{"id":10753,"date":"2022-12-01T08:49:49","date_gmt":"2022-12-01T00:49:49","guid":{"rendered":"https:\/\/limegreen-okapi-448594.hostingersite.com\/?p=10753"},"modified":"2026-05-31T11:45:57","modified_gmt":"2026-05-31T03:45:57","slug":"nominal-pressure-vs-maximum-pressure","status":"publish","type":"post","link":"https:\/\/raymonvalve.com\/fr\/blog\/nominal-pressure-vs-maximum-pressure\/","title":{"rendered":"<strong>Pression nominale vs. pression maximale<\/strong>"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>Pression nominale<\/strong><\/h2>\n\n\n\n<p>La pression nominale est repr\u00e9sent\u00e9e par le symbole PN et indique la pression de service maximale \u00e0 une temp\u00e9rature donn\u00e9e. Pour un corps de vanne en acier au carbone, la pression de service autoris\u00e9e pour l'application est inf\u00e9rieure \u00e0 200. La PN, \u00e9galement appel\u00e9e pression nominale, est utilis\u00e9e comme pr\u00e9fixe pour les classes de pression des brides. La pression nominale de la vanne fait r\u00e9f\u00e9rence \u00e0 la pression de conception et de service de la vanne, et ce niveau de pression est classifi\u00e9 selon les normes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pression maximale<\/strong><\/h2>\n\n\n\n<p>La pression maximale fait r\u00e9f\u00e9rence \u00e0 la pression maximale \u00e0 laquelle le gaz est fourni au client. La pression de l'air est la pression maximale au niveau de la mer car la gravit\u00e9 terrestre attire l'air vers la surface de la Terre. Le mode de fonctionnement peut \u00eatre observ\u00e9 par la vari\u00e9t\u00e9 de m\u00e9thodes telles qu'une \u00e9quipe d'ing\u00e9nierie qui effectue de nombreux types d'analyses informatiques. Elle effectue des tests destructifs. Utilisation d'une calculatrice fournie par les normes de l'industrie. L'American Petroleum Institute est une organisation bien connue. Elle aide \u00e0 d\u00e9finir quelle devrait \u00eatre la pression maximale de la cuve sous pression.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pression nominale vs. pression maximale<\/strong><\/h2>\n\n\n\n<p>1. La pression nominale est la r\u00e9sistance \u00e0 la pression du produit. Elle est \u00e0 la temp\u00e9rature de r\u00e9f\u00e9rence exprim\u00e9e en PN dont l'unit\u00e9 est MPa. La pression maximale de la vanne \u00e0 soupape est la pression r\u00e9elle de l'utilisateur et elle fonctionne correctement. Elle se situe dans l'environnement d'application et doit \u00eatre inf\u00e9rieure \u00e0 la pression nominale de la vanne \u00e0 soupape.<\/p>\n\n\n\n<p>2. La pression nominale de diff\u00e9rents mat\u00e9riaux a de nombreuses temp\u00e9ratures de r\u00e9f\u00e9rence telles que la temp\u00e9rature de r\u00e9f\u00e9rence de l'acier qui est de 250 degr\u00e9s Celsius. En pression maximale, la temp\u00e9rature maximale est de 300 degr\u00e9s Celsius. La pression maximale d\u00e9pend de la forme, de la taille et de la pression de la cuve.<\/p>\n\n\n\n<p>3. La pression nominale est enregistr\u00e9e comme 1,0 MPa sous PN 1,0 MPa. La pression maximale est de 10 MPa et elle est enregistr\u00e9e comme P 1083,8 MPa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Comprendre la pression maximale et nominale<\/strong><\/h2>\n\n\n\n<p>La pression nominale d'une vanne d\u00e9signe le symbole PN. C'est la pression de service maximale admissible lorsqu'elle est appliqu\u00e9e \u00e0 une certaine pression. Pour les vannes de r\u00e9gulation, elles sont m\u00e9lang\u00e9es avec le corps en carbone. Elle fait r\u00e9f\u00e9rence \u00e0 la pression de service maximale autoris\u00e9e pour les applications inf\u00e9rieures \u00e0 120 degr\u00e9s Celsius. Pour le corps de vanne en fonte, elle est d\u00e9sign\u00e9e par la pression de service maximale. La pression nominale des vannes de r\u00e9gulation est d\u00e9termin\u00e9e non seulement par la pression de service maximale, mais aussi par la temp\u00e9rature de service maximale et les mat\u00e9riaux. Ces pressions nominales ne servent pas seulement \u00e0 satisfaire la pression nominale, mais aussi la pression maximale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>La pression maximale fait r\u00e9f\u00e9rence \u00e0 la pression maximale sp\u00e9cifi\u00e9e par la temp\u00e9rature de service maximale. Elle se situe dans la tuyauterie \u00e0 chaque niveau pour les op\u00e9rations s\u00fbres du syst\u00e8me de tuyauterie. La pression maximale est exprim\u00e9e par Pt. La pression nominale est la r\u00e9sistance \u00e0 la compression du produit \u00e0 la temp\u00e9rature de r\u00e9f\u00e9rence. Elle est exprim\u00e9e en unit\u00e9 PN comme MPa. Elle est d\u00e9sign\u00e9e comme la pression de conception donn\u00e9e par la r\u00e9sistance m\u00e9canique des composants de tuyauterie.<\/p>","protected":false},"excerpt":{"rendered":"<p>Nominal pressure Nominal pressure shows the symbol PN and it allows maximum operating pressure at the [&hellip;]<\/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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10753","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/posts\/10753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/comments?post=10753"}],"version-history":[{"count":2,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/posts\/10753\/revisions"}],"predecessor-version":[{"id":13122,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/posts\/10753\/revisions\/13122"}],"wp:attachment":[{"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/media?parent=10753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/categories?post=10753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/tags?post=10753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}