{"id":4416,"date":"2021-12-29T07:12:23","date_gmt":"2021-12-29T07:12:23","guid":{"rendered":"https:\/\/zecovalve.com\/some-knowledge-of-flanged-center-line-butterfly-valve.html"},"modified":"2022-08-15T02:57:12","modified_gmt":"2022-08-15T02:57:12","slug":"some-knowledge-of-flanged-center-line-butterfly-valve","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/de\/some-knowledge-of-flanged-center-line-butterfly-valve.html","title":{"rendered":"Doppelflansch-Mittellinien-Absperrklappe \u2013 Konzentrische Absperrklappe"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Was sind <strong><mark style=\"background-color:var(--base)\" class=\"has-inline-color has-contrast-2-color\"><a href=\"https:\/\/zecovalve.com\/de\/produkt\/wafer-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zentrische Absperrklappen<\/a><\/mark><\/strong>?<\/h2>\n\n\n\n<p>Zentrische Absperrklappen werden vorwiegend im Anlagenbau innerhalb geschlossener Geb\u00e4ude eingesetzt. Hier spielt dieser Absperrklappentyp seine Vorteile aus, da er preisg\u00fcnstiger ist und weniger Platz ben\u00f6tigt als eine Flanschabsperrklappe.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"330\" height=\"300\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/wafer-butterfly-valve.jpg\" alt=\"Zwischenflanschklappe\" class=\"wp-image-16939\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/wafer-butterfly-valve.jpg 330w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/wafer-butterfly-valve-300x273.jpg 300w\" sizes=\"auto, (max-width: 330px) 100vw, 330px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">Merkmale konzentrischer Absperrklappen<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>Geeignet f\u00fcr den Einsatz mit Gasen und Fl\u00fcssigkeiten<\/li><li>Positive Absperrung bidirektional<\/li><li>Direktmontage-Automatisierung<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Anwendungen von Centerline-Absperrklappen<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>HVAC<\/li><li>Chemische\/Petrochemische Verarbeitung<\/li><li>Nahrungsmittel und Getr\u00e4nke<\/li><li>Energie und Versorgung<\/li><li>Zellstoff und Papier<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-double-flanged-center-line-butterfly-valve\">Was ist ein <strong><mark style=\"background-color:var(--base)\" class=\"has-inline-color has-contrast-2-color\"><a href=\"https:\/\/zecovalve.com\/de\/produkt\/flanged-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">Doppelflansch-Absperrklappe mit Mittelanschluss<\/a><\/mark><\/strong>?<\/h2>\n\n\n\n<p>Doppelflansch-Absperrklappe zur Regulierung und Durchflusstrennung in Wasserversorgungsanlagen, Rohrleitungen, Bew\u00e4sserungsanlagen usw. Aufgrund der hydrodynamischen Konstruktion der Scheibe weist sie einen geringen Druckverlust auf, ist wasserdicht (100%) und ben\u00f6tigt keine Dichtungen zum Einbau.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/flanged-concentric-butterfly-valve-with-electric-actuator.png\" alt=\"\" class=\"wp-image-17359\" width=\"300\" height=\"225\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/flanged-concentric-butterfly-valve-with-electric-actuator.png 600w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/flanged-concentric-butterfly-valve-with-electric-actuator-300x225.png 300w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n\n\n<p><span style=\"font-size: medium;\">Nach verschiedenen Bauformen kann es in Mittellinien-Absperrklappen, Absperrklappen mit einfacher Exzentrizit\u00e4t, Absperrklappen mit doppelter Exzentrizit\u00e4t unterteilt werden,<\/span> und drei exzentrische Absperrklappen. Die Absperrklappe der Mittellinie ist normalerweise mit einer Weichdichtung abgedichtet. Exzentrische Absperrklappen mit Hartdichtung. Die drei exzentrischen Absperrklappen sind derzeit die leistungsst\u00e4rksten Ventile. Sowohl weichdichtende Absperrklappen haben eine ausgezeichnete Dichtleistung als auch hartdichtende Absperrklappen haben eine hohe Temperatur- und Hochdruckbest\u00e4ndigkeit.<span style=\"font-size: medium;\"> Korrosionsbest\u00e4ndigkeitseigenschaften.<\/span><\/p>\n\n\n\n<p><span style=\"font-size: medium;\">Je nach den verschiedenen Anschlussformen kann man zwischen Doppel-Absperrklappen, Flansch-Absperrklappen, Schwei\u00df-Absperrklappen, Schraub-Absperrklappen, Klemm-Absperrklappen usw. unterscheiden. Wissen Sie also, wie es dazu kam?<\/span><\/p>\n\n\n\n<p><span style=\"font-size: medium;\">Wir sind ein professioneller Lieferant von Absperrklappen mit Flanschmittellinie und bieten Absperrklappen mit Flanschmittellinie an. Kontaktieren Sie uns gerne!<\/span><\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">Verwandte Tags:<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/\">ZECO-Ventil<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/produktkategorie\/butterfly-valve\/\">Hersteller von Absperrklappen \u2013 Verschiedene Absperrklappentypen<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/thermoplastic-materials-as-valve-seat.html\/\">Thermoplastische Materialien als Kugelhahnsitz und Absperrklappensitz<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/difference-between-gate-valve-and-butterfly-valve.html\/\">Unterschied zwischen Absperrschieber und Absperrklappe<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/introduction-of-epdm-nbr-butterfly-valve-seat-industrial-valve-information-news-zeco-valve.html\/\">NBR-Absperrklappe<\/a>\n\n<\/div>\n\n\n\n<p>Zehn Artikel davor und danach<\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/notes-for-use-of-cast-iron-butterfly-valves.html\/\">Hinweise zur Verwendung von Absperrklappen aus Gusseisen<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/why-should-the-stop-valve-be-low-in-and-high.html\/\">Warum sollte das Absperrventil unten und oben sein?<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/whats-the-difference-between-cast-iron-valve-and-cast-steel-valve.html\/\">Was ist der Unterschied zwischen Gusseisenventil und Gussstahlventil<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/what-is-a-10k-elastic-deat-gate-valve.html\/\">Was ist ein 10K-elastisches Absperrschieberventil?<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/seven-structural-features-of-water-sealed-globe-valve.html\/\">Sieben strukturelle Merkmale des wasserdichten Absperrventils<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/how-the-butterfly-valve-works-2.html\/\">Wie funktioniert das Absperrventil?<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/basic-valve-purchase-criteria.html\/\">Grundlegende Kriterien f\u00fcr den Ventilkauf<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/want-to-learn-about-cast-iron-butterfly-valve-come-on-tts-all-summed-up-here.html\/\">M\u00f6chten Sie mehr \u00fcber Absperrklappen aus Gusseisen erfahren? Hier ist alles zusammengefasst<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/types-of-pneumatic-drive-type-butterfly-valve-accessories.html\/\">Arten von pneumatischen Antriebsarten Absperrklappenzubeh\u00f6r<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/structural-features-of-bellow-seal-globe-valve.html\/\">Strukturelle Merkmale des Balgdichtungs-Absperrventils<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Was sind zentrische Absperrklappen? Zentrische Absperrklappen werden vor allem beim Bau von Anlagen eingesetzt, die sich innerhalb geschlossener Geb\u00e4ude befinden. Dabei handelt es sich um \u2026 <a title=\"Doppelflansch-Mittellinien-Absperrklappe \u2013 Konzentrische Absperrklappe\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/de\/some-knowledge-of-flanged-center-line-butterfly-valve.html\" aria-label=\"Mehr zu Doppelflansch-Mittellinien-Absperrklappe \u2013 Konzentrische Absperrklappe\">Weiterlesen ...<\/a><\/p>","protected":false},"author":2,"featured_media":17359,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1],"tags":[3657,3654,3656,3509,3653,2519,3655],"class_list":["post-4416","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-center-line-butterfly-valve","tag-center-line-butterfly-valves","tag-center-line-check-valve","tag-centerline-butterfly-valve","tag-centric-butterfly-valve","tag-concentric-butterfly-valve","tag-double-flanged-center-line-butterfly-valve","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/flanged-concentric-butterfly-valve-with-electric-actuator.png",600,450,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/de\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":1,"name":"Uncategorized","slug":"uncategorized","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":452,"filter":"raw","cat_ID":1,"category_count":452,"category_description":"","cat_name":"Uncategorized","category_nicename":"uncategorized","category_parent":0}],"tag_info":[{"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":3654,"name":"center line butterfly valves","slug":"center-line-butterfly-valves","term_group":0,"term_taxonomy_id":3654,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3656,"name":"center line check valve","slug":"center-line-check-valve","term_group":0,"term_taxonomy_id":3656,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3509,"name":"centerline butterfly valve","slug":"centerline-butterfly-valve","term_group":0,"term_taxonomy_id":3509,"taxonomy":"post_tag","description":"","parent":0,"count":3,"filter":"raw"},{"term_id":3653,"name":"centric butterfly valve","slug":"centric-butterfly-valve","term_group":0,"term_taxonomy_id":3653,"taxonomy":"post_tag","description":"","parent":0,"count":1,"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":3655,"name":"Double Flanged Center Line Butterfly Valve","slug":"double-flanged-center-line-butterfly-valve","term_group":0,"term_taxonomy_id":3655,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_b0a475-21\"} \/-->\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 DOUBLE FLANGED CENTER LINE 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>Centerline Double Flange Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nDouble flange butterfly valve with rubber vulcanized on the body with pin design. This butterfly valve series has many design features and benefits, such as high Cv ratings, minimum parts exposed to the line media, greater reliability, and a proven record of long service life. A major design advantage of this valve product line is international compatibility.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-features-of-double-flanged-center-line-butterfly-valve\">Features of Double Flanged Center Line Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>A replaceable cartridge seat design with a solid backup ring allows the best fit for vacuum applications and minimum costs over a lifetime.<\/li>\r\n \t<li>Only 2 wetted parts, disc, and seat, with no exposed metal-to-metal contact points, for maximum corrosion resistance.<\/li>\r\n \t<li>Self-centering disc with a smooth finish and spherical edge reduces wear and resists corrosion and abrasion.<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Specification of Double Flanged Center Line Butterfly Valve<\/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\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>Size<\/td>\r\n<td>DN80-DN1000<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Pressure<\/td>\r\n<td>0.25MPa-0.6MPa\uff0c1.0MPa\uff0c1.6MPa<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Medium<\/td>\r\n<td>Air, water, sewage, steam, gas, oil, etc<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Operated method<\/td>\r\n<td>Manual, worm gear drive, gas drive, electric drive<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Body<\/td>\r\n<td>Ductile iron, cast steel, alloy steel, stainless steel<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Disc<\/td>\r\n<td>Ductile iron, cast steel, alloy steel, stainless steel<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Seal ring<\/td>\r\n<td>Rubber, Teflon<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Stem<\/td>\r\n<td>Cr13, stainless steel<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Packing<\/td>\r\n<td>Type 0 ring, flexible graphite<\/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>Standard of Centerline Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Manufacturing: GB\/T12238-1989\uff1blS0 10631-1994\uff1bBS EN593-1998<\/li>\r\n \t<li>Flange connection standard: GB\/T17241\uff0e6-1998\uff1aIS0 7005-2; BSEN 1092-2002<\/li>\r\n \t<li>Face to face: GB\/T1 2221-1989\uff1alS0 5752-1988\uff1bBS EN558-1<\/li>\r\n \t<li>Test: GB\/T13927-1992\uff1bJB\/T9092-1999\uff1bS0 5028-1993\uff1bBS 6755-l-1986<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->","parent":0,"count":4,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}],"post_tag":[{"value":3657,"label":"Center line Butterfly Valve"},{"value":3654,"label":"center line butterfly valves"},{"value":3656,"label":"center line check valve"},{"value":3509,"label":"centerline butterfly valve"},{"value":3653,"label":"centric butterfly valve"},{"value":2519,"label":"Concentric Butterfly Valve"},{"value":3655,"label":"Double Flanged Center Line Butterfly Valve"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Double Flanged Center Line Butterfly Valve - Concentric Butterfly Valve | ZECO<\/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\/de\/some-knowledge-of-flanged-center-line-butterfly-valve.html\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Double Flanged Center Line Butterfly Valve - Concentric Butterfly Valve | ZECO\" \/>\n<meta property=\"og:description\" content=\"What are Centric Butterfly Valves? 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