{"id":8562,"date":"2021-12-30T07:24:17","date_gmt":"2021-12-30T07:24:17","guid":{"rendered":"https:\/\/zecovalve.com\/news-function-of-pneumatic-valve-positioner-api-approved-valve-manufacturer.html"},"modified":"2022-11-01T05:53:26","modified_gmt":"2022-11-01T05:53:26","slug":"news-function-of-pneumatic-valve-positioner-api-approved-valve-manufacturer","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/pt\/news-function-of-pneumatic-valve-positioner-api-approved-valve-manufacturer.html","title":{"rendered":"Posicionador de v\u00e1lvula de controle pneum\u00e1tico"},"content":{"rendered":"<h2 class=\"wp-block-heading\">O que \u00e9 um posicionador em v\u00e1lvula de controle?<\/h2>\n\n\n\n<p>Um posicionador de v\u00e1lvula \u00e9 um dispositivo que faz interface com o controlador de processo e o atuador e \u00e9 conectado \u00e0 haste da v\u00e1lvula para que possa detectar a posi\u00e7\u00e3o exata da v\u00e1lvula. O posicionador recebe um sinal de entrada do controlador de processo e envia um sinal ao atuador para mover a v\u00e1lvula.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Configura\u00e7\u00e3o do posicionador de v\u00e1lvula<\/h2>\n\n\n\n<p>Os posicionadores de v\u00e1lvula podem ser divididos em posicionadores de v\u00e1lvula pneum\u00e1ticos, posicionadores de v\u00e1lvula eletropneum\u00e1ticos e posicionadores de v\u00e1lvula inteligentes de acordo com sua estrutura e princ\u00edpio de funcionamento.<\/p>\n\n\n\n<p>O posicionador de v\u00e1lvula pode aumentar a pot\u00eancia de sa\u00edda da v\u00e1lvula reguladora, reduzir o atraso de transmiss\u00e3o do sinal regulador, acelerar o movimento da haste da v\u00e1lvula, melhorar a linearidade da v\u00e1lvula, superar o atrito da haste da v\u00e1lvula e eliminar a influ\u00eancia de a for\u00e7a desequilibrada Para garantir o posicionamento correto da v\u00e1lvula de controle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Adaptadores de posicionador de v\u00e1lvula<\/h2>\n\n\n\n<p>Os atuadores comumente usados s\u00e3o atuadores pneum\u00e1ticos, atuadores el\u00e9tricos, existem cursos retos e movimentos angulares. Para abertura e fechamento autom\u00e1tico e manual de todos os tipos de v\u00e1lvulas, placas de vento, etc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-valve-positioner-working-principle\">Princ\u00edpio de funcionamento do posicionador de v\u00e1lvula<\/h2>\n\n\n\n<p>O posicionador de v\u00e1lvula \u00e9 o principal acess\u00f3rio da v\u00e1lvula de controle. Ele toma o sinal de deslocamento da haste da v\u00e1lvula como sinal de medi\u00e7\u00e3o de feedback de entrada, toma o sinal de sa\u00edda do controlador como sinal de ajuste, continua a compara\u00e7\u00e3o, quando os dois apresentam desvio, muda seu sinal de sa\u00edda para o mecanismo executivo, causa a a\u00e7\u00e3o do mecanismo executivo , \u00e9 estabelecida a correspond\u00eancia um-para-um entre o m\u00faltiplo de deslocamento da haste da v\u00e1lvula e o sinal de sa\u00edda do controlador. Portanto, o posicionador de v\u00e1lvula consiste em um sinal de medi\u00e7\u00e3o de deslocamento da haste da v\u00e1lvula para a sa\u00edda do sistema de controle de feedback de sinal definido pelo controlador. As vari\u00e1veis de controle do sistema de controle s\u00e3o os sinais de sa\u00edda do posicionador de v\u00e1lvula para o atuador.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Classifica\u00e7\u00e3o de posicionadores de v\u00e1lvula<\/h2>\n\n\n\n<p>O posicionador de v\u00e1lvula de acordo com o sinal de entrada \u00e9 dividido em um posicionador de v\u00e1lvula pneum\u00e1tico e um posicionador de v\u00e1lvula el\u00e9trico. O sinal de entrada do posicionador de v\u00e1lvula pneum\u00e1tica \u00e9 um sinal de g\u00e1s padr\u00e3o, por exemplo, sinal de g\u00e1s 20 ~ 100KPA, seu sinal de sa\u00edda \u00e9 um sinal de g\u00e1s padr\u00e3o. O sinal de entrada do posicionador de v\u00e1lvula el\u00e9trica \u00e9 o sinal de corrente ou tens\u00e3o padr\u00e3o, como sinal de corrente de 4 ~ 20 mA ou sinal de tens\u00e3o de 1 ~ 5 V, etc. Na v\u00e1lvula el\u00e9trica, o posicionador ser\u00e1 convertido em for\u00e7a eletromagn\u00e9tica, o sinal de g\u00e1s \u00e9 ent\u00e3o emitido \u00e0 v\u00e1lvula de controle com mostrador.<br>A dire\u00e7\u00e3o de a\u00e7\u00e3o pode ser dividida em um posicionador de v\u00e1lvula unidirecional e um posicionador de v\u00e1lvula bidirecional. Quando o posicionador de v\u00e1lvula unidirecional \u00e9 usado no atuador de pist\u00e3o, o posicionador de v\u00e1lvula opera em apenas uma dire\u00e7\u00e3o e o posicionador de v\u00e1lvula bidirecional opera em ambos os lados do cilindro do atuador de pist\u00e3o e em ambas as dire\u00e7\u00f5es.<\/p>\n\n\n\n<p>De acordo com a sa\u00edda do posicionador de v\u00e1lvula e o ganho do sinal de entrada, os s\u00edmbolos s\u00e3o divididos em posicionador de v\u00e1lvula positivo e posicionador de v\u00e1lvula negativo. Quando o sinal de entrada do posicionador de v\u00e1lvula de a\u00e7\u00e3o positiva aumenta, o sinal de sa\u00edda tamb\u00e9m aumenta, de modo que o ganho \u00e9 positivo. Quando o sinal de entrada do posicionador de v\u00e1lvula de a\u00e7\u00e3o contr\u00e1ria \u00e9 aumentado, o sinal de sa\u00edda \u00e9 reduzido e, portanto, o ganho \u00e9 negativo.<\/p>\n\n\n\n<p>De acordo com um posicionador de v\u00e1lvula, o sinal de entrada \u00e9 um sinal anal\u00f3gico ou digital, que pode ser dividido em um posicionador de v\u00e1lvula geral e um posicionador de v\u00e1lvula el\u00e9trico de barramento de campo. O sinal de entrada de um posicionador de v\u00e1lvula geral \u00e9 um sinal anal\u00f3gico de press\u00e3o de ar ou corrente e tens\u00e3o, e o sinal de entrada do posicionador de v\u00e1lvula el\u00e9trico de barramento de campo \u00e9 um sinal digital do barramento de campo.<\/p>\n\n\n\n<p>Dependendo se o posicionador de v\u00e1lvula com CPU pode ser dividido em posicionador de v\u00e1lvula el\u00e9trico geral e posicionador de v\u00e1lvula el\u00e9trico inteligente. O posicionador el\u00e9trico geral de v\u00e1lvula n\u00e3o possui CPU, portanto, n\u00e3o possui intelig\u00eancia e n\u00e3o consegue realizar as opera\u00e7\u00f5es inteligentes relevantes. O posicionador de v\u00e1lvula inteligente com CPU pode lidar com a opera\u00e7\u00e3o inteligente, por exemplo, pode realizar a compensa\u00e7\u00e3o n\u00e3o linear do canal direto, etc. O posicionador de v\u00e1lvula el\u00e9trica de barramento de campo tamb\u00e9m pode realizar o m\u00f3dulo de fun\u00e7\u00e3o como PID para realizar a opera\u00e7\u00e3o correspondente .<\/p>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/globe-valve\/\">Fabricante de v\u00e1lvula globo - V\u00e1rios tipos de v\u00e1lvula globo<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/gate-valve\/\">Fabricante de v\u00e1lvula gaveta - v\u00e1rios tipos de v\u00e1lvula gaveta<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/ball-valve\/\">Fabricante de v\u00e1lvula esf\u00e9rica - V\u00e1rios tipos de v\u00e1lvula esf\u00e9rica<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/butterfly-valve\/\">Fabricante de v\u00e1lvula borboleta - v\u00e1rios tipos de v\u00e1lvula borboleta<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/balancing-valve\/\">V\u00e1lvula de balanceamento \u2013 V\u00e1lvula HVAC<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/check-valve\/\">Fabricante de v\u00e1lvula de reten\u00e7\u00e3o \u2013 V\u00e1rios tipos de v\u00e1lvula de reten\u00e7\u00e3o<\/a>\n\n<\/div>\n\n\n\n<p>Dez artigos antes e depois<\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-5-common-solenoid-valves-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 5 v\u00e1lvulas solen\u00f3ides comuns | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-5-characteristics-of-solenoid-valve-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 5 caracter\u00edsticas da v\u00e1lvula solen\u00f3ide | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-6-kinds-of-valves-commonly-used-in-long-distance-pipeline-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 6 tipos de v\u00e1lvulas comumente usadas em tubula\u00e7\u00f5es de longa dist\u00e2ncia | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-5-tips-for-choosing-a-home-valve-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 5 dicas para escolher uma v\u00e1lvula dom\u00e9stica | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-application-of-new-intelligent-valve-positioner-in-control-valve-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 Aplica\u00e7\u00e3o de novo posicionador de v\u00e1lvula inteligente em v\u00e1lvula de controle | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-modular-intelligent-electric-valve-controller-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 Controlador Modular Inteligente de V\u00e1lvula El\u00e9trica | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-the-development-course-of-valve-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 O Curso de Desenvolvimento da Valve | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-6-characteristics-of-valve-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 6 caracter\u00edsticas da v\u00e1lvula | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-application-of-valves-in-water-supply-system-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 Aplica\u00e7\u00e3o de V\u00e1lvulas em Sistemas de Abastecimento de \u00c1gua | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/news-difference-between-flange-connection-threaded-connection-and-welded-connection-api-approved-valve-manufacturer.html\/\">Not\u00edcias \u2013 Diferen\u00e7a entre conex\u00e3o flangeada, conex\u00e3o roscada e conex\u00e3o soldada | Fabricante de v\u00e1lvula aprovada pela API<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>O que \u00e9 um posicionador em v\u00e1lvula de controle? Um posicionador de v\u00e1lvula \u00e9 um dispositivo que faz interface com o controlador de processo e o atuador\u2026 <a title=\"Posicionador de v\u00e1lvula de controle pneum\u00e1tico\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/pt\/news-function-of-pneumatic-valve-positioner-api-approved-valve-manufacturer.html\" aria-label=\"Mais em Posicionador de V\u00e1lvula de Controle Pneum\u00e1tico\">Ler mais<\/a><\/p>","protected":false},"author":2,"featured_media":26426,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1],"tags":[3226],"class_list":["post-8562","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-cage-guided-control-valve","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/08\/Control-Valve-0-1024x768.jpg",1024,768,true],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/pt\/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":3226,"name":"Cage Guided Control Valve","slug":"cage-guided-control-valve","term_group":0,"term_taxonomy_id":3226,"taxonomy":"post_tag","description":"<!-- 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 CAGE GUIDED CONTROL VALVE PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_a0a547-00\"} \/-->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-cage-guided-control-valve\">What is Cage Guided Control Valve?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA more modern version of the globe valve design uses a piston-shaped plug inside a surrounding cage with ports cast or machined into it.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThese cage-guided globe valves throttle flow by uncovering more or less of the port area in the surrounding cage as the plug moves up and down. The cage also serves to guide the plug so the stem need not be subjected to lateral forces as in a stem-guided valve design.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe Cage guided control valve is a balanced valve that can be used as a dump valve, pressure regulator, suction controller, recirculation valve, and plunger lift applications. Compared to the stem-guided series, cage guided control valves feature larger trim sizes (available in 2\" to 10\" end connections) for higher valve coefficients (Cv). Cage guided control valves can be equipped with an optional electric drive or operated with compressed air to meet zero-emission requirements.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:image {\"align\":\"center\",\"id\":26426,\"width\":512,\"height\":384,\"sizeSlug\":\"large\",\"linkDestination\":\"none\"} -->\r\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img class=\"wp-image-26426\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/08\/Control-Valve-0-1024x768.jpg\" alt=\"\" width=\"512\" height=\"384\" \/><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Structure of Cage Guided Globe Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nCage-guided globe valves are available with both balanced and unbalanced plugs. A balanced plug has one or more ports drilled from top to bottom, allowing fluid pressure to equalize on both sides of the plug. This helps minimize the forces acting on the plug which must be overcome by the actuator:\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:image {\"align\":\"center\",\"id\":27294,\"width\":587,\"height\":336,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\r\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img class=\"wp-image-27294\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/11\/Cage-guided-globe-valves.webp\" alt=\"\" width=\"587\" height=\"336\" \/><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nUnbalanced plugs generate a force equal to the product of the differential pressure across the plug and the plug\u2019s area (F = PA), which may be quite substantial in some applications.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nBalanced plugs do not generate this same force because they equalize the pressure on both sides of the plug, however, they exhibit the disadvantage of one more leak path when the valve is in the fully closed position (through the balancing ports, past the piston ring, and out the cage ports):\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:image {\"align\":\"center\",\"id\":27295,\"width\":552,\"height\":274,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\r\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img class=\"wp-image-27295\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/11\/Cage-guided-globe-valves-principle.webp\" alt=\"\" width=\"552\" height=\"274\" \/><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThus, balanced and unbalanced cage-guided globe valves exhibit similar characteristics to double ported and single-ported stem- or port-guided globe valves, and for similar reasons.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nBalanced cage guided valves are easy to position, just like double-ported stem-guided and port-guided globe valves.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nHowever, balanced cage-guided valves tend to leak more when in the shut position due to a greater number of leak paths, much the same as with double-ported stem-guided and port-guided globe valves.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Components of Cage Guide Globe Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list {\"ordered\":true} -->\r\n<ol>\r\n \t<li>Valve Trims<\/li>\r\n<\/ol>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nAccording to the needs of the working conditions, different materials and surface hardening treatments can easily be chosen to meet the requirements of each function module of trim to improve its performance of the corrosion, cavitation, and erosion resistance, and lengthen service life.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:list {\"ordered\":true,\"start\":2} -->\r\n<ol start=\"2\">\r\n \t<li>Valve body<\/li>\r\n<\/ol>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe body of LN8 series control valves consists of two passages from upper and lower, forming a shape like a letter \"S\". The design of an elliptical section reduces the flow resistance and turbulent flow to keep the flow fluent. The flap in the middle of the upper passage can reduce the eddy flow and increase the flow capacity.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:list {\"ordered\":true,\"start\":3} -->\r\n<ol start=\"3\">\r\n \t<li>Actuator<\/li>\r\n<\/ol>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe standard mate is a Multi-spring pneumatic diaphragm actuator, which can be used in many conditions with the features of strong output force, high reliability, long lifespan, and extensive application. The output force changes with the number of springs. The high-stress-resistant diaphragm, bearing maximum pressure of 0.5 MPa air supply, gives the control valve a reliable shutoff. This type of actuator has a long life cycle of more than 1 million times.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Features of Cage Guided Control Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Modular design concept, combining the American and Japanese schools of high-precision control and the German school of the modular concept.<\/li>\r\n \t<li>The cage valve inner cavity of the valve body is S-shaped distribution, smooth and without dead ends; there are guide wings inside the valve body, which can reduce the mutual force of the medium inside the valve body and reduce the occurrence of cavitation.<\/li>\r\n \t<li>The use of sleeve guidance, large guide diameter, smooth guidance, with good dynamic stability.<\/li>\r\n \t<li>The cage valve seat adopts a floating design, while the sealing surface adopts a tapered form to ensure good alignment of the sealing sub.<\/li>\r\n \t<li>Sleeve window control flow characteristics, flow characteristics control accurately.<\/li>\r\n \t<li>The structure of the inner part is balanced, allowing a large differential pressure, small operating force, and large flow capacity.<\/li>\r\n \t<li>Equipment, linear and quick-open flow characteristics are available.<\/li>\r\n \t<li>Good use in the temperature range of -80 to 593\u2103.<\/li>\r\n \t<li>And pipeline connection with RF, RJ, FM, and other flange types and SW, and BW welding types.<\/li>\r\n \t<li>The flange distance conforms to GB\/T 17213.3-2005 \/ IEC 60534-3-1:2000; or ISA S75.03-1992 standard.<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->","parent":0,"count":5,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}],"post_tag":[{"value":3226,"label":"Cage Guided Control Valve"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pneumatic Control Valve Positioner | 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\/news-function-of-pneumatic-valve-positioner-api-approved-valve-manufacturer.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pneumatic Control Valve Positioner | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"What is a Positioner in Control Valve? A valve positioner is a device that interfaces with the process controller and the actuator ... 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