{"id":10736,"date":"2022-11-28T08:40:59","date_gmt":"2022-11-28T00:40:59","guid":{"rendered":"https:\/\/limegreen-okapi-448594.hostingersite.com\/?p=10736"},"modified":"2022-11-28T08:44:28","modified_gmt":"2022-11-28T00:44:28","slug":"valve-nominal-pressure-new","status":"publish","type":"post","link":"https:\/\/raymonvalve.com\/fr\/blog\/valve-nominal-pressure-new\/","title":{"rendered":"<strong>Pression nominale de la vanne<\/strong>"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>Vanne<\/strong><\/h2>\n\n\n\n<p>\u00c0 la base, les vannes sont les dispositifs qui servent \u00e0 r\u00e9guler, contr\u00f4ler et diriger le flux dans un processus ou un syst\u00e8me. Elles pr\u00e9sentent g\u00e9n\u00e9ralement une gamme de caract\u00e9ristiques qui aide \u00e0 d\u00e9finir les applications. Si vous cherchez \u00e0 contr\u00f4ler le flux en assurant la s\u00e9curit\u00e9 dans des syst\u00e8mes qui transportent des solides, des liquides, des gaz ou tout autre fluide. Il existe de nombreuses vannes en acier inoxydable disponibles pour aider au contr\u00f4le du flux.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Qu'est-ce que la pression nominale d'une vanne ?<\/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 nominale de la vanne sur les composants<\/strong><\/h2>\n\n\n\n<p>La pression nominale est la valeur num\u00e9rique de la s\u00e9rie conventionnelle adopt\u00e9e. Elle est utilis\u00e9e \u00e0 titre de r\u00e9f\u00e9rence pour caract\u00e9riser les tuyaux, les pi\u00e8ces sp\u00e9ciales et les autres \u00e9l\u00e9ments des tuyauteries. Ceci est li\u00e9 \u00e0 la pression hydraulique interne que les \u00e9l\u00e9ments supportent en l'absence de charges externes. Comme pour les autres pressions, les caract\u00e9ristiques g\u00e9om\u00e9triques de l'accouplement des \u00e9l\u00e9ments tels que les brides. Ils sont de la m\u00eame s\u00e9rie de pression nominale de la vanne et la pression interne d\u00e9pend de :<\/p>\n\n\n\n<p><strong>1.<\/strong> &nbsp; Type de mat\u00e9riau<\/p>\n\n\n\n<p><strong>2.<\/strong> &nbsp; Coefficient de s\u00e9curit\u00e9 appliqu\u00e9<\/p>\n\n\n\n<p><strong>3.<\/strong> &nbsp; Temp\u00e9rature<\/p>\n\n\n\n<p><strong>4.<\/strong> &nbsp; Conception des \u00e9l\u00e9ments<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Trois pressions nominales de vanne<\/strong><\/h2>\n\n\n\n<p>Les normes ISO 16422 pour les raccords et les tuyaux sont fabriqu\u00e9es en polychlorure de vinyle orient\u00e9 pour le transport de l'eau sous pression. Les sp\u00e9cifications d\u00e9finissent 3 pressions nominales de vanne pour le coefficient de conception PVC O :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1.<\/strong> &nbsp; &nbsp; <strong>Pression de service admissible (PSA)<\/strong><\/h3>\n\n\n\n<p>La pression de service admissible (AOP) est la pression hydrostatique maximale. Ces composants sont capables de supporter les services en permanence.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.<\/strong> &nbsp; &nbsp; <strong>Pression d'\u00e9preuve admissible (ATP)<\/strong><\/h3>\n\n\n\n<p>La pression d'\u00e9preuve admissible (ATP) est la pression hydrostatique maximale \u00e0 laquelle un composant install\u00e9 sur site peut r\u00e9sister pendant une tr\u00e8s courte p\u00e9riode. Elle garantit l'int\u00e9grit\u00e9 et l'\u00e9tanch\u00e9it\u00e9 de la tuyauterie.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3.<\/strong> &nbsp; &nbsp; <strong>Pression d'\u00e9clatement (BP)<\/strong><\/h3>\n\n\n\n<p>La pression d'\u00e9clatement (BP) est l'une des pressions hydrostatiques internes. Elle est mesur\u00e9e en l'absence de charges externes qui rendent le mat\u00e9riau de la tuyauterie hors service. Pour les tuyaux en mat\u00e9riaux homog\u00e8nes, cette pression nominale est li\u00e9e \u00e0 la r\u00e9sistance \u00e0 la traction minimale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pression nominale pour diff\u00e9rents types de vannes<\/strong><\/h2>\n\n\n\n<p>La pression nominale d'une vanne, d\u00e9sign\u00e9e par le symbole PN, correspond \u00e0 la pression de service maximale admissible appliqu\u00e9e \u00e0 une certaine temp\u00e9rature. Pour les vannes de r\u00e9gulation, elle est associ\u00e9e au corps en carbone et repr\u00e9sente la pression de service maximale autoris\u00e9e pour des applications inf\u00e9rieures \u00e0 120 degr\u00e9s Celsius. Pour les corps de vannes en fonte, elle se r\u00e9f\u00e8re \u00e0 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 doivent satisfaire non seulement \u00e0 la pression nominale, mais aussi \u00e0 la pression de service.<\/p>","protected":false},"excerpt":{"rendered":"<p>Valve At their basics, valves are the devices that work to regulate, control and direct the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7572,"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":"default","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-10736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/posts\/10736","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=10736"}],"version-history":[{"count":1,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/posts\/10736\/revisions"}],"predecessor-version":[{"id":10737,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/posts\/10736\/revisions\/10737"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/media\/7572"}],"wp:attachment":[{"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/media?parent=10736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/categories?post=10736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/raymonvalve.com\/fr\/wp-json\/wp\/v2\/tags?post=10736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}