{"id":3601,"date":"2026-01-19T13:17:55","date_gmt":"2026-01-19T05:17:55","guid":{"rendered":"https:\/\/rentonehose.com\/?p=3601"},"modified":"2026-01-22T13:35:12","modified_gmt":"2026-01-22T05:35:12","slug":"what-do-mpa-and-psi-in-the-hydraulic-hose-mean","status":"publish","type":"post","link":"https:\/\/rentonehose.com\/fr\/blog\/what-do-mpa-and-psi-in-the-hydraulic-hose-mean","title":{"rendered":"Que signifient les unit\u00e9s \u00ab MPa \u00bb et \u00ab PSI \u00bb sur les flexibles hydrauliques ?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Afficher\/masquer la table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Basculer<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/rentonehose.com\/fr\/blog\/what-do-mpa-and-psi-in-the-hydraulic-hose-mean\/#Importance_of_Right_Pressure_in_Hydraulic_Hoses\" >L'importance d'une pression ad\u00e9quate dans les flexibles hydrauliques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/rentonehose.com\/fr\/blog\/what-do-mpa-and-psi-in-the-hydraulic-hose-mean\/#What_Does_PSI_Mean\" >Que signifie \u00ab PSI \u00bb ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/rentonehose.com\/fr\/blog\/what-do-mpa-and-psi-in-the-hydraulic-hose-mean\/#What_Does_MPa_Mean_in_Hydraulic_Hose\" >Que signifie \u00ab MPa \u00bb dans le domaine des flexibles hydrauliques ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/rentonehose.com\/fr\/blog\/what-do-mpa-and-psi-in-the-hydraulic-hose-mean\/#MPa_vs_PSI_Are_they_the_Same_Units\" >MPa et PSI : s'agit-il des m\u00eames unit\u00e9s ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/rentonehose.com\/fr\/blog\/what-do-mpa-and-psi-in-the-hydraulic-hose-mean\/#Do_Manufacturers_Use_Both_PSI_and_MPa_Units_on_Hoses\" >Les fabricants utilisent-ils \u00e0 la fois les unit\u00e9s PSI et MPa sur les flexibles ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rentonehose.com\/fr\/blog\/what-do-mpa-and-psi-in-the-hydraulic-hose-mean\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<p><span style=\"font-weight: 400;\">Les syst\u00e8mes hydrauliques sont utilis\u00e9s dans la quasi-totalit\u00e9 des engins lourds, notamment les grues, les pelles m\u00e9caniques, les tracteurs, etc. Ces syst\u00e8mes utilisent des flexibles pour acheminer le fluide hydraulique sous pression. Chaque flexible hydraulique poss\u00e8de une pression nominale sp\u00e9cifique, indiqu\u00e9e en MPa ou en PSI. Cependant, une question subsiste : que signifient les unit\u00e9s MPa et PSI sur un flexible hydraulique ?<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Il s'agit de deux unit\u00e9s diff\u00e9rentes qui mesurent toutes deux la m\u00eame chose : la pression. Cependant, elles ne sont pas utilis\u00e9es partout de la m\u00eame mani\u00e8re. Le PSI est privil\u00e9gi\u00e9 dans certaines r\u00e9gions du monde, tandis que d'autres utilisent le MPa. Il est essentiel de bien comprendre ces deux unit\u00e9s pour garantir la s\u00e9curit\u00e9 du syst\u00e8me. Dans cet article, je vais tout vous expliquer sur le MPa et le PSI. Alors, c'est parti !<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Importance_of_Right_Pressure_in_Hydraulic_Hoses\"><\/span><b>L'importance d'une pression ad\u00e9quate dans les flexibles hydrauliques<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-3605\" src=\"https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/Importance-of-Right-Pressure-in-Hydraulic-Hoses-300x225.webp\" alt=\"L&#039;importance d&#039;une pression ad\u00e9quate dans les flexibles hydrauliques\" width=\"500\" height=\"375\" srcset=\"https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/Importance-of-Right-Pressure-in-Hydraulic-Hoses-300x225.webp 300w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/Importance-of-Right-Pressure-in-Hydraulic-Hoses-768x576.webp 768w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/Importance-of-Right-Pressure-in-Hydraulic-Hoses-500x375.webp 500w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/Importance-of-Right-Pressure-in-Hydraulic-Hoses-800x600.webp 800w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/Importance-of-Right-Pressure-in-Hydraulic-Hoses.webp 1000w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Le bon fonctionnement d'un syst\u00e8me hydraulique d\u00e9pend d'une pression interne ad\u00e9quate. Ce syst\u00e8me utilise un fluide hydraulique. Lorsque la machine fonctionne, la pompe refoule le fluide, cr\u00e9ant ainsi une pression hydraulique. Le fluide s'\u00e9coule ensuite dans le flexible hydraulique et p\u00e9n\u00e8tre dans le v\u00e9rin. N'oubliez pas que tout syst\u00e8me hydraulique comporte un v\u00e9rin muni d'une tige.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Le fluide p\u00e9n\u00e8tre dans le v\u00e9rin, exerce une pression et fait sortir la tige. Cette tige se d\u00e9place vers l'avant et effectue l'action sp\u00e9cifique, c'est-\u00e0-dire soulever ou tirer. Une fois la t\u00e2che accomplie, le fluide retourne du v\u00e9rin vers l'ext\u00e9rieur par les flexibles. La pression \u00e0 l'int\u00e9rieur du v\u00e9rin diminue alors, et la tige se r\u00e9tracte.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Le fluide \u00e9tant sous haute pression, le flexible doit \u00eatre suffisamment r\u00e9sistant pour y r\u00e9sister. \u00c0 cette fin, les fabricants fixent des limites de pression sp\u00e9cifiques pour les flexibles. Si la pression \u00e0 l'int\u00e9rieur du flexible reste dans ces limites, celui-ci ne pr\u00e9sente aucun danger. En cas de d\u00e9passement de ces limites, le flexible peut c\u00e9der. Une pression tr\u00e8s \u00e9lev\u00e9e \u00e0 l'int\u00e9rieur du flexible hydraulique peut entra\u00eener plusieurs probl\u00e8mes. Parmi ceux-ci figurent les fuites, les fissures et m\u00eame l'\u00e9clatement complet du flexible.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Non seulement la haute pression, mais aussi la basse pression dans le syst\u00e8me posent probl\u00e8me. Pourquoi ? Parce que si la pression est trop faible, le syst\u00e8me hydraulique ne fonctionnera tout simplement pas correctement. Il convient de noter que la basse pression n\u2019endommage pas le flexible, contrairement \u00e0 la haute pression. C'est pourquoi vous devez toujours v\u00e9rifier la pression nominale maximale, qu'elle soit exprim\u00e9e en PSI ou en MPa. Cela vous garantit d'utiliser le flexible dans des applications o\u00f9 la pression reste en toute s\u00e9curit\u00e9 dans les limites nominales.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Does_PSI_Mean\"><\/span><b>Que signifie \u00ab PSI \u00bb ?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-3607\" src=\"https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-PSI-Mean-300x225.webp\" alt=\"Que signifie \u00ab PSI \u00bb ?\" width=\"500\" height=\"375\" srcset=\"https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-PSI-Mean-300x225.webp 300w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-PSI-Mean-768x576.webp 768w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-PSI-Mean-500x375.webp 500w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-PSI-Mean-800x600.webp 800w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-PSI-Mean.webp 1000w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><b>PSI signifie \u201c livres par pouce carr\u00e9 \u201d. En d'autres termes, il s'agit d'une unit\u00e9 de pression qui indique la pression exerc\u00e9e par pouce carr\u00e9. Imaginez un poids de 200 livres reposant sur une surface d'un pouce carr\u00e9. La pression exerc\u00e9e sur cette surface sp\u00e9cifique serait donc de 200 PSI.<\/b><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Imaginons que vous <\/span><a href=\"https:\/\/rentonehose.com\/fr\/hydraulic-hose-manufacturer\/\"><b>avoir un tuyau hydraulique<\/b><\/a><span style=\"font-weight: 400;\"> avec une pression nominale maximale de 2 000 PSI. Cela signifie que le tuyau peut supporter en toute s\u00e9curit\u00e9 une pression allant jusqu'\u00e0 2 000 PSI. Si la pression d\u00e9passe cette limite, le tuyau peut commencer \u00e0 fuir, voire \u00e9clater si le mat\u00e9riau est endommag\u00e9. L'unit\u00e9 de pression PSI est couramment utilis\u00e9e aux \u00c9tats-Unis et au Canada. Presque tous les fabricants am\u00e9ricains indiquent la pression nominale de leurs tuyaux en PSI. C'est l'un des principaux crit\u00e8res permettant d'identifier un tuyau fabriqu\u00e9 aux \u00c9tats-Unis.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Does_MPa_Mean_in_Hydraulic_Hose\"><\/span><b>Que signifie \u00ab MPa \u00bb dans le domaine des flexibles hydrauliques ?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-3606\" src=\"https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-MPa-Mean-in-Hydraulic-Hose-300x225.webp\" alt=\"Que signifie \u00ab MPa \u00bb dans le domaine des flexibles hydrauliques ?\" width=\"500\" height=\"375\" srcset=\"https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-MPa-Mean-in-Hydraulic-Hose-300x225.webp 300w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-MPa-Mean-in-Hydraulic-Hose-768x576.webp 768w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-MPa-Mean-in-Hydraulic-Hose-500x375.webp 500w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-MPa-Mean-in-Hydraulic-Hose-800x600.webp 800w, https:\/\/rentonehose.com\/wp-content\/uploads\/2026\/01\/What-Does-MPa-Mean-in-Hydraulic-Hose.webp 1000w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><b>MPa signifie \u201c m\u00e9gapascal \u201d et d\u00e9signe une unit\u00e9 de pression utilis\u00e9e dans le syst\u00e8me m\u00e9trique. Elle sert \u00e9galement \u00e0 exprimer la pression, mais il s'agit d'une unit\u00e9 l\u00e9g\u00e8rement inf\u00e9rieure au PSI. Un m\u00e9gapascal \u00e9quivaut \u00e0 145 PSI. Cette unit\u00e9, le m\u00e9gapascal, est d\u00e9riv\u00e9e du \u201c pascal \u201d, la plus petite unit\u00e9 de pression. Les syst\u00e8mes hydrauliques fonctionnant \u00e0 haute pression, le m\u00e9gapascal est l'unit\u00e9 de pression utilis\u00e9e.\u00a0<\/b><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Le PSI faisait partie du syst\u00e8me d'unit\u00e9s imp\u00e9rial, couramment utilis\u00e9 aux \u00c9tats-Unis et au Canada. En revanche, le MPa est une unit\u00e9 m\u00e9trique, plus couramment utilis\u00e9e en Europe et en Asie. Les flexibles dont la pression nominale est indiqu\u00e9e en MPa sur l'\u00e9tiquette sont fabriqu\u00e9s en Europe ou en Asie. Les fabricants actuels utilisent \u00e0 la fois le MPa et le PSI afin de rendre leurs indications de pression plus faciles \u00e0 comprendre partout dans le monde. Comme je l'ai dit pr\u00e9c\u00e9demment, le m\u00e9gapascal est l'unit\u00e9 la plus grande, mais il est d\u00e9riv\u00e9 du pascal.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Un m\u00e9gapascal \u00e9quivaut \u00e0 1 000 000 de pascals. Pour les applications \u00e0 basse pression, on n\u2019utilise pas les m\u00e9gapascals. Dans ces cas-l\u00e0, le pascal est l\u2019unit\u00e9 la plus couramment utilis\u00e9e. Tous les syst\u00e8mes hydrauliques et les flexibles sont soumis \u00e0 des pressions extr\u00eamement \u00e9lev\u00e9es. L\u2019utilisation d\u2019unit\u00e9s plus petites, comme le pascal, n\u2019est donc tout simplement pas pratique. C\u2019est pourquoi les fabricants pr\u00e9f\u00e8rent le m\u00e9gapascal, l\u2019unit\u00e9 la plus grande. Cela facilite grandement l\u2019affichage de ces pressions extr\u00eamement <\/span><a href=\"https:\/\/rentonehose.com\/fr\/high-pressure-hose\/\"><b>hautes pressions \u00e0 l'int\u00e9rieur du tuyau<\/b><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"MPa_vs_PSI_Are_they_the_Same_Units\"><\/span><b>MPa et PSI : s'agit-il des m\u00eames unit\u00e9s ?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<p><b>Oui. Le MPa et le PSI sont des unit\u00e9s de pression. Ils permettent donc de mesurer la pression exacte \u00e0 l'int\u00e9rieur du flexible hydraulique. Les valeurs de pression exprim\u00e9es dans ces deux unit\u00e9s peuvent diff\u00e9rer. Cependant, elles indiquent toutes deux la m\u00eame pression interne, mais dans des unit\u00e9s diff\u00e9rentes. \u00c0 premi\u00e8re vue, la pression exprim\u00e9e en PSI peut sembler plus \u00e9lev\u00e9e que celle exprim\u00e9e en MPa, mais elles correspondent en r\u00e9alit\u00e9 \u00e0 la m\u00eame pression.<\/b><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Comme je l'ai dit tout \u00e0 l'heure, 1 MPa \u00e9quivaut \u00e0 145 PSI. Supposons que le tuyau ait une pression nominale maximale de 145 PSI. Mais en MPa, la pression nominale n'est que de 1 MPa. 145 PSI et 1 MPa repr\u00e9sentent exactement la m\u00eame pression. Le MPa \u00e9tant une unit\u00e9 plus grande, la valeur num\u00e9rique exprim\u00e9e en MPa est inf\u00e9rieure \u00e0 celle exprim\u00e9e en PSI pour une m\u00eame pression. Mais ces valeurs diff\u00e9rentes n'ont aucune incidence sur la pression \u00e0 l'int\u00e9rieur du tuyau.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">La principale diff\u00e9rence entre le MPa et le PSI r\u00e9side dans les r\u00e9gions o\u00f9 ces unit\u00e9s sont utilis\u00e9es. Aux \u00c9tats-Unis et au Canada, le syst\u00e8me imp\u00e9rial reste la norme ; la pression y est donc mesur\u00e9e en PSI. Dans la plupart des autres pays du monde cependant \u2014 en Europe, en Asie, etc. \u2014, on utilise le syst\u00e8me m\u00e9trique, o\u00f9 la pression est exprim\u00e9e en m\u00e9gapascals (MPa).<\/span><\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td><b>MPa (m\u00e9gapascal)<\/b><\/td>\n<td><b>PSI (livres par pouce carr\u00e9)<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">1\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">145\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">5\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">725\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">10\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1450\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">15\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2175\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">20\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2900\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">21\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">3045\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">25\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">3625\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">30\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">4350\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">35\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">5075\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">40\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">5800\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Ce tableau de conversion vous aidera \u00e0 convertir ces deux unit\u00e9s et leur valeur. Supposons qu'un tuyau ait une pression maximale de 4 350 PSI. Dans le syst\u00e8me m\u00e9trique, sa pression nominale serait de 30 MPa. Techniquement, vous pouvez utiliser soit 4 350 PSI, soit 30 MPa ; les deux valeurs ont la m\u00eame signification. La diff\u00e9rence entre les unit\u00e9s peut \u00eatre \u00e9limin\u00e9e en effectuant une simple conversion, comme indiqu\u00e9 dans le tableau.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Do_Manufacturers_Use_Both_PSI_and_MPa_Units_on_Hoses\"><\/span><b>Les fabricants utilisent-ils \u00e0 la fois les unit\u00e9s PSI et MPa sur les flexibles ?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Oui, les fabricants actuels indiquent \u00e0 la fois les unit\u00e9s PSI et MPa sur leurs flexibles. Cela permet de mieux comprendre la capacit\u00e9 de pression, quelle que soit la r\u00e9gion o\u00f9 le flexible est utilis\u00e9.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Autrefois, les transports et les \u00e9changes commerciaux \u00e0 l'int\u00e9rieur des pays \u00e9taient limit\u00e9s. Les flexibles fabriqu\u00e9s en Asie \u00e9taient principalement utilis\u00e9s en Asie. Les fabricants avaient donc l'habitude d'indiquer les pressions nominales sur les tuyaux en une seule unit\u00e9, \u00e0 savoir le MPa (m\u00e9gapascal). De m\u00eame, les tuyaux fabriqu\u00e9s aux \u00c9tats-Unis \u00e9taient destin\u00e9s uniquement \u00e0 la client\u00e8le am\u00e9ricaine ; leurs pressions nominales \u00e9taient donc exprim\u00e9es en PSI. Cependant, les choses ont chang\u00e9 depuis que le monde est devenu un village global.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Les tuyaux fabriqu\u00e9s en Asie sont d\u00e9sormais exp\u00e9di\u00e9s vers les \u00c9tats-Unis et de nombreuses autres r\u00e9gions du monde. Gr\u00e2ce \u00e0 cela, les clients de diff\u00e9rentes r\u00e9gions peuvent utiliser des tuyaux fabriqu\u00e9s dans leur propre r\u00e9gion. Les fabricants indiquent donc d\u00e9sormais la pression nominale sur les tuyaux \u00e0 la fois en PSI et en MPa. Cela permet aux clients de comprendre plus facilement la limite de pression exacte. Les clients en Europe ou en Asie ont tendance \u00e0 utiliser le MPa, tandis que ceux aux \u00c9tats-Unis ou au Canada utilisent le PSI.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><b>Conclusion<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">En conclusion, le MPa et le PSI ont tous deux leur utilit\u00e9. On croit souvent \u00e0 tort que ces deux unit\u00e9s indiquent des pressions diff\u00e9rentes, ce qui est faux. Elles expriment la m\u00eame pression selon des valeurs diff\u00e9rentes. Par exemple, 1 MPa et 145 PSI ont la m\u00eame signification. Elles indiquent exactement la m\u00eame pression \u00e0 l'int\u00e9rieur du syst\u00e8me. Ces deux unit\u00e9s repr\u00e9sentent donc la m\u00eame pression, simplement exprim\u00e9e par des chiffres diff\u00e9rents. Dans cet article, j\u2019ai pr\u00e9sent\u00e9 les notions de base concernant le MPa et le PSI, y compris la mani\u00e8re de les convertir l\u2019une en l\u2019autre.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Les syst\u00e8mes hydrauliques sont utilis\u00e9s dans la quasi-totalit\u00e9 des engins lourds, notamment les grues, les pelles m\u00e9caniques, les tracteurs, etc. Ces syst\u00e8mes utilisent des flexibles pour acheminer le fluide hydraulique sous pression. Chaque flexible hydraulique poss\u00e8de une pression nominale sp\u00e9cifique indiqu\u00e9e en MPa ou en PSI. Cependant, une question demeure : que signifient les unit\u00e9s MPa et PSI sur un flexible hydraulique ?   Ces\u2026<\/p>","protected":false},"author":10,"featured_media":3608,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3601","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Do MPa and PSI in the Hydraulic Hose Mean?<\/title>\n<meta name=\"description\" content=\"What do MPa and PSI in the hydraulic hose mean? 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