{"id":8600,"date":"2024-05-11T07:19:20","date_gmt":"2024-05-11T07:19:20","guid":{"rendered":"https:\/\/www.ifanfittings.com\/?p=8600"},"modified":"2026-01-08T15:39:27","modified_gmt":"2026-01-08T07:39:27","slug":"comment-choisir-des-tuyaux-pex-partie-3","status":"publish","type":"post","link":"https:\/\/www.waterpipefactory.com\/fr\/connaissance\/comment-choisir-des-tuyaux-pex-partie-3\/","title":{"rendered":"Comment choisir des tuyaux PEX (partie 3)"},"content":{"rendered":"

Tuyaux PEX Consid\u00e9rations relatives aux dimensions<\/strong><\/h3>\n\n\n\n

Au-del\u00e0 de la formulation, les dimensions sont \u00e9galement importantes. Le PER utilise des dimensions nominales, mais les dimensions r\u00e9elles varient l\u00e9g\u00e8rement\u00a0:<\/p>\n\n\n\n

- Le PEX 1\u20444\u201d a un diam\u00e8tre int\u00e9rieur (ID) de 0,25\u201d et un diam\u00e8tre ext\u00e9rieur (OD) de 0,375\u201d<\/p>\n\n\n\n

– 3\u20448\u201d PEX has 0.375\u201d ID and 0.500\u201d OD<\/p>\n\n\n\n

– 1\u20442\u201d PEX has 0.500\u201d ID and 0.625\u201d OD<\/p>\n\n\n\n

– 3\u20444\u201d PEX has 0.750\u201d ID and 0.875\u201d OD<\/p>\n\n\n\n

– 1\u201d PEX has 1.00\u201d ID and 1.125\u201d OD<\/p>\n\n\n\n

Surveillez le diam\u00e8tre ext\u00e9rieur lors du raccordement des raccords, qui utilisent un dimensionnement nominal. Des parois plus \u00e9paisses r\u00e9duisent le diam\u00e8tre int\u00e9rieur des tuyaux PEX, ce qui affecte le d\u00e9bit\u00a0; il est donc conseill\u00e9 d'augmenter le diam\u00e8tre en cons\u00e9quence. Les tubes en cuivre ont un diam\u00e8tre ext\u00e9rieur et un diam\u00e8tre int\u00e9rieur identiques, de sorte qu'un m\u00eame dimensionnement peut entra\u00eener des d\u00e9bits PEX inf\u00e9rieurs dans certaines situations.<\/p>\n\n\n\n

V\u00e9rifiez \u00e9galement que les pressions nominales des tuyaux PEX choisis r\u00e9pondent aux besoins de l'application. 160 et 200 psi sont courants pour les installations r\u00e9sidentielles. Des exigences commerciales plus \u00e9lev\u00e9es n\u00e9cessitent des pressions plus \u00e9lev\u00e9es.<\/p>\n\n\n\n

Enfin, pensez aux diff\u00e9rentes longueurs de bobines. Le PEX est disponible en bobines de 100 \u00e0 plus de 1\u00a0000 pieds. Des bobines plus longues r\u00e9duisent le nombre d'\u00e9pissures n\u00e9cessaires par rapport \u00e0 des longueurs plus courtes. Achetez uniquement ce dont vous avez besoin pour \u00e9viter le gaspillage.<\/p>\n\n\n\n

Consid\u00e9rations relatives aux performances<\/strong><\/h3>\n\n\n\n

Au-del\u00e0 des diff\u00e9rences de notation, les propri\u00e9t\u00e9s des tubes sont importantes :<\/p>\n\n\n\n

– Temperature Cycling – PEX-A has the highest elasticity and memory to resist brittleness after repeated heating and cooling cycles.<\/p>\n\n\n\n

– Flow Rate – Larger PEX diameters and thin walls provide the best flow. But flexible PEX has more head loss than rigid copper. Size up accordingly.<\/p>\n\n\n\n

– Pressure Surge Resistance – PEX withstands spikes better than rigid materials. But proper system design is still crucial.<\/p>\n\n\n\n

– Chemical Resistance – PEX-A offers the best resistance to aggressive like chloramines or acids that attack other plastics and rubbers.<\/p>\n\n\n\n

– Fatigue Resistance – PEX-A endures structural stresses like bending, flexing, and vibration best long-term.<\/p>\n\n\n\n

La compatibilit\u00e9 avec les conditions m\u00e9caniques, thermiques, chimiques et hydrauliques pr\u00e9vues permet de choisir le PEX le plus adapt\u00e9 \u00e0 chaque application. Un seul produit ne peut pas parfaitement convenir \u00e0 tous les sc\u00e9narios.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Si vous \u00eates int\u00e9ress\u00e9, veuillez cliquer ici et nous contacter pour obtenir notre catalogue de produits\uff01<\/strong><\/a><\/p>","protected":false},"excerpt":{"rendered":"

PEX Pipes Dimension Considerations Beyond formulation, dimensions matter too. PEX uses nominal sizing but actual dimensions vary slightly: – 1\u20444\u201d PEX has 0.25\u201d inside diameter (ID) and 0.375\u201d outside diameter (OD) – 3\u20448\u201d PEX has 0.375\u201d ID and 0.500\u201d OD – 1\u20442\u201d PEX has 0.500\u201d ID and 0.625\u201d OD – 3\u20444\u201d PEX has 0.750\u201d ID […]<\/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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