard it's been used in Europe for a decades, but can't find any reliable source to back this up. If someone could find one and add this to the article, that would be great. — Preceding unsigned comment added by Jaxelrod ( talk • contribs) 17:11, 18 October 2014 (UTC)
I merged some of the content from the XLPE article. However, some of it contradicts the material in this article. I do not know which is correct, so I am posting the contradictory material below. -- Kjkolb 06:31, 22 June 2007 (UTC)
CAN ANY BODY TELL ME THAT THE FINSIHED STOCK OF XLPE COMPOUND IF COMES IN CONTACT OF WATER THAN WHAT TYPE OF DAMAGE WILL OCCUR. WETHER THE MATERIAL IS SALVAGEABLE? OR ANY APPLICATIONS —Preceding unsigned comment added by 124.125.194.121 ( talk • contribs) 11:25, April 11, 2008
It would be desirable/useful to understand who the current producers of XLPE are and the material differences of their products Mstefaniak ( talk) 20:53, 26 February 2009 (UTC)
CalPipes (a pipefitters union in California) has opposed proposals to allow PEX in California potable water lines. ( http://www.calpipes.org/ProtectingCalifornians_PEX.asp)
CalPipes argues that California's proposals allow inappropriate kind(s) of PEX piping. CalPipes specifically complains about contaminants (such as MTBE, which is more commonly found in gasoline) forming in hot water lines. CalPipe also complains about PEX pipes that do not contain enough antioxidants to resist both sunlight (before installation) and hot chlorinated water (during years of use).
CalPipes links to research results from Chemical Accident Reconstruction Services (Chemaxx) ( http://chemaxx.com/polytube1.htm). Chemaxx states that peroxides used to make some kinds of PEX can leach into drinking water, and break down to form contaminants (such as MTBE) which are more commonly found in gasoline.
CalPipes' website includes a letter from Lubrizol ( http://www.calpipes.org/pdf/Lubrizol_Letter.pdf). Lubrizol's letter points out that there are various standards for PEX pipes, some stricter than others.
Lubrizol's website ( http://www.lubrizol.com/BuildingSolutions/TradeName/FlowGuardFlex/TypesPex.html) explains that Lubrizol's brand of PEX is made using the silane process. Lubrizol also points out that the silane process allows much higher levels of antioxidants in the PEX, so silane PEX can resist much more sunlight and hot chlorinated water than PEX made by either the peroxide process or the radiation process.
-- Jasper ( talk) 23:25, 14 June 2009 (UTC)
I corrected my previous post: SpecialChem's website ( http://www.specialchem4polymers.com/tc/silane-crosslinking-agents/index.aspx?id=trigger) mentions peroxides as part of typical silane cross-linking processes.
-- Jasper ( talk) 01:57, 15 June 2009 (UTC)
Silane PEX is also known as PEX-B.
-- Jasper ( talk) 22:22, 5 April 2010 (UTC) —Preceding unsigned comment added by 204.61.34.129 ( talk)
I updated 2 dead links. They have valid information but are from a site that sells PEX. The information is good but some may want to see if they can find a better non-commercial link. I only did this as it was the best one I could find to replace a dead one that is still valid but may be open to doubt.-- Marlin1975 ( talk) 16:18, 6 October 2009 (UTC)
it retains it's shape because of plastic deformation, not "shape memory" because plain aluminium isn't a shape memory alloy shape memory alloys have to be heat treated for permanently deform or restore original form —Preceding unsigned comment added by 69.171.137.121 ( talk) 22:12, 14 January 2010 (UTC)
What does HE-PEX have to do with aluminum PEX? Nothing actually; it just looks like a sneaky ad for Uponor. —Preceding unsigned comment added by 65.114.190.2 ( talk) 14:32, 9 November 2010 (UTC)
I came to this page looking for information about rotational molded XLPE tanks, especially susceptibility to UV and other degradation mechanisms, expected life in various environments. The article seems focused solely on pipe. I'd like to see this topic expanded to cover other uses for XLPE. Here's a link to one manufacturer http://www.aschulman.com/Americas/Rotomolding/Products/40/778/SCHULINK.aspx Slick4668 ( talk) 18:53, 21 October 2014 (UTC)
I'd have to agree. This article should be titled "Cross-Linked Polyethlyene pipe (PEX) or "PEX" should be lined to it. This material is also used for wire insulation in harsh environments. (SXL, TXL, GXL designations for differing thickness of insulation) — Preceding
unsigned comment added by
65.127.84.74 (
talk)
20:39, 11 March 2015 (UTC)
I check pages listed in Category:Pages with incorrect ref formatting to try to fix reference errors. One of the things I do is look for content for orphaned references in wikilinked articles. I have found content for some of Cross-linked polyethylene's orphans, the problem is that I found more than one version. I can't determine which (if any) is correct for this article, so I am asking for a sentient editor to look it over and copy the correct ref content into this article.
Reference named "Kaiser":
I apologize if any of the above are effectively identical; I am just a simple computer program, so I can't determine whether minor differences are significant or not. AnomieBOT ⚡ 22:57, 7 February 2018 (UTC)
Noticed a lack of discussion / material that mentions expansion fittings and their use in PEX-A. Seems a bit of an oversight considering their widespread use. Also simply not comfortable typing this myself. 209.252.172.194 ( talk) 01:27, 13 July 2023 (UTC)