{"id":15079,"date":"2026-04-09T16:58:25","date_gmt":"2026-04-09T08:58:25","guid":{"rendered":"https:\/\/www.xintaivalves.com\/?p=15079"},"modified":"2026-04-16T17:03:20","modified_gmt":"2026-04-16T09:03:20","slug":"what-is-cryogenic-gate-valve","status":"publish","type":"post","link":"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/","title":{"rendered":"Vanne \u00e0 opercule cryog\u00e9nique expliqu\u00e9e : Conception, fonctionnement et applications"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 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=\"Basculer 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:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#What_Makes_Cryogenic_Service_Different_from_Standard_Valve_Applications\" >Ce qui distingue le service cryog\u00e9nique des applications de vannes standard<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Five_Design_Features_That_Make_a_Cryogenic_Gate_Valve_Work\" >Cinq caract\u00e9ristiques de conception qui font fonctionner une vanne \u00e0 opercule cryog\u00e9nique<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Extended_Bonnet_Gate_Valve\" >Vanne \u00e0 opercule \u00e0 chapeau allong\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Material_Selection\" >S\u00e9lection des mat\u00e9riaux<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Wedge_Gate_Design_and_Seating\" >Conception et si\u00e8ge de l'opercule \u00e0 coin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Cavity_Pressure_Relief\" >D\u00e9compression de la cavit\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Fire-Safe_Design\" >Conception \u00e0 l&#039;\u00e9preuve du feu<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#How_the_Valve_Opens_Closes_and_Seals_at_Extreme_Temperatures\" >Comment la vanne s'ouvre, se ferme et assure l'\u00e9tanch\u00e9it\u00e9 \u00e0 des temp\u00e9ratures extr\u00eames<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Cryogenic_Torque_Expert\" >Expert en couple cryog\u00e9nique<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Industries_and_Applications_That_Rely_on_Cryogenic_Gate_Valves\" >Industries et applications qui d\u00e9pendent des vannes \u00e0 opercule cryog\u00e9niques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#How_Cryogenic_Gate_Valves_Compare_to_Globe_Ball_and_High-Pressure_Designs\" >Comment les vannes \u00e0 opercule cryog\u00e9niques se comparent aux conceptions \u00e0 soupape, \u00e0 boisseau sph\u00e9rique et haute pression<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Cryogenic_Globe_Valves_and_Flow_Regulation\" >Vannes \u00e0 soupape cryog\u00e9niques et r\u00e9gulation du d\u00e9bit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Ball_Valves_and_Cold_Flow_Risk\" >Vannes \u00e0 boisseau sph\u00e9rique et risque de d\u00e9bit \u00e0 froid<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#High_Pressure_Gate_Valve_Designs\" >Conceptions de vannes \u00e0 opercule haute pression<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#What_to_Know_Before_Installing_or_Maintaining_a_Cryogenic_Gate_Valve\" >Ce qu'il faut savoir avant d'installer ou d'entretenir une vanne \u00e0 opercule cryog\u00e9nique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#How_to_Evaluate_Cryogenic_Gate_Valve_Manufacturers_Before_You_Order\" >Comment \u00e9valuer les fabricants de vannes \u00e0 opercule cryog\u00e9niques avant de commander<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/what-is-cryogenic-gate-valve\/#Xintai_Cryogenic_Gate_Valves\" >Vannes \u00e0 opercule cryog\u00e9niques Xintai<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Une vanne \u00e0 opercule cryog\u00e9nique est une vanne industrielle sp\u00e9cialis\u00e9e con\u00e7ue pour un service \u00e0 tr\u00e8s basse temp\u00e9rature, fonctionnant de mani\u00e8re fiable jusqu'\u00e0 -196\u00b0C et en dessous. Les vannes standard \u00e9chouent dans ces conditions car le m\u00e9tal devient cassant et la contraction thermique provoque des fuites au niveau des joints.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/04\/image1-2-1024x682.webp\" alt=\"\" class=\"wp-image-15081\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/04\/image1-2-1024x682.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/04\/image1-2-300x200.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/04\/image1-2-768x512.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/04\/image1-2-18x12.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/04\/image1-2.webp 1229w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Makes_Cryogenic_Service_Different_from_Standard_Valve_Applications\"><\/span><strong>Ce qui distingue le service cryog\u00e9nique des applications de vannes standard<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La plupart des vannes industrielles sont con\u00e7ues pour des plages de temp\u00e9ratures mod\u00e9r\u00e9es. \u00c0 des temp\u00e9ratures cryog\u00e9niques, l'acier au carbone perd sa ductilit\u00e9, les joints \u00e9lastom\u00e8res se contractent et se fissurent, et les tiges se bloquent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La vanne cryog\u00e9nique a \u00e9t\u00e9 d\u00e9velopp\u00e9e sp\u00e9cifiquement pour r\u00e9soudre ces probl\u00e8mes, chaque \u00e9l\u00e9ment de conception abordant un mode de d\u00e9faillance que le mat\u00e9riel standard ne peut pas g\u00e9rer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Five_Design_Features_That_Make_a_Cryogenic_Gate_Valve_Work\"><\/span><strong>Cinq caract\u00e9ristiques de conception qui font fonctionner une vanne \u00e0 opercule cryog\u00e9nique<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.xintaivalves.com\/fr\/products\/cryogenic-gate-valve-2\/\">Vanne \u00e0 opercule cryog\u00e9nique<\/a> la conception est ax\u00e9e sur le maintien du m\u00e9canisme de fonctionnement \u00e0 des temp\u00e9ratures qui d\u00e9sactivent les vannes standard. Chaque caract\u00e9ristique ci-dessous existe pour une raison d'ing\u00e9nierie sp\u00e9cifique.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><a href=\"https:\/\/www.xintaivalves.com\/fr\/products\/cryogenic-gate-valve-2\/\"><img decoding=\"async\" src=\"https:\/\/dbfhaf64fpo53.cloudfront.net\/wp-content\/uploads\/2022\/02\/%E6%9C%AA%E6%A0%87%E9%A2%98-2-5.jpg\" alt=\"\" style=\"width:226px;height:auto\"\/><\/a><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.xintaivalves.com\/fr\/products\/cryogenic-gate-valve-2\/\">VANNE CRYOG\u00c9NIQUE<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Extended_Bonnet_Gate_Valve\"><\/span><strong>Vanne \u00e0 opercule \u00e0 chapeau allong\u00e9<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le chapeau allong\u00e9 \u00e9l\u00e8ve le garnissage de la tige bien au-dessus du niveau du liquide cryog\u00e9nique, cr\u00e9ant un espace vapeur qui maintient le joint suffisamment chaud pour fonctionner.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sans cette extension, l'humidit\u00e9 atmosph\u00e9rique g\u00e8le autour du garnissage et bloque la tige.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Material_Selection\"><\/span><strong>S\u00e9lection des mat\u00e9riaux<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L'acier au carbone devient cassant en dessous de -29\u00b0C, ce qui l'exclut pour le service cryog\u00e9nique. Une vanne \u00e0 opercule en acier inoxydable construite \u00e0 partir de 304, 304L ou 316L conserve sa ductilit\u00e9 jusqu'\u00e0 -196\u00b0C et est la nuance par d\u00e9faut pour les corps et chapeaux de vannes \u00e0 opercule cryog\u00e9niques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L'alliage de titane et le bronze d'aluminium C95800 sont disponibles lorsque les nuances d'acier inoxydable ne r\u00e9pondent pas aux exigences de l'application.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Wedge_Gate_Design_and_Seating\"><\/span><strong>Conception et si\u00e8ge de l'opercule \u00e0 coin<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La configuration de la vanne \u00e0 opercule \u00e0 coin presse le m\u00e9tal contre le m\u00e9tal \u00e0 l'interface d'\u00e9tanch\u00e9it\u00e9. Les si\u00e8ges et les faces du coin sont g\u00e9n\u00e9ralement rev\u00eatus de Stellite pour r\u00e9sister au grippage sous des cycles thermiques r\u00e9p\u00e9t\u00e9s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela produit une \u00e9tanch\u00e9it\u00e9 parfaite que les conceptions \u00e0 si\u00e8ge souple ne peuvent pas maintenir \u00e0 des temp\u00e9ratures cryog\u00e9niques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cavity_Pressure_Relief\"><\/span><strong>D\u00e9compression de la cavit\u00e9<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsque la vanne se ferme, le liquide pi\u00e9g\u00e9 dans la cavit\u00e9 du chapeau se r\u00e9chauffe l\u00e9g\u00e8rement et s'\u00e9vapore. Sans d\u00e9charge, l'accumulation de pression qui en r\u00e9sulte peut rompre le chapeau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un petit trou de d\u00e9charge dans le coin ou des si\u00e8ges auto-d\u00e9chargeurs \u00e9vacuent automatiquement la cavit\u00e9 avant que la pression n'atteigne un niveau dangereux.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Fire-Safe_Design\"><\/span><strong>Conception \u00e0 l&#039;\u00e9preuve du feu<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le GNL \u00e0 -162\u00b0C et les fluides cryog\u00e9niques inflammables similaires n\u00e9cessitent une construction ignifuge selon API 607. Cela garantit que la vanne maintient une \u00e9tanch\u00e9it\u00e9 fonctionnelle m\u00eame si le joint primaire est compromis lors d'un incendie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_the_Valve_Opens_Closes_and_Seals_at_Extreme_Temperatures\"><\/span><strong>Comment la vanne s'ouvre, se ferme et assure l'\u00e9tanch\u00e9it\u00e9 \u00e0 des temp\u00e9ratures extr\u00eames<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tourner le volant d\u00e9place le coin perpendiculairement au chemin d'\u00e9coulement. En pleine ouverture, le coin se r\u00e9tracte compl\u00e8tement de l'al\u00e9sage, laissant un passage direct avec une perte de charge minimale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En pleine fermeture, le coin appuie contre les deux faces des si\u00e8ges avec un contact m\u00e9tal sur m\u00e9tal. La tige allong\u00e9e maintient l'ensemble du garnissage dans la zone de vapeur plus chaude, bien au-dessus du liquide cryog\u00e9nique.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L'ouverture partielle n'est pas une position de fonctionnement. Elle \u00e9rode les faces des si\u00e8ges et supprime l'\u00e9tanch\u00e9it\u00e9 parfaite qui rend ces vannes n\u00e9cessaires en premier lieu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00e9rifiez la s\u00e9curit\u00e9 de votre op\u00e9ration manuelle<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comme mentionn\u00e9, les temp\u00e9ratures cryog\u00e9niques augmentent le frottement et la contraction des mat\u00e9riaux. Avant de sp\u00e9cifier une taille de volant, utilisez notre estimateur professionnel ci-dessous pour voir si le couple de rupture n\u00e9cessite un op\u00e9rateur \u00e0 engrenages.<\/p>\n\n\n\n<style>\n\/* \u6838\u5fc3\u5bb9\u5668 *\/\n.xintai-cryo-calc {\n    background: #ffffff;\n    padding: 30px;\n    border-radius: 16px;\n    border: 1px solid #f0f0f0;\n    max-width: 500px;\n    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n    color: #2c3e50;\n    margin: 30px auto;\n    box-shadow: 0 20px 50px rgba(0,0,0,0.1);\n    position: relative;\n}\n\n\/* Engineering Note \u6837\u5f0f *\/\n.xintai-eng-note {\n    background: #fff8f8;\n    border-left: 4px solid #d9534f;\n    padding: 15px;\n    margin-bottom: 25px;\n    border-radius: 4px;\n    font-size: 14px;\n    line-height: 1.6;\n    color: #444;\n}\n\n.xintai-eng-note strong { color: #d9534f; }\n\n\/* \u6807\u9898\u6837\u5f0f *\/\n.xintai-cryo-calc h3 {\n    margin: 0 0 5px 0;\n    color: #d9534f;\n    font-size: 22px;\n    display: flex;\n    align-items: center;\n    gap: 10px;\n}\n\n.xintai-cryo-calc h3 svg { width: 26px; height: 26px; fill: #d9534f; }\n\n.xintai-sub { font-size: 12px; color: #888; margin-bottom: 20px; display: block; }\n\n\/* \u8f93\u5165\u884c\u6837\u5f0f *\/\n.input-row { margin-bottom: 15px; }\n\n.input-row label {\n    display: flex;\n    align-items: center;\n    gap: 8px;\n    font-weight: 600;\n    font-size: 13px;\n    margin-bottom: 6px;\n    color: #34495e;\n}\n\n.input-row label svg { width: 16px; height: 16px; fill: #95a5a6; }\n\n.input-row input, .input-row select {\n    width: 100%;\n    padding: 10px;\n    border: 2px solid #edf2f7;\n    border-radius: 6px;\n    font-size: 14px;\n    transition: 0.3s;\n    background: #f8fafc;\n}\n\n.input-row input:focus {\n    border-color: #d9534f;\n    background: #fff;\n    outline: none;\n    box-shadow: 0 0 0 3px rgba(217, 83, 79, 0.1);\n}\n\n\/* \u6309\u94ae *\/\n.calc-btn {\n    width: 100%;\n    padding: 15px;\n    background: #d9534f;\n    color: #fff;\n    border: none;\n    border-radius: 6px;\n    font-weight: 700;\n    font-size: 15px;\n    cursor: pointer;\n    display: flex;\n    justify-content: center;\n    align-items: center;\n    gap: 8px;\n    transition: 0.3s;\n    text-transform: uppercase;\n}\n\n.calc-btn:hover { background: #c9302c; transform: translateY(-2px); }\n\n\/* \u7ed3\u679c\u9762\u677f *\/\n.res-panel {\n    margin-top: 25px;\n    background: #2c3e50;\n    border-radius: 10px;\n    padding: 18px;\n    color: #ecf0f1;\n    display: none;\n    animation: slideUp 0.4s ease-out;\n}\n\n@keyframes slideUp { from { opacity:0; transform: translateY(15px); } to { opacity:1; transform: translateY(0); } }\n\n.res-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }\n\n.res-card { background: rgba(255,255,255,0.05); padding: 12px; border-radius: 6px; text-align: center; border: 1px solid rgba(255,255,255,0.1); }\n\n.res-label { font-size: 10px; text-transform: uppercase; color: #bdc3c7; display: block; margin-bottom: 3px; }\n\n.res-val { font-size: 18px; font-weight: 700; color: #ff4d4d; }\n\n.warning-box {\n    margin-top: 15px;\n    background: rgba(217, 83, 79, 0.2);\n    padding: 12px;\n    border-radius: 6px;\n    font-size: 12px;\n    border: 1px solid rgba(217, 83, 79, 0.4);\n    display: flex;\n    gap: 10px;\n    line-height: 1.4;\n}\n<\/style>\n\n<div class=\"xintai-cryo-calc\">\n    <div class=\"xintai-eng-note\">\n        <strong>\ud83d\udca1 Note d'ing\u00e9nierie :<\/strong><br>\n        Aux temp\u00e9ratures cryog\u00e9niques, la contraction des mat\u00e9riaux peut augmenter consid\u00e9rablement le couple de rupture initial. Utilisez notre <strong>Estimateur de couple cryog\u00e9nique<\/strong> ci-dessous pour v\u00e9rifier si la taille de votre volant actuel fournit un levier suffisant ou si une bo\u00eete de vitesses \u00e0 rapport \u00e9lev\u00e9 est n\u00e9cessaire pour un fonctionnement manuel s\u00fbr.\n    <\/div>\n\n    <h3><span class=\"ez-toc-section\" id=\"Cryogenic_Torque_Expert\"><\/span>\n        <svg viewbox=\"0 0 24 24\"><path d=\"M12,15.5A3.5,3.5 0 0,1 8.5,12A3.5,3.5 0 0,1 12,8.5A3.5,3.5 0 0,1 15.5,12A3.5,3.5 0 0,1 12,15.5M19.43,12.97C19.47,12.65 19.5,12.33 19.5,12C19.5,11.67 19.47,11.34 19.43,11L21.54,9.37C21.73,9.22 21.78,8.95 21.66,8.73L19.66,5.27C19.54,5.05 19.27,4.96 19.05,5.05L16.56,6.05C16.04,5.66 15.5,5.32 14.87,5.07L14.5,2.42C14.46,2.18 14.25,2 14,2H10C9.75,2 9.54,2.18 9.5,2.42L9.13,5.07C8.5,5.32 7.96,5.66 7.44,6.05L4.95,5.05C4.73,4.96 4.46,5.05 4.34,5.27L2.34,8.73C2.21,8.95 2.27,9.22 2.46,9.37L4.57,11C4.53,11.34 4.5,11.67 4.5,12C4.5,12.33 4.53,12.65 4.57,12.97L2.46,14.63C2.27,14.78 2.21,15.05 2.34,15.27L4.34,18.73C4.46,18.95 4.73,19.03 4.95,18.95L7.44,17.94C7.96,18.34 8.5,18.68 9.13,18.93L9.5,21.58C9.54,21.82 9.75,22 10,22H14C14.25,22 14.46,21.82 14.5,21.58L14.87,18.93C15.5,18.67 16.04,18.34 16.56,17.94L19.05,18.95C19.27,19.03 19.54,18.95 19.66,18.73L21.66,15.27C21.78,15.05 21.73,14.78 21.54,14.63L19.43,12.97Z\" \/><\/svg>\n        Expert en couple cryog\u00e9nique\n    <span class=\"ez-toc-section-end\"><\/span><\/h3>\n    <span class=\"xintai-sub\">V\u00e9rification du dimensionnement pour le GNL \u00e0 -196\u00b0C et le service sub-z\u00e9ro<\/span>\n\n    <div class=\"input-row\">\n        <label>\n            <svg viewbox=\"0 0 24 24\"><path d=\"M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M12,4A8,8 0 0,1 20,12A8,8 0 0,1 12,20A8,8 0 0,1 4,12A8,8 0 0,1 12,4M11,6V18H13V6H11Z\" \/><\/svg>\n            Taille de la vanne (Pouce)\n        <\/label>\n        <input type=\"number\" id=\"v-size\" value=\"10\">\n    <\/div>\n\n    <div class=\"input-row\">\n        <label>\n            <svg viewbox=\"0 0 24 24\"><path d=\"M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M12,4A8,8 0 0,1 20,12A8,8 0 0,1 12,20A8,8 0 0,1 4,12A8,8 0 0,1 12,4M12.5,7V12.25L17,14.92L16.25,16.15L11,13V7H12.5Z\" \/><\/svg>\n            Pression diff\u00e9rentielle (PSI)\n        <\/label>\n        <input type=\"number\" id=\"v-pressure\" value=\"300\">\n    <\/div>\n\n    <div class=\"input-row\">\n        <label>\n            <svg viewbox=\"0 0 24 24\"><path d=\"M12,15.5A3.5,3.5 0 0,1 8.5,12A3.5,3.5 0 0,1 12,8.5A3.5,3.5 0 0,1 15.5,12A3.5,3.5 0 0,1 12,15.5M19.43,12.97C19.47,12.65 19.5,12.33 19.5,12C19.5,11.67 19.47,11.34 19.43,11L21.54,9.37C21.73,9.22 21.78,8.95 21.66,8.73L19.66,5.27C19.54,5.05 19.27,4.96 19.05,5.05L16.56,6.05C16.04,5.66 15.5,5.32 14.87,5.07L14.5,2.42C14.46,2.18 14.25,2 14,2H10C9.75,2 9.54,2.18 9.5,2.42L9.13,5.07C8.5,5.32 7.96,5.66 7.44,6.05L4.95,5.05C4.73,4.96 4.46,5.05 4.34,5.27L2.34,8.73C2.21,8.95 2.27,9.22 2.46,9.37L4.57,11C4.53,11.34 4.5,11.67 4.5,12C4.5,12.33 4.53,12.65 4.57,12.97L2.46,14.63C2.27,14.78 2.21,15.05 2.34,15.27L4.34,18.73C4.46,18.95 4.73,19.03 4.95,18.95L7.44,17.94C7.96,18.34 8.5,18.68 9.13,18.93L9.5,21.58C9.54,21.82 9.75,22 10,22H14C14.25,22 14.46,21.82 14.5,21.58L14.87,18.93C15.5,18.67 16.04,18.34 16.56,17.94L19.05,18.95C19.27,19.03 19.54,18.95 19.66,18.73L21.66,15.27C21.78,15.05 21.73,14.78 21.54,14.63L19.43,12.97Z\" \/><\/svg>\n            Type de r\u00e9ducteur\n        <\/label>\n        <select id=\"v-gear-type\">\n            <option value=\"0.95\">Conique (Efficacit\u00e9 95%)<\/option>\n            <option value=\"0.70\">\u00c0 vis sans fin (Efficacit\u00e9 70%)<\/option>\n        <\/select>\n    <\/div>\n\n    <div class=\"input-row\" style=\"margin-bottom: 25px;\">\n        <label>\n            <svg viewbox=\"0 0 24 24\"><path d=\"M2,12A10,10 0 0,1 12,2A10,10 0 0,1 22,12A10,10 0 0,1 12,22A10,10 0 0,1 2,12M12,4A8,8 0 0,0 4,12A8,8 0 0,0 12,20A8,8 0 0,0 20,12A8,8 0 0,0 12,4M11,7H13V13H17V15H11V7Z\" \/><\/svg>\n            Rapport de d\u00e9multiplication (X:1)\n        <\/label>\n        <input type=\"number\" id=\"v-ratio\" value=\"20\">\n    <\/div>\n\n    <button onclick=\"calculateTorque()\" class=\"calc-btn\">\n        Calculer le couple cryog\u00e9nique\n    <\/button>\n\n    <div id=\"result-box\" class=\"res-panel\">\n        <div class=\"res-grid\">\n            <div class=\"res-card\">\n                <span class=\"res-label\">Couple de la tige<\/span>\n                <span class=\"res-val\"><span id=\"stem-torque\">0<\/span> Nm<\/span>\n            <\/div>\n            <div class=\"res-card\">\n                <span class=\"res-label\">Couple d'entr\u00e9e<\/span>\n                <span class=\"res-val\"><span id=\"input-torque\">0<\/span> Nm<\/span>\n            <\/div>\n        <\/div>\n        \n        <div id=\"torque-warning\" class=\"warning-box\" style=\"display: none;\">\n            <svg style=\"width:24px;height:24px;flex-shrink:0\" viewbox=\"0 0 24 24\"><path fill=\"#d9534f\" d=\"M12,2L1,21H23L12,2M12,6L19.53,19H4.47L12,6M11,10V14H13V10H11M11,16V18H13V16H11Z\" \/><\/svg>\n            <div>\n                <strong>RISQUE DE BLOCAGE \u00c0 FROID :<\/strong> L'entr\u00e9e d\u00e9passe 80 Nm. Compte tenu de la contraction du mat\u00e9riau \u00e0 -196\u00b0C, l'op\u00e9ration manuelle peut \u00e9chouer. <strong>Un engrenage \u00e0 rapport \u00e9lev\u00e9 ou un actionneur est recommand\u00e9 !<\/strong>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<script>\nfunction calculateTorque() {\n    const size = parseFloat(document.getElementById('v-size').value);\n    const pressure = parseFloat(document.getElementById('v-pressure').value);\n    const efficiency = parseFloat(document.getElementById('v-gear-type').value);\n    const ratio = parseFloat(document.getElementById('v-ratio').value);\n\n    if (isNaN(size) || isNaN(pressure) || isNaN(ratio)) return;\n\n    \/\/ \u4f4e\u6e29\u5de5\u51b5\u7ecf\u9a8c\u516c\u5f0f\u4f30\u7b97 (\u7565\u5fae\u8c03\u9ad8\u4e86\u6469\u64e6\u7cfb\u6570\u4ee5\u6a21\u62df\u4f4e\u6e29\u4e0b\u7684\u51b7\u7f29\u8d1f\u8f7d)\n    const area = Math.PI * Math.pow((size \/ 2), 2);\n    const force = area * pressure;\n    const stemTorqueLbfIn = force * 0.35 * (size * 0.15); \/\/ \u4f4e\u6e29\u6469\u64e6\u7cfb\u6570\u8bbe\u4e3a0.35\n    const stemTorqueNm = stemTorqueLbfIn * 0.113; \n    const inputTorque = stemTorqueNm \/ (ratio * efficiency);\n\n    document.getElementById('stem-torque').innerText = stemTorqueNm.toFixed(1);\n    document.getElementById('input-torque').innerText = inputTorque.toFixed(1);\n    \n    document.getElementById('result-box').style.display = 'block';\n    \n    \/\/ \u8d85\u8fc7 80 Nm \u65f6\u663e\u793a\u9488\u5bf9\u4f4e\u6e29\u5de5\u51b5\u7684\u7279\u522b\u8b66\u544a\n    document.getElementById('torque-warning').style.display = (inputTorque > 80) ? 'flex' : 'none';\n}\n<\/script>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Industries_and_Applications_That_Rely_on_Cryogenic_Gate_Valves\"><\/span><strong>Industries et applications qui d\u00e9pendent des vannes \u00e0 opercule cryog\u00e9niques<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ces vannes sont pr\u00e9sentes dans tout processus o\u00f9 les gaz liqu\u00e9fi\u00e9s doivent \u00eatre contr\u00f4l\u00e9s en toute s\u00e9curit\u00e9 \u00e0 des temp\u00e9ratures extr\u00eames :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Les terminaux GNL et les installations de stockage traitent le gaz naturel \u00e0 -162\u00b0C lors des op\u00e9rations de chargement, d\u00e9chargement et transfert<\/li>\n\n\n\n<li>Les usines de s\u00e9paration d'air produisent de l'oxyg\u00e8ne liquide, de l'azote liquide et de l'argon liquide \u00e0 des temp\u00e9ratures allant jusqu'\u00e0 -196\u00b0C<\/li>\n\n\n\n<li>Les syst\u00e8mes a\u00e9rospatiaux et de propulsion de fus\u00e9es utilisent de l'hydrog\u00e8ne liquide \u00e0 -254\u00b0C avec de l'oxyg\u00e8ne liquide comme propergols<\/li>\n\n\n\n<li>Les acc\u00e9l\u00e9rateurs de particules utilisent de l'h\u00e9lium liquide pour les aimants supraconducteurs, et les h\u00f4pitaux g\u00e8rent le stockage d'oxyg\u00e8ne liquide \u00e0 grande \u00e9chelle<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">La gamme compl\u00e8te de vannes basse temp\u00e9rature de Xintai pour ces industries, y compris les conceptions \u00e0 boisseau sph\u00e9rique, \u00e0 clapet et \u00e0 soupape, ainsi que les vannes \u00e0 opercule, est disponible dans notre <a href=\"https:\/\/www.xintaivalves.com\/fr\/cryogenic-valve-collection\/\">vanne cryog\u00e9nique<\/a>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/www.xintaivalves.com\/fr\/cryogenic-valve-collection\/\"><img decoding=\"async\" src=\"https:\/\/dbfhaf64fpo53.cloudfront.net\/wp-content\/uploads\/2022\/03\/1-3.jpg\" alt=\"\" style=\"width:278px;height:auto\"\/><\/a><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.xintaivalves.com\/fr\/cryogenic-valve-collection\/\">Collecte de vannes cryog\u00e9niques<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Cryogenic_Gate_Valves_Compare_to_Globe_Ball_and_High-Pressure_Designs\"><\/span><strong>Comment les vannes \u00e0 opercule cryog\u00e9niques se comparent aux conceptions \u00e0 soupape, \u00e0 boisseau sph\u00e9rique et haute pression<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La vanne \u00e0 opercule n'est pas toujours le bon choix pour le service \u00e0 basse temp\u00e9rature. Comprendre o\u00f9 d'autres types conviennent aide \u00e0 affiner la s\u00e9lection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cryogenic_Globe_Valves_and_Flow_Regulation\"><\/span><strong>Vannes \u00e0 soupape cryog\u00e9niques et r\u00e9gulation du d\u00e9bit<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les vannes \u00e0 soupape cryog\u00e9niques conviennent mieux \u00e0 l'\u00e9tranglement et \u00e0 la r\u00e9gulation de d\u00e9bit que les conceptions \u00e0 opercule. Le chemin d'\u00e9coulement interne en forme de S offre un contr\u00f4le pr\u00e9cis mais cr\u00e9e une chute de pression plus \u00e9lev\u00e9e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour les applications d'isolement de grand diam\u00e8tre o\u00f9 le d\u00e9bit direct est plus important que la modulation, la vanne \u00e0 opercule est l'option la plus robuste.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ball_Valves_and_Cold_Flow_Risk\"><\/span><strong>Vannes \u00e0 boisseau sph\u00e9rique et risque de d\u00e9bit \u00e0 froid<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les vannes \u00e0 boisseau sph\u00e9rique sont compactes et \u00e0 action rapide, mais les si\u00e8ges souples se d\u00e9forment de mani\u00e8re permanente sous une pression cryog\u00e9nique soutenue, une condition connue sous le nom de fluage \u00e0 froid.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les vannes \u00e0 opercule sont pr\u00e9f\u00e9r\u00e9es pour les diam\u00e8tres plus grands o\u00f9 le fluage \u00e0 froid est un risque connu et o\u00f9 le co\u00fbt d'une vanne \u00e0 boisseau sph\u00e9rique de grand diam\u00e8tre rend la conception \u00e0 opercule plus pratique.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"High_Pressure_Gate_Valve_Designs\"><\/span><strong>Conceptions de vannes \u00e0 opercule haute pression<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">UN<a href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/gate-valve\/high-pressure-gate-valve-design-uses\/\"> vanne \u00e0 guillotine haute pression<\/a> pour le service industriel standard partage une g\u00e9om\u00e9trie d'opercule et de coin similaire mais manque du chapeau allong\u00e9 et des nuances de mat\u00e9riaux cryog\u00e9niques que le service \u00e0 basse temp\u00e9rature exige.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L'utilisation d'une conception standard haute pression dans des conditions cryog\u00e9niques entra\u00eene une d\u00e9faillance du garnissage et un grippage de la tige, quelle que soit la classe de pression.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_to_Know_Before_Installing_or_Maintaining_a_Cryogenic_Gate_Valve\"><\/span><strong>Ce qu'il faut savoir avant d'installer ou d'entretenir une vanne \u00e0 opercule cryog\u00e9nique<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quelques \u00e9l\u00e9ments qui d\u00e9terminent si la vanne fonctionne comme sp\u00e9cifi\u00e9 en service :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Installer avec la tige verticale et le chapeau allong\u00e9 pointant vers le haut, car l'espace vapeur ne fonctionne que dans cette orientation<\/li>\n\n\n\n<li>Nettoyer soigneusement avant l'installation. L'huile, la graisse ou la contamination par des particules sont tr\u00e8s r\u00e9actives en service oxyg\u00e8ne liquide et cr\u00e9ent un risque d'explosion<\/li>\n\n\n\n<li>Les raccords soud\u00e9s bout \u00e0 bout offrent une meilleure s\u00e9curit\u00e9 contre les fuites que les raccords \u00e0 brides dans les lignes cryog\u00e9niques critiques<\/li>\n\n\n\n<li>Inspecter le garnissage r\u00e9guli\u00e8rement. Le chapeau allong\u00e9 r\u00e9duit consid\u00e9rablement l'usure, mais ne l'\u00e9limine pas<\/li>\n\n\n\n<li>Ne jamais faire fonctionner la vanne en position partiellement ouverte. Cela d\u00e9truit les faces m\u00e9talliques du si\u00e8ge et \u00e9limine l'\u00e9tanch\u00e9it\u00e9 bulle \u00e0 bulle<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Evaluate_Cryogenic_Gate_Valve_Manufacturers_Before_You_Order\"><\/span><strong>Comment \u00e9valuer les fabricants de vannes \u00e0 opercule cryog\u00e9niques avant de commander<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La fabrication de vannes cryog\u00e9niques exige une ex\u00e9cution pr\u00e9cise \u00e0 chaque \u00e9tape, de la certification des mat\u00e9riaux et de la g\u00e9om\u00e9trie du chapeau allong\u00e9 au nettoyage et aux essais de pression.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Des lacunes dans l'une de ces \u00e9tapes se manifestent par des fuites ou une d\u00e9faillance op\u00e9rationnelle en service.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les fabricants r\u00e9put\u00e9s de vannes \u00e0 opercule cryog\u00e9niques produisent selon les normes BS 6364, MSS SP-134 et ASME B16.34. Des conceptions comme les vannes \u00e0 opercule cryog\u00e9niques Star0044 sont sp\u00e9cifi\u00e9es dans les projets critiques car leur documentation de test et leurs normes de construction r\u00e9pondent aux exigences d'\u00e9tanch\u00e9it\u00e9 des services \u00e0 basse temp\u00e9rature.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour un aper\u00e7u d\u00e9taill\u00e9 de ce qui distingue les principaux fournisseurs, notre <a href=\"https:\/\/www.xintaivalves.com\/fr\/blog\/top-5-industrial-cryogenic-valve-manufacturers-in-the-world\/\">guide des meilleurs fabricants de vannes cryog\u00e9niques industrielles<\/a> couvre ce qu'il faut v\u00e9rifier avant de passer une commande.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Xintai_Cryogenic_Gate_Valves\"><\/span><strong>Vannes \u00e0 opercule cryog\u00e9niques Xintai<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"wp-block-cover is-light\" style=\"min-height:237px;aspect-ratio:unset;\"><img decoding=\"async\" width=\"3000\" height=\"2000\" class=\"wp-block-cover__image-background wp-image-7802\" alt=\"\" src=\"https:\/\/xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001.webp\" data-object-fit=\"cover\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001.webp 3000w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-300x200.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-1024x683.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-768x512.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-1536x1024.webp 1536w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-2048x1365.webp 2048w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-18x12.webp 18w\" sizes=\"(max-width: 3000px) 100vw, 3000px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#e8e8e8\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-black-color has-text-color has-link-color wp-elements-10176f1e50fccd365deb8f276774936a wp-block-paragraph\" style=\"font-size:27px\"><strong>Personnalisez la vanne parfaite pour votre projet ! Obtenez un devis et explorez nos options personnalis\u00e9es.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-left is-layout-flex wp-container-core-buttons-is-layout-63375db1 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-fill\"><a class=\"wp-block-button__link has-black-color has-text-color has-background has-link-color has-extra-small-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/www.xintaivalves.com\/fr\/industrial-valve-manufacturer\/\" style=\"border-radius:100px;background-color:#d70c19\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Explorez les solutions de vannes<\/strong><\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le service cryog\u00e9nique ne laisse aucune marge pour une vanne qui serait presque correcte. Xintai Valve Group fournit les industries du p\u00e9trole et du gaz, du GNL, de la p\u00e9trochimie, de la production d'\u00e9nergie et de la d\u00e9fense depuis 1998, avec des projets incluant Petronas, Petrobras, Saudi Aramco, PARCO et Repsol YPF dans plus de 50 pays.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chaque vanne \u00e0 opercule cryog\u00e9nique quitte l'usine avec un rapport d'inspection complet couvrant les contr\u00f4les dimensionnels, les essais de pression selon API 598 et la v\u00e9rification des mat\u00e9riaux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une soci\u00e9t\u00e9 d'inspection ind\u00e9pendante effectue une deuxi\u00e8me v\u00e9rification avant l'exp\u00e9dition, s\u00e9par\u00e9ment de l'\u00e9quipe qualit\u00e9 interne, car le service cryog\u00e9nique ne tol\u00e8re aucune ambigu\u00eft\u00e9 sur les performances d'\u00e9tanch\u00e9it\u00e9. Les certifications couvrent API No. 6D-1778, ISO 9001:2015, CE et OHSAS 18001.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Disponible du DN32 au DN1400, de CL150 \u00e0 CL2500, avec des options de raccordement \u00e0 brides, \u00e0 souder bout \u00e0 bout, \u00e0 souder embo\u00eetement et \u00e0 collier. Les mat\u00e9riaux incluent 304, 316L, C95800, C63200 et l'alliage de titane, avec des options pour le service acide NACE MR0175, les \u00e9missions fugitives ISO 15848 et la s\u00e9curit\u00e9 incendie API 607.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les sp\u00e9cifications compl\u00e8tes et les options de configuration sont disponibles sur notre page produit de vannes \u00e0 opercule cryog\u00e9niques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si vous travaillez sur une sp\u00e9cification de vanne \u00e0 opercule cryog\u00e9nique, <a href=\"https:\/\/www.xintaivalves.com\/fr\/contact\/\">contactez notre \u00e9quipe<\/a>, et nous examinerons les d\u00e9tails avec vous.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>A cryogenic gate valve is a specialized industrial valve built for extreme low-temperature service, operating reliably down to -196\u00b0C and below. Standard valves fail in these conditions because the metal becomes brittle, and thermal contraction causes seals to leak. What Makes Cryogenic Service Different from Standard Valve Applications Most industrial valves are designed for moderate [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":15081,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[238],"tags":[],"class_list":["post-15079","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate-valve"],"_links":{"self":[{"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/posts\/15079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/comments?post=15079"}],"version-history":[{"count":4,"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/posts\/15079\/revisions"}],"predecessor-version":[{"id":15107,"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/posts\/15079\/revisions\/15107"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/media\/15081"}],"wp:attachment":[{"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/media?parent=15079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/categories?post=15079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/fr\/wp-json\/wp\/v2\/tags?post=15079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}