{"id":16962,"date":"2022-06-25T11:28:00","date_gmt":"2022-06-25T11:28:00","guid":{"rendered":"https:\/\/zecovalve.com\/?p=16962"},"modified":"2022-09-10T23:58:32","modified_gmt":"2022-09-10T23:58:32","slug":"how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/pt\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html","title":{"rendered":"Como escolher v\u00e1lvula borboleta conc\u00eantrica V\u00e1lvula borboleta de deslocamento duplo e v\u00e1lvula borboleta de deslocamento triplo"},"content":{"rendered":"<p>Existem quatro tipos de v\u00e1lvulas borboleta, v\u00e1lvula borboleta conc\u00eantrica, v\u00e1lvula borboleta exc\u00eantrica simples, v\u00e1lvula borboleta de deslocamento duplo e v\u00e1lvula borboleta de deslocamento triplo.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-choose-these-four\">Como escolher esses quatro? <\/h2>\n\n\n\n<p>V\u00e1lvula borboleta conc\u00eantrica, v\u00e1lvula borboleta exc\u00eantrica \u00fanica, v\u00e1lvula borboleta de deslocamento duplo e v\u00e1lvula borboleta de deslocamento triplo refletem o fato de que o processo de abertura e fechamento economiza cada vez mais trabalho e o desgaste da superf\u00edcie de veda\u00e7\u00e3o \u00e9 cada vez menor. Ao definir a posi\u00e7\u00e3o do eixo rotativo da placa da v\u00e1lvula borboleta, o estado de veda\u00e7\u00e3o e abertura da v\u00e1lvula borboleta pode ser alterado.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00e1lvula de borboleta conc\u00eantrica<\/h3>\n\n\n\n<p>A<strong>&nbsp;v\u00e1lvula borboleta conc\u00eantrica&nbsp;<\/strong>\u00e9 caracterizado pela mesma posi\u00e7\u00e3o do eixo da haste, centro da borboleta e centro do corpo da v\u00e1lvula. De um modo geral, o<strong>&nbsp;v\u00e1lvula borboleta conc\u00eantrica<\/strong>&nbsp;\u00e9 usado tanto quanto poss\u00edvel se a v\u00e1lvula borboleta conc\u00eantrica puder ser usada em princ\u00edpio. A v\u00e1lvula borboleta conc\u00eantrica \u00e9 um produto convencional devido \u00e0 sua baixa exig\u00eancia de veda\u00e7\u00e3o tanto na estrutura quanto na opera\u00e7\u00e3o. Para superar a extrus\u00e3o, arranh\u00f5es e garantir o desempenho da veda\u00e7\u00e3o, as sedes das v\u00e1lvulas borboleta conc\u00eantricas s\u00e3o basicamente feitas de materiais el\u00e1sticos, como borracha ou politetrafluoroetileno, que s\u00e3o v\u00e1lvulas borboleta com veda\u00e7\u00e3o suave.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00e1lvula Borboleta Exc\u00eantrica Dupla<\/h3>\n\n\n\n<p>A v\u00e1lvula borboleta exc\u00eantrica dupla \u00e9 a mais amplamente utilizada. A estrutura apresenta que o eixo da haste se desvia tanto do centro da placa borboleta quanto do centro do corpo da v\u00e1lvula. Ele se desvia de duas posi\u00e7\u00f5es centrais e \u00e9 chamado\u00a0<strong>v\u00e1lvula borboleta exc\u00eantrica dupla<\/strong>. Muitas v\u00e1lvulas borboleta de deslocamento duplo s\u00e3o veda\u00e7\u00f5es lineares. O atrito ocorre entre a placa do disco e a sede da v\u00e1lvula quando a superf\u00edcie de veda\u00e7\u00e3o est\u00e1 fechada. O efeito de veda\u00e7\u00e3o \u00e9 muito bom. Possui caracter\u00edsticas de pequena \u00e1rea e forte press\u00e3o. Depois que a v\u00e1lvula \u00e9 aberta, a placa borboleta pode se soltar rapidamente da sede da v\u00e1lvula, eliminando bastante a extrus\u00e3o desnecess\u00e1ria e arranh\u00f5es entre a placa borboleta e a sede da v\u00e1lvula, reduzindo a resist\u00eancia \u00e0 abertura, reduzindo o desgaste e melhorando a vida \u00fatil da sede da v\u00e1lvula.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00e1lvula Borboleta Exc\u00eantrica Tripla<\/h3>\n\n\n\n<p>A v\u00e1lvula borboleta exc\u00eantrica tripla realizou a terceira excentricidade com base na v\u00e1lvula borboleta de duplo deslocamento. A forma do par de veda\u00e7\u00e3o n\u00e3o \u00e9 um cone positivo, mas sim um cone obl\u00edquo. A maioria deles \u00e9 for\u00e7a de curta dist\u00e2ncia e veda\u00e7\u00e3o de superf\u00edcie. O eixo da haste de uma v\u00e1lvula borboleta exc\u00eantrica tripla \u00e9 uma estrutura de eixo de tr\u00eas se\u00e7\u00f5es. Os segmentos de dois eixos da haste do eixo de tr\u00eas se\u00e7\u00f5es s\u00e3o conc\u00eantricos e a linha central do eixo do segmento central desvia do eixo de ambas as extremidades. A placa borboleta \u00e9 instalada no segmento intermedi\u00e1rio do eixo. Essa estrutura exc\u00eantrica torna a placa borboleta exc\u00eantrica dupla na posi\u00e7\u00e3o totalmente aberta e exc\u00eantrica \u00fanica na posi\u00e7\u00e3o fechada quando a placa borboleta gira. Por causa do eixo exc\u00eantrico, ao fechar, a placa borboleta se move uma dist\u00e2ncia para dentro do cone de veda\u00e7\u00e3o da sede, e a superf\u00edcie de veda\u00e7\u00e3o da placa borboleta e da sede coincidem para obter um desempenho de veda\u00e7\u00e3o confi\u00e1vel. Isso compensa a contradi\u00e7\u00e3o de que a veda\u00e7\u00e3o dura \u00e9 ruim na veda\u00e7\u00e3o e a veda\u00e7\u00e3o macia \u00e9 boa na veda\u00e7\u00e3o, mas n\u00e3o \u00e9 resistente a altas temperaturas.<\/p>\n\n\n\n<p>Quando usar a v\u00e1lvula borboleta conc\u00eantrica e quando escolher a v\u00e1lvula borboleta exc\u00eantrica dupla ou a v\u00e1lvula borboleta exc\u00eantrica tripla, depende principalmente dos h\u00e1bitos de uso e do or\u00e7amento. Se n\u00e3o for uma condi\u00e7\u00e3o de trabalho extrema, a v\u00e1lvula borboleta conc\u00eantrica geralmente \u00e9 escolhida, enquanto a v\u00e1lvula borboleta conc\u00eantrica \u00e9 escolhida na medida do poss\u00edvel. Porque a v\u00e1lvula borboleta conc\u00eantrica \u00e9 simples em estrutura e relativamente econ\u00f4mica em pre\u00e7o.<\/p>\n\n\n\n<p><br>Zeco Valve Group Co., Ltd. fornece v\u00e1rias v\u00e1lvulas borboleta. Bem-vindo ao compr\u00e1-los!<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">Etiquetas relacionadas :<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/\">V\u00e1lvula ZECO<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/introduction-of-epdm-nbr-butterfly-valve-seat-industrial-valve-information-news-zeco-valve.html\/\">V\u00e1lvula borboleta NBR<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/difference-between-gate-valve-and-butterfly-valve.html\/\">Diferen\u00e7a entre a v\u00e1lvula de gaveta e a v\u00e1lvula de borboleta<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/advantages-and-disadvantages-of-globe-valves.html\/\">O que \u00e9 uma v\u00e1lvula de globo?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/produto\/manual-gate-valve\/\">V\u00e1lvula de gaveta de acionamento manual Fabricante<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/tag\/shanghai-pressure-reducing-valve-factory\/\">F\u00e1brica de v\u00e1lvulas redutoras de press\u00e3o de Xangai<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/the-difference-between-globe-valve-and-ball-valve.html\/\">V\u00e1lvula de Globo vs V\u00e1lvula de Esfera<\/a>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Existem quatro tipos de v\u00e1lvulas borboleta, v\u00e1lvula borboleta conc\u00eantrica, v\u00e1lvula borboleta exc\u00eantrica simples, v\u00e1lvula borboleta de deslocamento duplo e v\u00e1lvula borboleta de deslocamento triplo\u2026 <a title=\"Como escolher v\u00e1lvula borboleta conc\u00eantrica V\u00e1lvula borboleta de deslocamento duplo e v\u00e1lvula borboleta de deslocamento triplo\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/pt\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html\" aria-label=\"Mais em Como escolher v\u00e1lvula borboleta conc\u00eantrica V\u00e1lvula borboleta de duplo deslocamento e v\u00e1lvula borboleta de deslocamento triplo\">Ler mais<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[2210],"tags":[1957,3657,3192,2519,2211,2184],"class_list":["post-16962","post","type-post","status-publish","format-standard","hentry","category-butterfly-valve","tag-butterfly-valve","tag-center-line-butterfly-valve","tag-china-epdm-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":false,"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/pt\/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":1957,"name":"butterfly valve","slug":"butterfly-valve","term_group":0,"term_taxonomy_id":1957,"taxonomy":"post_tag","description":"","parent":0,"count":30,"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":3192,"name":"China EPDM Butterfly Valve","slug":"china-epdm-butterfly-valve","term_group":0,"term_taxonomy_id":3192,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_d933f8-47\"} \/-->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-epdm-butterfly-valve\">What is EPDM Butterfly Valve?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nEPDM is the abbreviated name for Ethylene Propylene Diene Monomer. In general industry, one may see other abbreviations or trade names used in lieu of EPDM such as EPT, Nordel, ECD, or EPR. All of these are the same materials as EPDM. EPDM is a standard seat material offered in Bray resilient-seated butterfly valves.\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=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET CHINA EPDM 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>Specifications of EPDM 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 class=\"has-text-align-center\" data-align=\"center\">Design Standard<\/td>\r\n<td class=\"has-text-align-left\" data-align=\"left\">EN 593,\u00a0MSS SP67\u00a0\u00a0\u00a0API 609\u00a0\u00a0BS5155<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Inspection &amp;\u00a0Test<\/td>\r\n<td class=\"has-text-align-left\" data-align=\"left\">API 598\u00a0\u00a0ISO 5208\u00a0\u00a0EN 12266<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">End Standard<\/td>\r\n<td class=\"has-text-align-left\" data-align=\"left\">ANSI B16.1 CL. 125LB &amp;\u00a0B16.5 CL. 150LBAS 2129 Table D\u00a0&amp; E\u00a0\u00a0\u00a0BS 10 Table D\u00a0&amp; EDIN 2501 PN6, PN10 &amp;\u00a0PN16EN 1092 PN6, PN10 &amp;\u00a0PN16ISO 2531 PN6, PN10 &amp;\u00a0PN16ISO 7005 PN6, PN10 &amp;\u00a0PN16KS B\u00a01511 \/\u00a0JIS B\u00a02210 5K &amp;\u00a010KMSS SP44 CL. 150LB\u00a0\u00a0AWWAC207SABS 1123 Table 1000\/3 &amp;\u00a0Table 1600\/3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Face to Face<\/td>\r\n<td class=\"has-text-align-left\" data-align=\"left\">ISO 5752,\u00a0EN 558,\u00a0MSS SP67, and API 609\u00a0\u00a0DIN3202<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Top Flange<\/td>\r\n<td class=\"has-text-align-left\" data-align=\"left\">ISO 5211<\/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>Types of China EPDM Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li><strong>Wafer Butterfly valves<\/strong>\r\n<ul>\r\n \t<li>Equipped with a tightly fitting seal, o ring, and a flat valve face, Wafer Butterfly valves have good control of flow, which assures unidirectional flow.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Flanged Butterfly valves<\/strong>\r\n<ul>\r\n \t<li>These Flanged Butterfly valves with flanges on both ends. The flange ends connect with the flanges on the pipeline by bolts.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Lug-Style Butterfly valves<\/strong>\r\n<ul>\r\n \t<li>A Lug-Style Butterfly valve has the function of reducing pressure rating.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Welded Butterfly valves<\/strong>\r\n<ul>\r\n \t<li>Butt Weld Butterfly valves and Socket Weld Butterfly valves are two commonly used Welded Butterfly valves. These kinds of valves are of the enclosed type, helping to both on-off and regulate service.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Parts of EPDM 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 class=\"has-text-align-center\" data-align=\"center\">Parts<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Material<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Body<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Cast iron, Ductile iron, WCB<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Seat<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">EPDM, NBR, VITON, PTFE<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Disc<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Nickel ductile iron, AI bronze, Stainless Steel<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Stem<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Stainless Steel, Monel<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Bushing<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">PTFE<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">\"O\" ring<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">PTFE<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Pin<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Stainless Steel<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Key<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Stainless Steel<\/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>Advantages of EPDM Butterfly Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nButterfly valves are similar to ball valves but have more advantages. They are open and close very quickly when actuated pneumatically. The disc is lighter than a ball, and the valves require less structural support than a ball valve of comparable diameter. Butterfly valves are very precise, which makes them advantageous in industrial applications. They are quite reliable and require very little maintenance.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:list {\"ordered\":true} -->\r\n<ol>\r\n \t<li>Turning on\/off easily and rapidly with less force. Having less fluid resistance and can be operated frequently.<\/li>\r\n \t<li>Simple structure, small size, and short face-to-face dimension, which are suitable for large-diameter valves.<\/li>\r\n \t<li>It can be used for transmitting mud, fewer liquids are stored at the apertures of the pipe.<\/li>\r\n \t<li>Long service life. Standing the test of tens of thousands of opening\/closing operations.<\/li>\r\n \t<li>Butterfly valves have excellent regulation performance.<\/li>\r\n \t<li>Small torque. The pressure on discs at the two sides of the spindle is almost equal, causing contrary torque. Thereby, the valves can be opened with less force.<\/li>\r\n \t<li>A sealing face is generally made of rubber or plastic. So the butterfly valves can be with good sealing under low pressure.<\/li>\r\n<\/ol>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>EPDM Butterfly Valve - China Manufacturers, Factory, Suppliers<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nWe'll make each hard work to become excellent and excellent, and speed up our measures for standing from the rank of intercontinental top-grade and high-tech enterprises for Epdm Butterfly Valve, Rubber Lined Double Flange Butterfly Valve, Butterfly Valve Wafer, Electric Actuator Butterfly Valve, Lug Support Butterfly Valve. We warmly welcome friends from all walks of existence to cooperate with us. The product will supply to all over the world, such as in Europe, America, Australia, Zurich, Mexico, Greece, and Azerbaijan. We have top engineers in these industries and an efficient team in the research. What is more, we have our own archives mouths and markets in China at a low cost. Therefore, we can meet different inquiries from different clients. Please find our website to check more information about our products.\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":7,"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":1957,"label":"butterfly valve"},{"value":3657,"label":"Center line Butterfly Valve"},{"value":3192,"label":"China EPDM 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>How to Choose Concentric Butterfly Valve Double Offset Butterfly Valve and Triple Offset Butterfly Valve - 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\/pt\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Choose Concentric Butterfly Valve Double Offset Butterfly Valve and Triple Offset Butterfly Valve - ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"There are four types of butterfly valves, concentric butterfly valve, single eccentric butterfly valve, double offset butterfly valve and triple offset butterfly ... Ler mais\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/pt\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html\" \/>\n<meta property=\"og:site_name\" content=\"ZECO Valve\" \/>\n<meta property=\"article:published_time\" content=\"2022-06-25T11:28:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-09-10T23:58:32+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\">\n\t<meta name=\"twitter:data1\" content=\"Jerry\">\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\">\n\t<meta name=\"twitter:data2\" content=\"2 minutos\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/zecovalve.com\/#website\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"ZECO Valve\",\"description\":\"Industrial Ball Valve, Gate Valve and Globe Valve Manufacturer\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/zecovalve.com\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html#webpage\",\"url\":\"https:\/\/zecovalve.com\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html\",\"name\":\"How to Choose Concentric Butterfly Valve Double Offset Butterfly Valve and Triple Offset Butterfly Valve - ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"datePublished\":\"2022-06-25T11:28:00+00:00\",\"dateModified\":\"2022-09-10T23:58:32+00:00\",\"author\":{\"@id\":\"https:\/\/zecovalve.com\/#\/schema\/person\/f65555145e0ef282ff87649309aba6a3\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"position\":2,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html\",\"url\":\"https:\/\/zecovalve.com\/how-to-choose-concentric-butterfly-valve-double-offset-butterfly-valve-and-triple-offset-butterfly-valve.html\",\"name\":\"How to Choose Concentric Butterfly Valve Double Offset Butterfly Valve and Triple Offset Butterfly Valve\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/zecovalve.com\/#\/schema\/person\/f65555145e0ef282ff87649309aba6a3\",\"name\":\"Jerry\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/posts\/16962","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/comments?post=16962"}],"version-history":[{"count":0,"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/posts\/16962\/revisions"}],"wp:attachment":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/media?parent=16962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/categories?post=16962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/tags?post=16962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}