{"id":29,"date":"2022-01-14T08:19:56","date_gmt":"2022-01-14T08:19:56","guid":{"rendered":"https:\/\/www.pansvalve.com\/?page_id=29"},"modified":"2024-09-19T15:31:52","modified_gmt":"2024-09-19T07:31:52","slug":"collection","status":"publish","type":"page","link":"https:\/\/www.pansvalve.com\/fr\/collection\/","title":{"rendered":"Collection"},"content":{"rendered":"
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Comment fonctionnent les robinets \u00e0 tournant sph\u00e9rique ?<\/strong><\/h2>\n\n\n\n

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Les robinets \u00e0 tournant sph\u00e9rique utilisent des billes creuses qui permettent aux \u00e9coulements de les traverser lorsqu'ils sont ouverts et de les isoler lorsqu'ils se ferment. Les billes sont entra\u00een\u00e9es \u00e0 l'aide de broches qui s'ins\u00e8rent dans les fentes frais\u00e9es dans les billes creuses, qui sont \u00e0 leur tour actionn\u00e9es par des leviers pour fermer et ouvrir les billes. Les axes des vannes \u00e0 bille sont encastr\u00e9s dans les cols des vannes et sont scell\u00e9s \u00e0 l'aide d'un large \u00e9ventail de joints de col\u00a0; cela \u00e9vite les fuites et, de plus, les billes sont prises en sandwich entre les si\u00e8ges bille\/corps pour garantir une \u00e9tanch\u00e9it\u00e9 positive et absolue.<\/p>\n<\/div>\n\n\n\n

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Fonction du circuit des vannes \u00e0 bille<\/strong><\/h2>\n\n\n\n

Les robinets \u00e0 tournant sph\u00e9rique peuvent comporter 2 (2 voies), 3 (3 voies) et dans certains cas 4 ports (4 voies). La plupart des vannes sont \u00e0 2 voies et sont actionn\u00e9es manuellement \u00e0 l'aide d'un levier ; ce levier est align\u00e9 avec le tuyau du robinet \u00e0 bille chaque fois que le robinet est ouvert. Une fois ferm\u00e9, le levier est perpendiculaire au tuyau.<\/p>\n\n\n\n

Le d\u00e9bit dans les vannes \u00e0 bille provient simplement de la sortie et de l'entr\u00e9e des vannes \u00e0 2 voies. Les vannes \u00e0 commande manuelle peuvent \u00eatre ferm\u00e9es rapidement, ce qui signifie qu'il existe un risque de coup de b\u00e9lier avec des fluides \u00e0 \u00e9coulement rapide. D'autres vannes sont \u00e9quip\u00e9es de transmissions. Les vannes \u00e0 bille \u00e0 3 voies ont des al\u00e9sages en forme de T ou de L, qui affectent les directions d'\u00e9coulement\u00a0; cela se traduit par diff\u00e9rentes fonctions de circuit, telles que le m\u00e9lange et la distribution des flux dans diff\u00e9rentes directions.<\/p>\n\n\n\n

Alternativement, vous pouvez utiliser des vannes \u00e0 bille automatis\u00e9es\u00a0; ceux-ci sont \u00e9quip\u00e9s d'actionneurs pneumatiques ou \u00e9lectriques. Ils offrent plus de commodit\u00e9 puisqu\u2019ils peuvent \u00eatre command\u00e9s \u00e0 distance.<\/p>\n<\/div>\n\n\n\n

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Fonctionnement des robinets \u00e0 tournant sph\u00e9rique<\/strong><\/h2>\n\n\n\n

Lorsque les billes s'ouvrent et se ferment entre les si\u00e8ges, elles effectuent des mouvements d'essuyage et \u00e9liminent toutes les particules en suspension des surfaces des billes. Il est important de noter que les solides grossiers endommagent les surfaces et les si\u00e8ges des billes, ce qui finit par entra\u00eener des fuites. Les mat\u00e9riaux fibreux, avares et solides aident \u00e0 emp\u00eacher les boules de se fermer. La configuration de robinet \u00e0 tournant sph\u00e9rique la plus r\u00e9pandue est la conception \u00e0 2 voies\u00a0; il facilite le passage des flux depuis les entr\u00e9es vers les sorties des vannes. Les vannes \u00e0 bille \u00e0 3 et 4 voies permettent aux flux de se d\u00e9placer dans plusieurs directions.<\/p>\n<\/div>\n\n\n\n

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How Does Ball Valves Work? Ball valves use hollow balls that allow flows through them when they are open and isolate when they close. The balls are driven using spindles that fit into the slots milled into the hollow balls, which are in turn operated by levers to close and open the balls. The ball […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-29","page","type-page","status-publish","hentry"],"yoast_head":"\nPANS: Quality Valve Collection for All Needs<\/title>\n<meta name=\"description\" content=\"PANS offers a comprehensive collection of valves tailored to various applications. 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