{"id":45764,"date":"2022-05-20T10:53:26","date_gmt":"2022-05-20T10:53:26","guid":{"rendered":"https:\/\/www.fhtvalves.com\/vannes-a-boule-flottantes-metal-metal\/"},"modified":"2026-04-23T08:00:17","modified_gmt":"2026-04-23T08:00:17","slug":"vannes-a-boule-flottantes-metal-metal","status":"publish","type":"page","link":"https:\/\/www.fhtvalves.com\/fr\/vannes-a-boule-flottantes-metal-metal\/","title":{"rendered":"Vannes \u00e0 boule flottantes m\u00e9tal-m\u00e9tal"},"content":{"rendered":"

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Vannes \u00e0 boule flottantes m\u00e9tal-m\u00e9tal<\/h1>\n

Vannes \u00e0 boule industrielles<\/h2>\n

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Les vannes \u00e0 boule flottante sont actionn\u00e9es par un axe reli\u00e9 \u00e0 la partie sup\u00e9rieure de la boule et la font pivoter de 90 degr\u00e9s <\/strong>(ce qu’on appelle un quart de tour). \u00c0 mesure que la boule pivote, le passage s’ouvre ou se ferme, lib\u00e9rant ou arr\u00eatant l’\u00e9coulement du fluide. Lorsque la bille tourne sur son axe, la pression du flux pousse la bille contre son si\u00e8ge en aval, cr\u00e9ant ainsi un joint \u00e9tanche. Par cons\u00e9quent, les vannes \u00e0 bille flottante peuvent ne pas assurer une \u00e9tanch\u00e9it\u00e9 aussi efficace dans les applications \u00e0 tr\u00e8s basse pression apr\u00e8s une certaine usure du si\u00e8ge. En effet, la pression peut ne pas \u00eatre suffisante pour pousser la bille contre le si\u00e8ge en aval afin de cr\u00e9er un joint \u00e9tanche. Cependant, dans la plupart des applications, la pression en aval est suffisante pour maintenir une \u00e9tanch\u00e9it\u00e9 herm\u00e9tique bien apr\u00e8s que les si\u00e8ges aient commenc\u00e9 \u00e0 s’user.<\/strong><\/p>\n

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\r\n \"v\u00e1lvula\r\n \t\t<\/div>\t\r\n\t\t \t\t \t\t \r\n\t\t \t\t \t\r\n\t <\/div>\r\n\t <\/div>\r\n\t <\/div>\r\n\t[\/et_pb_code][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” header_3_font=”Jost||||||||” header_3_text_color=”#000000″ header_3_font_size=”27px” global_colors_info=”{}”]<\/p>\n

Si\u00e8ge en m\u00e9tal<\/b><\/h3>\n

Les si\u00e8ges m\u00e9talliques conviennent aux environnements et aux produits corrosifs, ainsi qu’aux temp\u00e9ratures \u00e9lev\u00e9es. Ils sont \u00e9galement adapt\u00e9s en pr\u00e9sence de particules solides en suspension. L’alliage de cuivre, par exemple, est un mat\u00e9riau adapt\u00e9 aux vannes \u00e0 basse pression. Les alliages \u00e0 base de nickel sont souvent le choix id\u00e9al pour les milieux corrosifs. Selon le type de mat\u00e9riau, ces vannes peuvent g\u00e9n\u00e9ralement supporter des conditions plus difficiles que les vannes \u00e0 si\u00e8ge souple, notamment les acides, la chaleur, les abrasifs, les chocs hydrauliques, l’\u00e9rosion, la corrosion et la pression.<\/strong> <\/p>\n

Les vannes \u00e0 si\u00e8ge m\u00e9tallique<\/strong><\/a> co\u00fbtent g\u00e9n\u00e9ralement plus cher que les soupapes \u00e0 si\u00e8ge souple, mais elles peuvent aussi pr\u00e9senter davantage de fuites qu’une vanne \u00e0 si\u00e8ge souple.<\/p>\n

Dans notre catalogue de vannes \u00e0 boule<\/a><\/strong>, vous d\u00e9couvrirez notre large gamme de produits.<\/p>\n

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