{"id":16147,"date":"2022-06-19T14:16:02","date_gmt":"2022-06-19T14:16:02","guid":{"rendered":"https:\/\/zecovalve.com\/?post_type=product&#038;p=16147"},"modified":"2023-06-07T07:02:42","modified_gmt":"2023-06-07T07:02:42","slug":"top-entry-ball-valve","status":"publish","type":"product","link":"https:\/\/zecovalve.com\/fr\/produit\/top-entry-ball-valve","title":{"rendered":"Robinet \u00e0 boisseau sph\u00e9rique \u00e0 entr\u00e9e par le haut"},"content":{"rendered":"<p>En raison de la nature particuli\u00e8re des conditions environnementales et des conditions de fonctionnement du proc\u00e9d\u00e9, un robinet \u00e0 tournant sph\u00e9rique classique n&#039;est pas suffisant et le syst\u00e8me exige des performances \u00e9lev\u00e9es. Gr\u00e2ce \u00e0 la structure d&#039;entr\u00e9e sup\u00e9rieure, il n&#039;est pas n\u00e9cessaire de retirer le robinet \u00e0 tournant sph\u00e9rique de la conduite lorsque le si\u00e8ge est entretenu ou remplac\u00e9, il est donc facile de v\u00e9rifier et d&#039;entretenir le robinet \u00e0 tournant sph\u00e9rique.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image alignnone size-medium wp-image-16148\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" class=\"wp-image-16148\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-300x225.jpg\" alt=\"Robinet \u00e0 boisseau sph\u00e9rique \u00e0 entr\u00e9e par le haut\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-300x225.jpg 300w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-768x576.jpg 768w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-600x450.jpg 600w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\r\n\r\n\r\n<div class=\"gb-button-wrapper gb-button-wrapper-6d8495a3\">\r\n\r\n\r\n<p><a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"https:\/\/zecovalve.com\/fr\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>OBTENEZ LE MEILLEUR PRIX DU VANNE \u00c0 BILLE D&#039;ENTR\u00c9E<\/strong><\/a><\/p>\r\n<\/div>\r\n\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-top-entry-ball-valve\">Qu&#039;est-ce qu&#039;un robinet \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure\u00a0?<\/h2>\r\n\r\n\r\n\r\n<p>Les vannes \u00e0 bille \u00e0 entr\u00e9e sup\u00e9rieure sont les vannes qui assemblent la bille \u00e0 partir de l&#039;extr\u00e9mit\u00e9 sup\u00e9rieure. C&#039;est assez similaire \u00e0 un robinet \u00e0 soupape qui a un corps et un capuchon, sauf que la partie garniture utilise un type \u00e0 bille. Il est constitu\u00e9 d&#039;une seule entit\u00e9. En r\u00e8gle g\u00e9n\u00e9rale, les robinets \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure sont en m\u00e9tal moul\u00e9.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Construction du corps du robinet \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>La conception du capot du corps pr\u00e9sente une construction boulonn\u00e9e et son dimensionnement est conforme aux exigences donn\u00e9es dans la norme ASME VIII Div. 1<\/li>\r\n<li>La construction boulonn\u00e9e permet un d\u00e9montage en ligne pour les inspections et les r\u00e9parations potentielles<\/li>\r\n<li>Le retrait du chapeau de la vanne permet un acc\u00e8s libre \u00e0 la bille et aux si\u00e8ges, qui peuvent \u00eatre retir\u00e9s simultan\u00e9ment sans avoir besoin d&#039;outils de maintenance sp\u00e9ciaux.<\/li>\r\n<li>Apr\u00e8s la maintenance, l&#039;int\u00e9grit\u00e9 de la surface d&#039;appui peut \u00eatre \u00e9valu\u00e9e en mettant sous pression la cavit\u00e9 du corps uniquement, avant toute repressurisation du pipeline (conception DPE standard)<\/li>\r\n<li>Drain corporel pr\u00e9vu dans la partie la plus basse de la cavit\u00e9 corporelle, dot\u00e9 d&#039;une vanne de vidange NPT avec un bouchon de s\u00e9curit\u00e9<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Conception du robinet \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Entr\u00e9e sup\u00e9rieure<\/li>\r\n<li>Mont\u00e9 sur tourillon<\/li>\r\n<li>Commande par levier ou engrenage<\/li>\r\n<li>Monoplace avec si\u00e8ge DPE<\/li>\r\n<li>Joint de tige sans graphite r\u00e9sistant au feu<\/li>\r\n<li>Connexion corps-chapeau \u00e0 double \u00e9tanch\u00e9it\u00e9<\/li>\r\n<li>Extr\u00e9mit\u00e9s soud\u00e9es bout \u00e0 bout allong\u00e9es<\/li>\r\n<li>Brides soud\u00e9es en option avec contr\u00f4le radiographique pour les constructions soud\u00e9es<\/li>\r\n<li>Tests de production selon EN 12266-1, API 598, API 6D<\/li>\r\n<li>Tests cryog\u00e9niques (sur demande) : BS 6364<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Comment fonctionne un robinet \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure\u00a0?<\/h2>\r\n\r\n\r\n\r\n<p>Les robinets \u00e0 tournant sph\u00e9rique ont une bille soutenue en bas par un tourillon. Lorsque l&#039;al\u00e9sage est positionn\u00e9 en direction du conduit, la vanne est en position ouverte, laissant passer le fluide. La tige commence \u00e0 descendre, et \u00e0 cause des canaux usin\u00e9s dessus, elle se tord de 90\u00b0, provoquant la bille pour tourner la m\u00eame chose. Ensuite, certains canaux sont usin\u00e9s directement et la tige ne peut pas simplement descendre.<\/p>\r\n\r\n\r\n\r\n<p>Dans ce cas, du fait de la surface inclin\u00e9e, la tige entra\u00eene la bille vers le tourillon inf\u00e9rieur et le si\u00e8ge. La balle ne touche le si\u00e8ge que dans cette position et il n&#039;y a aucune pression pendant le reste du mouvement.<\/p>\r\n\r\n\r\n\r\n<p>Le robinet \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure est disponible en deux configurations principales\u00a0:<\/p>\r\n\r\n\r\n\r\n<p>Passage int\u00e9gral\u00a0: La taille de la garniture est la m\u00eame pour le conduit. Dans ce cas, la vanne est id\u00e9ale pour <a href=\"https:\/\/zecovalve.com\/fr\/understanding-pigging-and-pig-valves-in-industrial-pipelines-zeco-valve-blog.html\/\" data-internallinksmanager029f6b8e52c=\"12\" title=\"raclage\" target=\"_blank\" rel=\"noopener\">raclage<\/a>. Al\u00e9sage r\u00e9duit\u00a0: La hauteur de la garniture est inf\u00e9rieure \u00e0 la taille du pipeline.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-features-of-top-entry-ball-valves\">Caract\u00e9ristiques des robinets \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Assise souple, en m\u00e9tal ou en mat\u00e9riau composite.<\/li>\r\n<li>Fermeture \u00e9tanche bidirectionnelle.<\/li>\r\n<li>Double blocage et purge.<\/li>\r\n<li>R\u00e9sistant au feu et test\u00e9 au feu.<\/li>\r\n<li>Conception \u00e0 faible couple de fonctionnement.<\/li>\r\n<li>Large gamme de mat\u00e9riaux et de tailles.<\/li>\r\n<li>Si\u00e8ges \u00e0 ressorts.<\/li>\r\n<li>Tourillon mont\u00e9 avec si\u00e8ges sous tension.<\/li>\r\n<li>Conception de tige anti-\u00e9ruption.<\/li>\r\n<li>Convient pour une installation hors sol ou souterraine.<\/li>\r\n<li>Assise souple, en m\u00e9tal ou en mat\u00e9riau composite.<\/li>\r\n<li>Corps moul\u00e9 l\u00e9ger.<\/li>\r\n<li>Arr\u00eat de classe V.<\/li>\r\n<li>Garniture de tige en graphite.<\/li>\r\n<li>Conception forg\u00e9e.<\/li>\r\n<li>Pas de r\u00e9gulation du d\u00e9bit de vapeur.<\/li>\r\n<li>Profil conique pour minimiser les vibrations induites par l&#039;\u00e9coulement.<\/li>\r\n<li>Buse de pulv\u00e9risation variable.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Applications des robinets \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Fluides corrosifs<\/li>\r\n<li>Gazoducs<\/li>\r\n<li>Ol\u00e9oducs<\/li>\r\n<li>Raffineries<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-material-of-top-entry-ball-valve\">Mat\u00e9riau du robinet \u00e0 tournant sph\u00e9rique \u00e0 entr\u00e9e sup\u00e9rieure\u00a0:<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>Non<\/td>\r\n<td>Partie<\/td>\r\n<td>Mat\u00e9riau<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>1<\/td>\r\n<td>Corps<\/td>\r\n<td>ASTM A351 CF8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>2<\/td>\r\n<td>Bonnet<\/td>\r\n<td>ASTM A351 CF8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>3<\/td>\r\n<td>Boule<\/td>\r\n<td>ASTM A182 F316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>4<\/td>\r\n<td>Si\u00e8ge<\/td>\r\n<td>ASTM A182 F316 + DEVLON<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>5<\/td>\r\n<td>Tige<\/td>\r\n<td>ASTM A276 316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>6<\/td>\r\n<td>Dispositif antistatique<\/td>\r\n<td>SS316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>7<\/td>\r\n<td>Joint d'\u00e9tanch\u00e9it\u00e9<\/td>\r\n<td>Graphite + SS316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>8<\/td>\r\n<td>Boulon<\/td>\r\n<td>ASTM A193 B8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>9<\/td>\r\n<td>\u00c9crou<\/td>\r\n<td>ASTM A194 8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>10<\/td>\r\n<td>Joint torique<\/td>\r\n<td>Viton A<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>11<\/td>\r\n<td>Engrenage<\/td>\r\n<td>Assembl\u00e9e<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>","protected":false},"excerpt":{"rendered":"<p>En raison de la nature particuli\u00e8re des conditions environnementales et des conditions de fonctionnement du proc\u00e9d\u00e9, un robinet \u00e0 tournant sph\u00e9rique classique n&#039;est pas suffisant\u2026 <a title=\"Robinet \u00e0 boisseau sph\u00e9rique \u00e0 entr\u00e9e par le haut\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/fr\/produit\/top-entry-ball-valve\" aria-label=\"Plus sur Top Entry Ball Valve\">Lire plus<\/a><\/p>","protected":false},"featured_media":27852,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":""},"product_cat":[2047,2459],"product_tag":[3896,3913],"class_list":["post-16147","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-ball-valve","product_cat-ball-valve-by-form","product_tag-flanged-ball-valve","product_tag-full-port-ball-valve","sales-flash-overlay","woocommerce-text-align-center","woocommerce-image-align-center","do-quantity-buttons"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/Top-Entry-Ball-Valve-1.jpg",800,600,false],"author_info":[],"comment_info":0,"taxonomy_info":{"product_cat":[{"value":2047,"label":"Ball Valve"},{"value":2459,"label":"Ball Valve By Form"}],"product_tag":[{"value":3896,"label":"Flanged Ball Valve"},{"value":3913,"label":"Full Port Ball Valve"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - 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