{"id":17005,"date":"2022-06-25T13:05:22","date_gmt":"2022-06-25T13:05:22","guid":{"rendered":"https:\/\/zecovalve.com\/?p=17005"},"modified":"2022-09-07T02:30:09","modified_gmt":"2022-09-07T02:30:09","slug":"comparison-of-concentric-butterfly-valves-double-offset-butterfly-valves-and-triple-offset-butterfly-valves","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/fr\/comparison-of-concentric-butterfly-valves-double-offset-butterfly-valves-and-triple-offset-butterfly-valves.html","title":{"rendered":"Comparaison des vannes papillon concentriques, des vannes papillon \u00e0 double excentration et des vannes papillon \u00e0 triple excentration"},"content":{"rendered":"<p>Ces derni\u00e8res ann\u00e9es, les vannes papillon excentriques \u00e0 si\u00e8ge m\u00e9tallique ont concurrenc\u00e9 les vannes industrielles plus traditionnelles telles que les vannes \u00e0 soupape et \u00e0 bille pour les applications critiques. Cependant, m\u00eame si de nombreuses personnes savent d\u00e9j\u00e0 comment fonctionne une vanne papillon, une grande partie de la confusion r\u00e9side dans la diff\u00e9rence entre ces vannes excentriques et les applications qui conviennent \u00e0 chacune.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Qu&#039;est-ce qu&#039;une vanne papillon concentrique ?<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"330\" height=\"300\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/wafer-butterfly-valve-1.jpg\" alt=\"Vanne papillon \u00e0 Wafer\" class=\"wp-image-17037\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/wafer-butterfly-valve-1.jpg 330w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/wafer-butterfly-valve-1-300x273.jpg 300w\" sizes=\"auto, (max-width: 330px) 100vw, 330px\" \/><\/figure>\n<\/div>\n\n\n<p>\u00c9galement connue sous le nom de conception concentrique, elle est courante dans les vannes papillon \u00e0 \u00ab si\u00e8ge \u00e9lastique \u00bb ou \u00e0 \u00ab si\u00e8ge en caoutchouc \u00bb de service g\u00e9n\u00e9ral. La tige et le disque sont centr\u00e9s dans le si\u00e8ge de la vanne, tous centr\u00e9s dans le corps de la vanne. Le disque est en contact permanent avec le si\u00e8ge.<\/p>\n\n\n\n<p>Un avantage de cette vanne est que le fluide traversant la vanne n&#039;entrera pas en contact avec le corps, puisque le si\u00e8ge est construit comme un manchon ou une cartouche \u00e0 l&#039;int\u00e9rieur du corps.<\/p>\n\n\n\n<p>Les vannes papillon concentriques sont utilis\u00e9es dans les applications liquides et gazeuses de base et sp\u00e9cialis\u00e9es jusqu&#039;\u00e0 200 PSI et jusqu&#039;\u00e0 400 degr\u00e9s F. La vanne papillon \u00e0 d\u00e9calage nul peut g\u00e9rer des produits chimiques, des rev\u00eatements, des aliments, certains solides et des applications abrasives. \u00a0<\/p>\n\n\n\n<p>La vanne papillon concentrique est disponible en fonte \u00e0 rev\u00eatement \u00e9poxy et en acier inoxydable avec plusieurs mat\u00e9riaux de si\u00e8ge tels que Buna, EPDM, VITON, T\u00e9flon, caoutchouc naturel et autres.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/20211225095254-61c6e9f6888f6.jpg\" alt=\"\" class=\"wp-image-200\" width=\"150\" height=\"211\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/20211225095254-61c6e9f6888f6.jpg 600w, https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/20211225095254-61c6e9f6888f6-213x300.jpg 213w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-double-offset-butterfly-valve\">Qu&#039;est-ce qu&#039;une vanne papillon \u00e0 double excentration\u00a0?<\/h2>\n\n\n\n<p>La vanne papillon excentrique double peut \u00e9galement \u00eatre appel\u00e9e vanne papillon haute performance ou vanne papillon double excentrique. Cette vanne convient aux fluides plus \u00e9pais \u00e0 haute pression car sa conception ne permet pas trop de contact avec le disque et le si\u00e8ge.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Caract\u00e9ristiques de la vanne papillon \u00e0 double excentration<\/h2>\n\n\n\n<p>Le solde de cette valve se trouve dans la tige plac\u00e9e derri\u00e8re le disque circulaire. Il permet au disque de s&#039;ajuster automatiquement au centre, garantissant ainsi une \u00e9tanch\u00e9it\u00e9 parfaite. M\u00eame lorsque la vanne est compl\u00e8tement ouverte, la vanne ne touche pas le si\u00e8ge souple, garantissant ainsi une dur\u00e9e de vie plus longue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu&#039;est-ce qu&#039;une vanne papillon triple excentration\u00a0?<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-768x1024.jpg\" alt=\"Vanne Papillon Triple Offset 16&#039;&#039; Pr\u00eate Pour La Livraison - Actualit\u00e9s - Zeco Valve | Fournisseur de vanne papillon API\" class=\"wp-image-15337\" width=\"192\" height=\"256\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-768x1024.jpg 768w, https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-scaled-600x800.jpg 600w, https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-225x300.jpg 225w, https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-1152x1536.jpg 1152w, https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-1536x2048.jpg 1536w, https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-scaled.jpg 1920w\" sizes=\"auto, (max-width: 192px) 100vw, 192px\" \/><\/figure>\n<\/div>\n\n\n<p>La vanne papillon triple d\u00e9port int\u00e8gre les deux points de d\u00e9port du double, mais elle poss\u00e8de \u00e9galement un troisi\u00e8me point de d\u00e9port. En ce qui concerne cette fois les points d&#039;\u00e9tanch\u00e9it\u00e9 plut\u00f4t que l&#039;arbre, le point d&#039;\u00e9tanch\u00e9it\u00e9 sur le disque et le si\u00e8ge sont tous deux usin\u00e9s selon un profil conique d\u00e9cal\u00e9. Cela lui permet de fonctionner pleinement sans aucun contact jusqu&#039;au point de fermeture compl\u00e8te comme but\u00e9e m\u00e9canique. Les deux composants d&#039;\u00e9tanch\u00e9it\u00e9 peuvent donc \u00eatre r\u00e9alis\u00e9s en m\u00e9tal sans qu&#039;il soit n\u00e9cessaire d&#039;utiliser un \u00e9l\u00e9ment \u00e9lastom\u00e8re.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Caract\u00e9ristiques de la vanne papillon \u00e0 triple excentration<\/h2>\n\n\n\n<p>En tant que vanne papillon, elle appartient \u00e9galement \u00e0 la famille des quarts. Il est \u00e9galement l\u00e9ger et facile \u00e0 utiliser. L\u2019installation est \u00e9galement un jeu d\u2019enfant puisqu\u2019il faut moins de renforts de tuyaux. Le remplacement des bagues de si\u00e8ge est \u00e9galement facile car cette vanne est \u00e0 entr\u00e9e par le haut.<\/p>\n\n\n\n<p>La vanne papillon \u00e0 triple excentration a un faible couple, il n&#039;est donc pas n\u00e9cessaire d&#039;avoir des vannes plus grandes. Cela \u00e9tant dit, cela signifie des co\u00fbts d\u2019\u00e9pargne plus \u00e9lev\u00e9s. Cette vanne a une fermeture sans fuite aux deux extr\u00e9mit\u00e9s.<\/p>\n\n\n\n<p>L&#039;introduction de si\u00e8ges souples augmente la valeur des vannes. En plus d&#039;\u00eatre r\u00e9sistantes au feu gr\u00e2ce aux si\u00e8ges m\u00e9talliques situ\u00e9s sous les si\u00e8ges souples, les vannes peuvent d\u00e9sormais s&#039;auto-centrer gr\u00e2ce au mat\u00e9riau du si\u00e8ge en \u00e9lastom\u00e8re.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">Balises associ\u00e9es :<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/\">Soupape ZECO<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/introduction-of-epdm-nbr-butterfly-valve-seat-industrial-valve-information-news-zeco-valve.html\/\">Robinet \u00e0 papillon NBR<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/what-is-an-axial-flow-silent-check-valve.html\/\">Qu'est-ce qu'un clapet anti-retour axial ?<\/a>\n\n<\/div>\n\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/difference-between-gate-valve-and-butterfly-valve.html\/\">Diff\u00e9rence entre la vanne \u00e0 vanne et la vanne papillon<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/history-of-automatic-control-valve-zeco-valve-industrial-valve-manufacturer.html\/\">Que sont les vannes de r\u00e9gulation automatique ?<\/a>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Ces derni\u00e8res ann\u00e9es, les vannes papillon excentriques \u00e0 si\u00e8ge m\u00e9tallique ont concurrenc\u00e9 les vannes industrielles plus traditionnelles comme les vannes \u00e0 soupape et \u00e0 bille pour des besoins critiques\u2026 <a title=\"Comparaison des vannes papillon concentriques, des vannes papillon \u00e0 double excentration et des vannes papillon \u00e0 triple excentration\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/fr\/comparison-of-concentric-butterfly-valves-double-offset-butterfly-valves-and-triple-offset-butterfly-valves.html\" aria-label=\"Plus sur Comparaison des vannes papillon concentriques, des vannes papillon double excentration et des vannes papillon triple excentration\">Lire plus<\/a><\/p>","protected":false},"author":2,"featured_media":15337,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[2210],"tags":[2443,1881,3190,3657,2519,2211,2184],"class_list":["post-17005","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-butterfly-valve","tag-butterfly-valve-manufacturer","tag-butterfly-valve-wikipedia","tag-butterfly-valves-manufacturer","tag-center-line-butterfly-valve","tag-concentric-butterfly-valve","tag-double-offset-butterfly-valve","tag-triple-offset-butterfly-valve","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2021\/12\/\u51f8\u8033\u8776\u9600C95800-1-768x1024.jpg",768,1024,true],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/fr\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":2210,"name":"Butterfly Valve","slug":"butterfly-valve","term_group":0,"term_taxonomy_id":2210,"taxonomy":"category","description":"","parent":0,"count":49,"filter":"raw","cat_ID":2210,"category_count":49,"category_description":"","cat_name":"Butterfly Valve","category_nicename":"butterfly-valve","category_parent":0}],"tag_info":[{"term_id":2443,"name":"Butterfly Valve Manufacturer","slug":"butterfly-valve-manufacturer","term_group":0,"term_taxonomy_id":2443,"taxonomy":"post_tag","description":"","parent":0,"count":3,"filter":"raw"},{"term_id":1881,"name":"Butterfly Valve Wikipedia","slug":"butterfly-valve-wikipedia","term_group":0,"term_taxonomy_id":1881,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_49a87c-f7\"} \/-->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-a-butterfly-valve\">What is a Butterfly Valve?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nButterfly Valve is a valve that can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of Ball Valves, which allows for quick shut-off. Butterfly valves are generally favored because they are lower in cost than other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"https:\/\/zecovalve.com\/contact\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET BUTTERFLY VALVE PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Types of Butterfly Valves<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li><strong>Concentric Butterfly Valve<\/strong>\r\n<ul>\r\n \t<li>The most basic design of a butterfly valve is a centric or concentric butterfly valve. The stem passes through the disc\u2019s centerline, and the seat is the inside diameter periphery of the valve body (Figure 4 on the left). This zero-offset valve design is known as resilient-seated because efficient sealing relies on the flexibility of the rubber seat. When closing, the disc first comes into contact with the seat at around 85\u00b0 during a 90\u00b0 rotation. Concentric butterfly valves are suitable for low-pressure ranges.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Double Offset Butterfly Valve<\/strong>\r\n<ul>\r\n \t<li>This popular valve is also known as a high-performance butterfly valve. This valve has two stems offset from the center. This creates a cam action during the application's process.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Triple Offset Butterfly Valve<\/strong>\r\n<ul>\r\n \t<li>Triple Offset Butterfly Valves are essential in applications where a bubble-tight shut-off is required. In some applications, bubble-tight shut-off cannot be achieved using double offset butterfly valves. Some applications do not lend themselves well to traditional butterfly valves, for example, applications involving harsh chemicals or media with small particles prone to clogging valves and pipelines.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Gate Valve vs Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nButterfly valves are comparatively more extensively used in large sizes compared to gate valves. Because butterfly valves open and close quickly and can be frequently operated, they are ideal for applications that require quick opening and closing, especially for emergency shutoffs.\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":11,"filter":"raw"},{"term_id":3190,"name":"Butterfly Valves Manufacturer","slug":"butterfly-valves-manufacturer","term_group":0,"term_taxonomy_id":3190,"taxonomy":"post_tag","description":"<!-- wp:paragraph -->\r\n<p>Handle Wafer Butterfly Valve Price List 8 inch butterfly valve Price in China<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>The price of Handle Wafer Butterfly Valve Price List 8 Inch Butterfly Valve from China is based on the bulk order quantity. ZECO Valve offers flexible prices for Butterfly Valves variations depending on the importing country and quantity.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>China Butterfly Valve with Handles Pricelist<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>Different materials, bores, and pressures determine the price of butterfly valves, if you need detailed information about China Butterfly Valve with Handles Pricelist, please contact ZECO VALVE<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"https:\/\/zecovalve.com\/contact\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET CHINA BUTTERFLY VALVE WITH HANDLES PRICELIST<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:list -->\r\n<ul><li>Size: 2\u201d-12\u201d\/ 50mm \u2013300 mm <\/li><li>Design standard: API 609, BS EN 593. <\/li><li>Face-to-Face dimension: API 609, DIN 3202 k1, ISO 5752, BS 5155, MSS SP-67. <\/li><li>Flange Drilling: ANSI B 16.1, BS4504, DIN PN 10 \/ PN 16. <\/li><li>Test: API 598. Epoxy fusion coating. Different lever operator. <\/li><li>Working Pressure 10 bar \/ 16 bar <\/li><li>Testing Pressure Shell: 1.5 times rated pressure, Seat: 1.1 times rated pressure. <\/li><li>Working Temperature -10\u00b0C to 80\u00b0C (NBR) -10\u00b0C to 120\u00b0C (EPDM) <\/li><\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-features-of-china-butterfly-valve-with-handles\">Features of China Butterfly Valve with Handles<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul><li>Simple structure and strong universality<\/li><li>Valve stem with surface hardening treatment<\/li><li>Adopting a non-pin four-axis connection<\/li><li>Blow out proof stem<\/li><li>ISO Top flange<\/li><li>Isolate the body and stem with medium<\/li><li>Convenient installation on site<\/li><\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Product Overview of China Butterfly Valve with Handles<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:table {\"className\":\"is-style-stripes\"} -->\r\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td>Place of Origin<\/td><td>China (Mainland)<\/td><td>Brand Name<\/td><td>ZECO<\/td><\/tr><tr><td>Model Number<\/td><td>D71X-16Q<\/td><td>Application<\/td><td>General<\/td><\/tr><tr><td>Material<\/td><td>GGG50<\/td><td>Temperature of Media<\/td><td>Low Temperature<\/td><\/tr><tr><td>Pressure<\/td><td>Low Pressure<\/td><td>Power<\/td><td>Manual<\/td><\/tr><tr><td>Media<\/td><td>Water<\/td><td>Port Size<\/td><td>DN50-250<\/td><\/tr><tr><td>Structure<\/td><td>Butterfly<\/td><td>Body Material<\/td><td>GGG50<\/td><\/tr><tr><td>Disc Material<\/td><td>Ductile Iron<\/td><td>Color<\/td><td>Blue<\/td><\/tr><tr><td>Working pressure<\/td><td>PN10\/16<\/td><td>Seal material<\/td><td>Rubber<\/td><\/tr><tr><td>Connection<\/td><td>Wafer<\/td><td>Medium<\/td><td>Water, Oil, Gas<\/td><\/tr><tr><td>MOQ<\/td><td>1 Piece<\/td><td>OEM<\/td><td>Available<\/td><\/tr><tr><td>End Connection<\/td><td>Wafer<\/td><td>Standard or Nonstandard<\/td><td>Standard<\/td><\/tr><\/tbody><\/table><\/figure>\r\n<!-- \/wp:table -->","parent":0,"count":7,"filter":"raw"},{"term_id":3657,"name":"Center line Butterfly Valve","slug":"center-line-butterfly-valve","term_group":0,"term_taxonomy_id":3657,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_e4c4a1-9b\"} \/-->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET CENTERLINE BUTTERFLY VALVE PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA resilient seated butterfly valve with superior design features and materials of construction to provide repeatable tight shutoff in severe abrasive and corrosive environments for a variety of applications.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Standard of Centerline Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Flange Standard.:DIN2501, BS10-D, BS4504, ANSI B16.1, B16.42, JIS B2239<\/li>\r\n \t<li>Valve Tested: API598<\/li>\r\n \t<li>Face to Face: DIN3202-K1, EN558-1 20 SERIES, BS5155, MSS SP-67<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Material of Centerline Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:table -->\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><strong>o<\/strong><\/td>\r\n<td><strong>Parts Name<\/strong><\/td>\r\n<td><strong>Material<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>1<\/td>\r\n<td>Body<\/td>\r\n<td>C.I. \/ D.I. \/ C.S.\u00a0\/ S.S.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>2<\/td>\r\n<td>Disc<\/td>\r\n<td>A536 60-40-18 \/ CF8 \/ CF8M \/ Br \/ AI-Br<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>3<\/td>\r\n<td>Seat<\/td>\r\n<td>NBR \/ EPDM \/ VITON \/ PTFE<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>4<\/td>\r\n<td>Stem<\/td>\r\n<td>SS410 \/ SS304 \/ SS216<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>5<\/td>\r\n<td>Pin<\/td>\r\n<td>SS304 \/ SS316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>6<\/td>\r\n<td>Bushing<\/td>\r\n<td>PTFE \/ Bronze<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>7<\/td>\r\n<td>O-Ring<\/td>\r\n<td>NBR \/ EPDM \/ VITON<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>8<\/td>\r\n<td>Key<\/td>\r\n<td>Carbon Steel \/ SUS304 \/ SUS316<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n<!-- \/wp:table -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Design Features of Centerline Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Corrosion Resistance<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nWith Centerline Butterfly Valves only two parts of the valve come in contact with the medium. This means that neither the body nor mechanical parts such as the shaft are exposed to the corrosive environment.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe only two parts in contact with the medium are the body lining and the disc. These are available in a selection of materials so that a suitable corrosion-resistant combination can be chosen for most any application.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Bi-directional Shutoff<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nCenterline Butterfly Valves are liquid and gas-tight in both flow directions. The disc presses with uniform compression into the elastic cartridge seat over the entire circumference of the valve.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Replaceable Seat<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe replaceable seat consists of a reinforced backup ring, on which the elastomer seat material is vulcanized. When mounting the valve between the pipe flanges this stable seat cannot be deformed or displaced. The cartridge design also prevents deformation when the valve is cycled, such as stretching and bulging of the elastomer in front of the moving disc.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe fixed connection between the elastomer and the backup ring allows the use of the valve in a full vacuum and high flow velocities. The slightly protruding sealing lip of the seat also serves as the flange seal.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-features-of-centerline-butterfly-valve\">Features of Centerline Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Suitable for both gaseous and liquid service<\/li>\r\n \t<li>Phenolic Backed Seat for superior sealing and long term use<\/li>\r\n \t<li>Single-piece stem design assures even torque distribution<\/li>\r\n \t<li>Positive shutoff bi-directionally<\/li>\r\n \t<li>Direct mount automation<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Applications of Centerline Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>HVAC<\/li>\r\n \t<li>Chemical\/Petrochemical Processing<\/li>\r\n \t<li>Food and Beverage<\/li>\r\n \t<li>Power and Utilities<\/li>\r\n \t<li>Pulp and Paper<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->","parent":0,"count":12,"filter":"raw"},{"term_id":2519,"name":"Concentric Butterfly Valve","slug":"concentric-butterfly-valve","term_group":0,"term_taxonomy_id":2519,"taxonomy":"post_tag","description":"","parent":0,"count":5,"filter":"raw"},{"term_id":2211,"name":"Double Offset butterfly valve","slug":"double-offset-butterfly-valve","term_group":0,"term_taxonomy_id":2211,"taxonomy":"post_tag","description":"","parent":0,"count":7,"filter":"raw"},{"term_id":2184,"name":"triple offset butterfly valve","slug":"triple-offset-butterfly-valve","term_group":0,"term_taxonomy_id":2184,"taxonomy":"post_tag","description":"","parent":0,"count":8,"filter":"raw"}],"taxonomy_info":{"category":[{"value":2210,"label":"Butterfly Valve"}],"post_tag":[{"value":2443,"label":"Butterfly Valve Manufacturer"},{"value":1881,"label":"Butterfly Valve Wikipedia"},{"value":3190,"label":"Butterfly Valves Manufacturer"},{"value":3657,"label":"Center line Butterfly Valve"},{"value":2519,"label":"Concentric Butterfly Valve"},{"value":2211,"label":"Double Offset butterfly valve"},{"value":2184,"label":"triple offset butterfly valve"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Comparison\u00a0of Concentric Butterfly Valves, Double Offset Butterfly Valves and Triple Offset Butterfly Valves - ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/fr\/comparison-of-concentric-butterfly-valves-double-offset-butterfly-valves-and-triple-offset-butterfly-valves.html\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comparison\u00a0of Concentric Butterfly Valves, Double Offset Butterfly Valves and Triple Offset Butterfly Valves - ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"In recent years, metal-seated eccentric butterfly valves have competed with more traditional industrial valves like the globe and ball valves for critical ... 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