{"id":8597,"date":"2024-05-11T07:12:38","date_gmt":"2024-05-11T07:12:38","guid":{"rendered":"https:\/\/www.ifanfittings.com\/?p=8597"},"modified":"2026-01-08T15:37:54","modified_gmt":"2026-01-08T07:37:54","slug":"how-to-choose-pex-pipes-part2","status":"publish","type":"post","link":"https:\/\/www.waterpipefactory.com\/fr\/connaissance\/how-to-choose-pex-pipes-part2\/","title":{"rendered":"Comment choisir des tuyaux PEX (partie 2)"},"content":{"rendered":"

PEX Pipes Grades Comparison<\/h3>\n\n\n\n

The main PEX formulations include:<\/h3>\n\n\n\n

PEX-A:<\/strong><\/h4>\n\n\n\n

– Created using the Engel method for peroxide crosslinking.<\/p>\n\n\n\n

– The highest degree of crosslinking makes it the most heat, chemical, and chlorine resistant.<\/p>\n\n\n\n

– Withstands up to 200\u00b0F intermittent and 180\u00b0F continuous exposure.<\/p>\n\n\n\n

– Excellent freeze-thaw durability and abrasion resistance.<\/p>\n\n\n\n

– The premium PEX grade is recommended for critical potable plumbing supply.<\/p>\n\n\n\n

– Tendency to return to original size after freeze expansion helps prevent cracks.<\/p>\n\n\n\n

– Usually the most expensive PEX grade.<\/p>\n\n\n\n

PEX-B:<\/strong><\/h4>\n\n\n\n

– Uses silane for chemical crosslinking during extrusion.<\/p>\n\n\n\n

– Moderate degree of crosslinking provides a cost-effective balance.<\/p>\n\n\n\n

– Designed for up to 180\u00b0F intermittent and 140\u00b0F continuous exposure.<\/p>\n\n\n\n

– Good freeze durability though slightly less than PEX-A.<\/p>\n\n\n\n

– The most common general-purpose PEX material for residential plumbing and radiant heating.<\/p>\n\n\n\n

– Provides good chlorine resistance.<\/p>\n\n\n\n

– Costs moderately less than PEX-A. The baseline grade for PEX Pipes.<\/p>\n\n\n\n

PEX-C:<\/strong><\/h4>\n\n\n\n

– Uses electron beam radiation to induce crosslinking post-extrusion.<\/p>\n\n\n\n

– Weakest degree of crosslinking but still adequate for some applications.<\/p>\n\n\n\n

– For intermittent exposure only up to 150\u00b0F for short periods.<\/p>\n\n\n\n

– Basic freeze resistance though less than PEX-A\/B.<\/p>\n\n\n\n

– Most economical PEX grade but for limited uses.<\/p>\n\n\n\n

– Primarily intended for low-pressure radiant floor heating loops and distribution tubing.<\/p>\n\n\n\n

– Not recommended for pressurized potable plumbing lines.<\/p>\n\n\n\n

The grade choice depends on temperature, pressure, and potable water expectations. Use PEX-A for critical links like main hot-cold supply lines. Reserve PEX-C for non-critical in-floor heat loops only. And choose PEX-B as the happy medium for most average demands. Matching performance capabilities to applications prevents issues.<\/p>\n\n\n\n

Contactez-nous<\/a><\/p>\n\n\n\n

\"\"<\/a><\/figure>","protected":false},"excerpt":{"rendered":"

PEX Pipes Grades Comparison The main PEX formulations include: PEX-A: – Created using the Engel method for peroxide crosslinking. – The highest degree of crosslinking makes it the most heat, chemical, and chlorine resistant. – Withstands up to 200\u00b0F intermittent and 180\u00b0F continuous exposure. – Excellent freeze-thaw durability and abrasion resistance. – The premium PEX […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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