![\"\"\/](\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074420-61d54c54d552c.jpg\")
<\/figure>\n<\/div>\n\n\n\n\nO que \u00e9 uma v\u00e1lvula de sede simples?<\/strong><\/strong><\/h2>\n\n\n\nUma v\u00e1lvula de sede \u00fanica tem uma sede \u00fanica e um obturador \u00fanico. Neste tipo de v\u00e1lvulas, a press\u00e3o do processo atinge o lado inferior do obturador, o que cria uma for\u00e7a ascendente na haste da v\u00e1lvula. O atuador desta v\u00e1lvula pode controlar esta for\u00e7a ou \u00e9 capaz de atuar contra a for\u00e7a criada pela press\u00e3o do processo. Assim, o atuador pode mover ou manter a haste para baixo, controlando esta for\u00e7a. O atuador nesta v\u00e1lvula deve ser capaz de controlar esta for\u00e7a, mas \u00e9 uma tarefa dif\u00edcil se a v\u00e1lvula for grande. Se a v\u00e1lvula for grande, a press\u00e3o criada tamb\u00e9m ser\u00e1 grande e o atuador tem de ser capaz de lidar com esta for\u00e7a. Por este motivo, a v\u00e1lvula de sede simples n\u00e3o \u00e9 utilizada para aplica\u00e7\u00f5es de alta press\u00e3o. As v\u00e1lvulas de sede simples s\u00e3o adequadas se necessitarmos de um grau de fecho mais elevado. As v\u00e1lvulas de sede simples ou v\u00e1lvulas de porta simples existem em v\u00e1rias formas: globo, angular, em barra, etc. A v\u00e1lvula de sede \u00fanica tem uma constru\u00e7\u00e3o guiada pelo topo e tem uma boa capacidade de fluxo do que as v\u00e1lvulas guiadas pelo topo e pelo fundo. A sele\u00e7\u00e3o de actuadores e obturadores para uma v\u00e1lvula de porta \u00fanica deve ser feita de acordo com a press\u00e3o do fluido.<\/p>\n\n\n\n
Vantagens das v\u00e1lvulas de sede simples<\/h2>\n\n\n\n- Proporciona uma elevada capacidade de alcance e um fecho estanque<\/li>
- Est\u00e1 dispon\u00edvel uma ficha revers\u00edvel<\/li><\/ul>\n\n\n\n
Desvantagens das v\u00e1lvulas de sede simples<\/h2>\n\n\n\n- \u00c9 necess\u00e1rio um grande atuador<\/li>
- A recupera\u00e7\u00e3o de press\u00e3o \u00e9 baixa<\/li>
- Utilizado apenas para aplica\u00e7\u00f5es de pequeno di\u00e2metro<\/li>
- A for\u00e7a necess\u00e1ria para acionar a haste \u00e9 elevada<\/li><\/ul>\n\n\n\n
Aplica\u00e7\u00f5es das v\u00e1lvulas de veda\u00e7\u00e3o simples<\/h2>\n\n\n\n
Estas v\u00e1lvulas s\u00e3o utilizadas para controlar uma vasta gama de par\u00e2metros de processo e, devido a esta carater\u00edstica, s\u00e3o utilizadas na produ\u00e7\u00e3o de petr\u00f3leo e g\u00e1s e na produ\u00e7\u00e3o de energia.<\/p>\n\n\n\n
O que \u00e9 uma v\u00e1lvula de sede dupla (v\u00e1lvula de duplo orif\u00edcio)?<\/h2>\n\n\n\n
Uma v\u00e1lvula de sede dupla \u00e9 uma v\u00e1lvula guiada superior e inferior e estas v\u00e1lvulas t\u00eam dois obturadores e duas sedes. Neste tipo de v\u00e1lvula, a press\u00e3o da linha actua para cima num obturador e para baixo no outro e, por isso, a for\u00e7a \u00e9 equilibrada. Estas v\u00e1lvulas s\u00e3o utilizadas para aplica\u00e7\u00f5es de alta press\u00e3o. As v\u00e1lvulas de duplo orif\u00edcio s\u00e3o v\u00e1lvulas de press\u00e3o equilibrada e podem fechar o obturador da v\u00e1lvula contra uma press\u00e3o de funcionamento mais elevada. N\u00e3o \u00e9 poss\u00edvel um fecho estanque como nas v\u00e1lvulas de sede simples. Estas v\u00e1lvulas t\u00eam uma resposta de caudal r\u00e1pida e maior capacidade do que as v\u00e1lvulas de sede simples e s\u00e3o utilizadas quando n\u00e3o \u00e9 necess\u00e1rio um fecho estanque. Nesta v\u00e1lvula, os dois orif\u00edcios n\u00e3o podem ser abertos ao mesmo tempo. As v\u00e1lvulas de duplo orif\u00edcio podem desviar o fluxo de uma \u00fanica linha de fluxo para uma ou mais sa\u00eddas.<\/p>\n\n\n\n
Vantagens das v\u00e1lvulas de sede dupla<\/h2>\n\n\n\n- Pode ser utilizado para v\u00e1lvulas maiores<\/li>
- Pode ser utilizado para servi\u00e7os de elevado caudal e alta press\u00e3o<\/li><\/ul>\n\n\n\n
Desvantagens das v\u00e1lvulas de sede dupla<\/h2>\n\n\n\n- N\u00e3o \u00e9 poss\u00edvel um fecho estanque<\/li>
- Devido \u00e0 eros\u00e3o e \u00e0 cavita\u00e7\u00e3o, as partes do corpo podem desgastar-se<\/li><\/ul>\n\n\n\n
Qual \u00e9 a diferen\u00e7a entre uma v\u00e1lvula de controlo de sede simples e de sede dupla?<\/h2>\n\n\n\n- 1) A v\u00e1lvula de controlo de sede simples tem apenas uma guarni\u00e7\u00e3o e um assento, a v\u00e1lvula de controlo de sede dupla tem duas guarni\u00e7\u00f5es e dois assentos.<\/li>
- 2) A v\u00e1lvula de controlo de sede simples tem uma pequena fuga e \u00e9 f\u00e1cil conseguir uma veda\u00e7\u00e3o e corte rigorosos; a v\u00e1lvula de controlo de sede dupla tem uma grande fuga.<\/li>
- 3) A v\u00e1lvula de controlo de sede simples permite uma pequena press\u00e3o diferencial; a v\u00e1lvula de controlo de sede dupla \u00e9 sujeita a uma pequena for\u00e7a de desequil\u00edbrio e permite uma grande press\u00e3o diferencial.<\/li>
- 4) A v\u00e1lvula de controlo de sede simples tem uma pequena capacidade de fluxo e a v\u00e1lvula de controlo de sede dupla tem uma grande capacidade de fluxo. Em compara\u00e7\u00e3o com outras v\u00e1lvulas de controlo do mesmo di\u00e2metro, a v\u00e1lvula de controlo de sede dupla pode passar mais fluido e a capacidade de fluxo da v\u00e1lvula de controlo de sede dupla do mesmo di\u00e2metro \u00e9 cerca de 20%-50% superior \u00e0 da v\u00e1lvula de controlo de sede simples.<\/li>
- 5) Devido ao grande impulso do fluido para a guarni\u00e7\u00e3o da v\u00e1lvula, ou seja, a for\u00e7a desequilibrada \u00e9 grande, pelo que, na aplica\u00e7\u00e3o de uma diferen\u00e7a de press\u00e3o elevada e de grande di\u00e2metro, n\u00e3o \u00e9 adequado utilizar uma v\u00e1lvula de controlo de sede simples; a v\u00e1lvula de controlo de sede dupla n\u00e3o \u00e9 adequada para aplica\u00e7\u00f5es de diferencial de press\u00e3o elevada. Devido ao percurso complexo do fluxo, n\u00e3o \u00e9 adequada para o controlo de meios que cont\u00eam fibras e fluidos de elevada viscosidade.<\/li><\/ul>\n\n\n\n
A sede da v\u00e1lvula de controlo pneum\u00e1tica de sede dupla tem tamp\u00f5es inferior e superior, e o fluido entra pelo lado esquerdo do corpo, passa pela sede da v\u00e1lvula e pelo tamp\u00e3o e sai pelo lado direito. Pode fluir mais fluido do que a habitual v\u00e1lvula de controlo de assento \u00fanico com di\u00e2metro nominal semelhante, e a capacidade de fluxo \u00e9 elevada em cerca de 20% a 25%. As for\u00e7as que actuam no obturador inferior e superior podem anular-se mutuamente, pelo que a press\u00e3o de desequil\u00edbrio \u00e9 pequena, a diferen\u00e7a de press\u00e3o de funcionamento \u00e9 grande.<\/p>\n\n\n\n
- 1. as op\u00e7\u00f5es da v\u00e1lvula de controlo de assento \u00fanico: a fuga \u00e9 pequena, a press\u00e3o desequilibrada \u00e9 grande, e tamb\u00e9m a diferen\u00e7a de press\u00e3o permitida \u00e9 menor em compara\u00e7\u00e3o com a v\u00e1lvula de assento duplo.<\/li>
- 2. As caracter\u00edsticas da v\u00e1lvula de controlo de sede dupla: grande diferen\u00e7a de press\u00e3o admiss\u00edvel. \u00c9 quase sempre especialmente adequada para aplica\u00e7\u00f5es com grandes caudais, quedas implac\u00e1veis e enormes fugas. <\/li><\/ul>\n\n\n\n\n
Etiquetas relacionadas :<\/h2>\n\n\n\n\n\nV\u00e1lvula ZECO<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula borboleta NBR<\/a>\n\n<\/div>\n\n\n\n\nO que s\u00e3o v\u00e1lvulas de controlo autom\u00e1ticas?<\/a>\n\n<\/div>\n\n\n\n\nDiferen\u00e7a entre a v\u00e1lvula de gaveta e a v\u00e1lvula de borboleta<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula de gaveta vs V\u00e1lvula de esfera<\/a>\n\n<\/div>\n\n\n\n\nO que \u00e9 uma v\u00e1lvula de globo?<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula de gaveta de acionamento manual Fabricante<\/a>\n\n<\/div>\n\n\n\n\nDiferen\u00e7a entre a v\u00e1lvula de gaveta e a v\u00e1lvula de borboleta<\/a>\n\n<\/div>\n\n\n\n\nO que \u00e9 uma v\u00e1lvula de gaveta?<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula de Globo vs V\u00e1lvula de Esfera<\/a>\n\n<\/div>\n\n\n\nDez artigos antes e depois<\/p>\n\n\n\n
A UE vai fornecer g\u00e1s \u00e0 Ucr\u00e2nia atrav\u00e9s da conduta de g\u00e1s Vojany - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\nA diferen\u00e7a entre a v\u00e1lvula de esfera flutuante e a v\u00e1lvula de esfera montada no munh\u00e3o - V\u00e1lvula Zeco | Fabricante de v\u00e1lvulas industriais<\/a><\/p>\n\n\n\nA Ucr\u00e2nia vai importar 7,23 metros c\u00fabicos de g\u00e1s - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\nComo calcular o tamanho da v\u00e1lvula de seguran\u00e7a (v\u00e1lvula de al\u00edvio de press\u00e3o) - Zeco Valve | Fabricante de v\u00e1lvulas industriais<\/a><\/p>\n\n\n\nA procura global de g\u00e1s aumentar\u00e1 anualmente em 2,2% - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\nA energia da tubula\u00e7\u00e3o de g\u00e1s da Sib\u00e9ria come\u00e7ar\u00e1 em agosto - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\nComo funciona um atuador de cilindro pneum\u00e1tico - V\u00e1lvula Zeco | Fabricante de v\u00e1lvulas industriais<\/a><\/p>\n\n\n\nA China ajuda o Turquemenist\u00e3o a melhorar a produ\u00e7\u00e3o de g\u00e1s - Zeco Valve | Fabricante de v\u00e1lvulas com aprova\u00e7\u00e3o API<\/a><\/p>\n\n\n\nO governo canadiano aprovou o oleoduto Northern Gateway - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\nAs caracter\u00edsticas da v\u00e1lvula de esfera de 3 vias - V\u00e1lvula Zeco | Fabricante de v\u00e1lvulas industriais<\/a><\/p>","protected":false},"excerpt":{"rendered":"A constru\u00e7\u00e3o da v\u00e1lvula de controlo \u00e9 essencialmente semelhante a um globo, esta v\u00e1lvula de controlo pode ser de sede simples ou de sede dupla. A partir do nome ... Ler mais<\/a><\/p>","protected":false},"author":2,"featured_media":12828,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[2368],"tags":[3149,2641,2645,2642,2643,2646,2647,2644],"class_list":["post-12829","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-control-valve","tag-actuated-globe-valve","tag-control-valve","tag-double-seat-valve","tag-double-seated-control-valve","tag-double-seated-valve","tag-single-seat-valve","tag-single-seated-control-valve","tag-single-seated-valve","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074420-61d54c54d552c.jpg",750,276,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/pt\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":2368,"name":"Control Valve","slug":"control-valve","term_group":0,"term_taxonomy_id":2368,"taxonomy":"category","description":"","parent":0,"count":12,"filter":"raw","cat_ID":2368,"category_count":12,"category_description":"","cat_name":"Control Valve","category_nicename":"control-valve","category_parent":0}],"tag_info":[{"term_id":3149,"name":"Actuated Globe Valve - Globe Control Valve","slug":"actuated-globe-valve","term_group":0,"term_taxonomy_id":3149,"taxonomy":"post_tag","description":"\r\nWhat is a Globe Control Valve?<\/h2>\r\n\r\n\r\n\r\n\r\nWhen precise control is needed, globe valves are the favorite in many industries. Globe valves use the linear motion of a plunger that seats in a seat in a plane that divides the upper and lower half of the valve. In 2-way globe valves, the lower half is connected to the inlet port, and the upper half is connected to the outlet. On 3-way globe valves, there is a third port directly below the seat. There are 2 different styles of globe valve, each for a specific function:\r\n\r\n\r\n\r\n\r\n\r\nGET ACTUATED GLOBE VALVE PRICE<\/strong><\/a>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n![\"\"](\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/08\/2-WAY-GLOBE-VALVE.png\")
<\/figure>\r\n\r\n\r\n<\/div>\r\n\r\n\r\n\r\n\r\n\r\n\r\n![\"\"](\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/08\/3-way-globe-valve.png\")
<\/figure>\r\n\r\n\r\n<\/div>\r\n\r\n\r\n<\/div>\r\n\r\n\r\n\r\nWhat is an Actuated Globe Valve?<\/h2>\r\n\r\n\r\n\r\n\r\nActuated globe valve is the most advanced available in design, features, performance, and cost-effectiveness. Its design includes superior proportional control characteristics and safety features for a wide variety of applications, ranging from common fluids to the most aggressive chemicals. Accurate fluid control is achieved by positioning the valve plug to vary the aperture between the plug and the seat ring. The valve design allows the use of different plug\/seat sets to provide desired flow versus travel characteristics. A wide range of controllable CV is available, from 0.23 to a maximum of 105. Reduced trim is an option.\r\n\r\n\r\n\r\n\r\nApplications of Actuated Globe Valves<\/h2>\r\n\r\n\r\n\r\n\r\nActuated Globe valves are available in a variety of sizes (NPS 1\/2 thru 36) and provide users with high performance and reliability. They can help solve an array of application needs from big to small, hot to cold, and general to severe.\r\n\r\n\r\n\r\n\r\n\r\nBonnets are available in different styles to accommodate different application temperatures. This primarily includes standard bonnets and optional extension bonnets, which may be used to protect packing materials when the valve is used in extremely hot or cold applications.\r\n\r\n\r\n\r\n\r\n\r\nThere are also special packing configurations for applications that require the packing system to maintain fugitive emission concentrations below environmental standards.\r\n\r\n\r\n\r\n\r\n\r\nSome of the most typical applications of globe valves include cooling water systems, fuel oil systems, feedwater or chemical feed systems, boiler, and main steam vents and drains, and turbine lube oil systems.\r\n\r\n","parent":0,"count":7,"filter":"raw"},{"term_id":2641,"name":"Control Valve","slug":"control-valve","term_group":0,"term_taxonomy_id":2641,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2645,"name":"double seat valve","slug":"double-seat-valve","term_group":0,"term_taxonomy_id":2645,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2642,"name":"double seated control valve","slug":"double-seated-control-valve","term_group":0,"term_taxonomy_id":2642,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2643,"name":"double seated valve","slug":"double-seated-valve","term_group":0,"term_taxonomy_id":2643,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2646,"name":"single seat valve","slug":"single-seat-valve","term_group":0,"term_taxonomy_id":2646,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2647,"name":"single seated control valve","slug":"single-seated-control-valve","term_group":0,"term_taxonomy_id":2647,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2644,"name":"single seated valve","slug":"single-seated-valve","term_group":0,"term_taxonomy_id":2644,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"}],"taxonomy_info":{"category":[{"value":2368,"label":"Control Valve"}],"post_tag":[{"value":3149,"label":"Actuated Globe Valve - Globe Control Valve"},{"value":2641,"label":"Control Valve"},{"value":2645,"label":"double seat valve"},{"value":2642,"label":"double seated control valve"},{"value":2643,"label":"double seated valve"},{"value":2646,"label":"single seat valve"},{"value":2647,"label":"single seated control valve"},{"value":2644,"label":"single seated valve"}]},"yoast_head":"\nThe difference between single seated & double seated control valves<\/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\/the-difference-between-single-seated-double-seated-control-valves-zeco-valve-industrial-valve-manufacturer.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The difference between single seated & double seated control valves\" \/>\n<meta property=\"og:description\" content=\"The control valve construction is mostly like a globe, this control valve could be either, single-seated or double seated. From the name ... Ler mais\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/pt\/the-difference-between-single-seated-double-seated-control-valves-zeco-valve-industrial-valve-manufacturer.html\" \/>\n<meta property=\"og:site_name\" content=\"ZECO Valve\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-05T07:44:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-08-11T06:29:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074420-61d54c54d552c.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"276\" \/>\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=\"4 minutos\">\n<script 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Difference Between Single Seated & Double Seated Control Valves – Zeco Valve\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/zecovalve.com\/#\/schema\/person\/f65555145e0ef282ff87649309aba6a3\",\"name\":\"Jerry\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. 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- Proporciona uma elevada capacidade de alcance e um fecho estanque<\/li>
- Est\u00e1 dispon\u00edvel uma ficha revers\u00edvel<\/li><\/ul>\n\n\n\n
Desvantagens das v\u00e1lvulas de sede simples<\/h2>\n\n\n\n
- \u00c9 necess\u00e1rio um grande atuador<\/li>
- A recupera\u00e7\u00e3o de press\u00e3o \u00e9 baixa<\/li>
- Utilizado apenas para aplica\u00e7\u00f5es de pequeno di\u00e2metro<\/li>
- A for\u00e7a necess\u00e1ria para acionar a haste \u00e9 elevada<\/li><\/ul>\n\n\n\n
Aplica\u00e7\u00f5es das v\u00e1lvulas de veda\u00e7\u00e3o simples<\/h2>\n\n\n\n
Estas v\u00e1lvulas s\u00e3o utilizadas para controlar uma vasta gama de par\u00e2metros de processo e, devido a esta carater\u00edstica, s\u00e3o utilizadas na produ\u00e7\u00e3o de petr\u00f3leo e g\u00e1s e na produ\u00e7\u00e3o de energia.<\/p>\n\n\n\n
O que \u00e9 uma v\u00e1lvula de sede dupla (v\u00e1lvula de duplo orif\u00edcio)?<\/h2>\n\n\n\n
Uma v\u00e1lvula de sede dupla \u00e9 uma v\u00e1lvula guiada superior e inferior e estas v\u00e1lvulas t\u00eam dois obturadores e duas sedes. Neste tipo de v\u00e1lvula, a press\u00e3o da linha actua para cima num obturador e para baixo no outro e, por isso, a for\u00e7a \u00e9 equilibrada. Estas v\u00e1lvulas s\u00e3o utilizadas para aplica\u00e7\u00f5es de alta press\u00e3o. As v\u00e1lvulas de duplo orif\u00edcio s\u00e3o v\u00e1lvulas de press\u00e3o equilibrada e podem fechar o obturador da v\u00e1lvula contra uma press\u00e3o de funcionamento mais elevada. N\u00e3o \u00e9 poss\u00edvel um fecho estanque como nas v\u00e1lvulas de sede simples. Estas v\u00e1lvulas t\u00eam uma resposta de caudal r\u00e1pida e maior capacidade do que as v\u00e1lvulas de sede simples e s\u00e3o utilizadas quando n\u00e3o \u00e9 necess\u00e1rio um fecho estanque. Nesta v\u00e1lvula, os dois orif\u00edcios n\u00e3o podem ser abertos ao mesmo tempo. As v\u00e1lvulas de duplo orif\u00edcio podem desviar o fluxo de uma \u00fanica linha de fluxo para uma ou mais sa\u00eddas.<\/p>\n\n\n\n
Vantagens das v\u00e1lvulas de sede dupla<\/h2>\n\n\n\n
- Pode ser utilizado para v\u00e1lvulas maiores<\/li>
- Pode ser utilizado para servi\u00e7os de elevado caudal e alta press\u00e3o<\/li><\/ul>\n\n\n\n
Desvantagens das v\u00e1lvulas de sede dupla<\/h2>\n\n\n\n
- N\u00e3o \u00e9 poss\u00edvel um fecho estanque<\/li>
- Devido \u00e0 eros\u00e3o e \u00e0 cavita\u00e7\u00e3o, as partes do corpo podem desgastar-se<\/li><\/ul>\n\n\n\n
Qual \u00e9 a diferen\u00e7a entre uma v\u00e1lvula de controlo de sede simples e de sede dupla?<\/h2>\n\n\n\n
- 1) A v\u00e1lvula de controlo de sede simples tem apenas uma guarni\u00e7\u00e3o e um assento, a v\u00e1lvula de controlo de sede dupla tem duas guarni\u00e7\u00f5es e dois assentos.<\/li>
- 2) A v\u00e1lvula de controlo de sede simples tem uma pequena fuga e \u00e9 f\u00e1cil conseguir uma veda\u00e7\u00e3o e corte rigorosos; a v\u00e1lvula de controlo de sede dupla tem uma grande fuga.<\/li>
- 3) A v\u00e1lvula de controlo de sede simples permite uma pequena press\u00e3o diferencial; a v\u00e1lvula de controlo de sede dupla \u00e9 sujeita a uma pequena for\u00e7a de desequil\u00edbrio e permite uma grande press\u00e3o diferencial.<\/li>
- 4) A v\u00e1lvula de controlo de sede simples tem uma pequena capacidade de fluxo e a v\u00e1lvula de controlo de sede dupla tem uma grande capacidade de fluxo. Em compara\u00e7\u00e3o com outras v\u00e1lvulas de controlo do mesmo di\u00e2metro, a v\u00e1lvula de controlo de sede dupla pode passar mais fluido e a capacidade de fluxo da v\u00e1lvula de controlo de sede dupla do mesmo di\u00e2metro \u00e9 cerca de 20%-50% superior \u00e0 da v\u00e1lvula de controlo de sede simples.<\/li>
- 5) Devido ao grande impulso do fluido para a guarni\u00e7\u00e3o da v\u00e1lvula, ou seja, a for\u00e7a desequilibrada \u00e9 grande, pelo que, na aplica\u00e7\u00e3o de uma diferen\u00e7a de press\u00e3o elevada e de grande di\u00e2metro, n\u00e3o \u00e9 adequado utilizar uma v\u00e1lvula de controlo de sede simples; a v\u00e1lvula de controlo de sede dupla n\u00e3o \u00e9 adequada para aplica\u00e7\u00f5es de diferencial de press\u00e3o elevada. Devido ao percurso complexo do fluxo, n\u00e3o \u00e9 adequada para o controlo de meios que cont\u00eam fibras e fluidos de elevada viscosidade.<\/li><\/ul>\n\n\n\n
A sede da v\u00e1lvula de controlo pneum\u00e1tica de sede dupla tem tamp\u00f5es inferior e superior, e o fluido entra pelo lado esquerdo do corpo, passa pela sede da v\u00e1lvula e pelo tamp\u00e3o e sai pelo lado direito. Pode fluir mais fluido do que a habitual v\u00e1lvula de controlo de assento \u00fanico com di\u00e2metro nominal semelhante, e a capacidade de fluxo \u00e9 elevada em cerca de 20% a 25%. As for\u00e7as que actuam no obturador inferior e superior podem anular-se mutuamente, pelo que a press\u00e3o de desequil\u00edbrio \u00e9 pequena, a diferen\u00e7a de press\u00e3o de funcionamento \u00e9 grande.<\/p>\n\n\n\n
- 1. as op\u00e7\u00f5es da v\u00e1lvula de controlo de assento \u00fanico: a fuga \u00e9 pequena, a press\u00e3o desequilibrada \u00e9 grande, e tamb\u00e9m a diferen\u00e7a de press\u00e3o permitida \u00e9 menor em compara\u00e7\u00e3o com a v\u00e1lvula de assento duplo.<\/li>
- 2. As caracter\u00edsticas da v\u00e1lvula de controlo de sede dupla: grande diferen\u00e7a de press\u00e3o admiss\u00edvel. \u00c9 quase sempre especialmente adequada para aplica\u00e7\u00f5es com grandes caudais, quedas implac\u00e1veis e enormes fugas. <\/li><\/ul>\n\n\n\n\n
Etiquetas relacionadas :<\/h2>\n\n\n\n\n
\nV\u00e1lvula ZECO<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula borboleta NBR<\/a>\n\n<\/div>\n\n\n\n\nO que s\u00e3o v\u00e1lvulas de controlo autom\u00e1ticas?<\/a>\n\n<\/div>\n\n\n\n\nDiferen\u00e7a entre a v\u00e1lvula de gaveta e a v\u00e1lvula de borboleta<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula de gaveta vs V\u00e1lvula de esfera<\/a>\n\n<\/div>\n\n\n\n\nO que \u00e9 uma v\u00e1lvula de globo?<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula de gaveta de acionamento manual Fabricante<\/a>\n\n<\/div>\n\n\n\n\nDiferen\u00e7a entre a v\u00e1lvula de gaveta e a v\u00e1lvula de borboleta<\/a>\n\n<\/div>\n\n\n\n\nO que \u00e9 uma v\u00e1lvula de gaveta?<\/a>\n\n<\/div>\n\n\n\n\nV\u00e1lvula de Globo vs V\u00e1lvula de Esfera<\/a>\n\n<\/div>\n\n\n\nDez artigos antes e depois<\/p>\n\n\n\n
A UE vai fornecer g\u00e1s \u00e0 Ucr\u00e2nia atrav\u00e9s da conduta de g\u00e1s Vojany - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\n
A diferen\u00e7a entre a v\u00e1lvula de esfera flutuante e a v\u00e1lvula de esfera montada no munh\u00e3o - V\u00e1lvula Zeco | Fabricante de v\u00e1lvulas industriais<\/a><\/p>\n\n\n\n
A Ucr\u00e2nia vai importar 7,23 metros c\u00fabicos de g\u00e1s - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\n
Como calcular o tamanho da v\u00e1lvula de seguran\u00e7a (v\u00e1lvula de al\u00edvio de press\u00e3o) - Zeco Valve | Fabricante de v\u00e1lvulas industriais<\/a><\/p>\n\n\n\n
A procura global de g\u00e1s aumentar\u00e1 anualmente em 2,2% - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\n
A energia da tubula\u00e7\u00e3o de g\u00e1s da Sib\u00e9ria come\u00e7ar\u00e1 em agosto - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\n
Como funciona um atuador de cilindro pneum\u00e1tico - V\u00e1lvula Zeco | Fabricante de v\u00e1lvulas industriais<\/a><\/p>\n\n\n\n
A China ajuda o Turquemenist\u00e3o a melhorar a produ\u00e7\u00e3o de g\u00e1s - Zeco Valve | Fabricante de v\u00e1lvulas com aprova\u00e7\u00e3o API<\/a><\/p>\n\n\n\n
O governo canadiano aprovou o oleoduto Northern Gateway - Zeco Valve | Fabricante de v\u00e1lvulas aprovado pela API<\/a><\/p>\n\n\n\n
As caracter\u00edsticas da v\u00e1lvula de esfera de 3 vias - V\u00e1lvula Zeco | Fabricante de v\u00e1lvulas industriais<\/a><\/p>","protected":false},"excerpt":{"rendered":"
A constru\u00e7\u00e3o da v\u00e1lvula de controlo \u00e9 essencialmente semelhante a um globo, esta v\u00e1lvula de controlo pode ser de sede simples ou de sede dupla. A partir do nome ... Ler mais<\/a><\/p>","protected":false},"author":2,"featured_media":12828,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[2368],"tags":[3149,2641,2645,2642,2643,2646,2647,2644],"class_list":["post-12829","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-control-valve","tag-actuated-globe-valve","tag-control-valve","tag-double-seat-valve","tag-double-seated-control-valve","tag-double-seated-valve","tag-single-seat-valve","tag-single-seated-control-valve","tag-single-seated-valve","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074420-61d54c54d552c.jpg",750,276,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/pt\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":2368,"name":"Control Valve","slug":"control-valve","term_group":0,"term_taxonomy_id":2368,"taxonomy":"category","description":"","parent":0,"count":12,"filter":"raw","cat_ID":2368,"category_count":12,"category_description":"","cat_name":"Control Valve","category_nicename":"control-valve","category_parent":0}],"tag_info":[{"term_id":3149,"name":"Actuated Globe Valve - Globe Control Valve","slug":"actuated-globe-valve","term_group":0,"term_taxonomy_id":3149,"taxonomy":"post_tag","description":"\r\n
What is a Globe Control Valve?<\/h2>\r\n\r\n\r\n\r\n\r\nWhen precise control is needed, globe valves are the favorite in many industries. Globe valves use the linear motion of a plunger that seats in a seat in a plane that divides the upper and lower half of the valve. In 2-way globe valves, the lower half is connected to the inlet port, and the upper half is connected to the outlet. On 3-way globe valves, there is a third port directly below the seat. There are 2 different styles of globe valve, each for a specific function:\r\n\r\n\r\n\r\n\r\n\r\nGET ACTUATED GLOBE VALVE PRICE<\/strong><\/a>\r\n\r\n\r\n\r\n\r\n
\r\n\r\n\r\n\r\n\r\n\r\n<\/figure>\r\n\r\n\r\n<\/div>\r\n\r\n\r\n\r\n\r\n\r\n\r\n<\/figure>\r\n\r\n\r\n<\/div>\r\n\r\n\r\n<\/div>\r\n\r\n\r\n\r\nWhat is an Actuated Globe Valve?<\/h2>\r\n\r\n\r\n\r\n\r\nActuated globe valve is the most advanced available in design, features, performance, and cost-effectiveness. Its design includes superior proportional control characteristics and safety features for a wide variety of applications, ranging from common fluids to the most aggressive chemicals. Accurate fluid control is achieved by positioning the valve plug to vary the aperture between the plug and the seat ring. The valve design allows the use of different plug\/seat sets to provide desired flow versus travel characteristics. A wide range of controllable CV is available, from 0.23 to a maximum of 105. Reduced trim is an option.\r\n\r\n\r\n\r\n\r\n
Applications of Actuated Globe Valves<\/h2>\r\n\r\n\r\n\r\n\r\nActuated Globe valves are available in a variety of sizes (NPS 1\/2 thru 36) and provide users with high performance and reliability. They can help solve an array of application needs from big to small, hot to cold, and general to severe.\r\n\r\n\r\n\r\n\r\n\r\nBonnets are available in different styles to accommodate different application temperatures. This primarily includes standard bonnets and optional extension bonnets, which may be used to protect packing materials when the valve is used in extremely hot or cold applications.\r\n\r\n\r\n\r\n\r\n\r\nThere are also special packing configurations for applications that require the packing system to maintain fugitive emission concentrations below environmental standards.\r\n\r\n\r\n\r\n\r\n\r\nSome of the most typical applications of globe valves include cooling water systems, fuel oil systems, feedwater or chemical feed systems, boiler, and main steam vents and drains, and turbine lube oil systems.\r\n\r\n","parent":0,"count":7,"filter":"raw"},{"term_id":2641,"name":"Control Valve","slug":"control-valve","term_group":0,"term_taxonomy_id":2641,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2645,"name":"double seat valve","slug":"double-seat-valve","term_group":0,"term_taxonomy_id":2645,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2642,"name":"double seated control valve","slug":"double-seated-control-valve","term_group":0,"term_taxonomy_id":2642,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2643,"name":"double seated valve","slug":"double-seated-valve","term_group":0,"term_taxonomy_id":2643,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2646,"name":"single seat valve","slug":"single-seat-valve","term_group":0,"term_taxonomy_id":2646,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2647,"name":"single seated control valve","slug":"single-seated-control-valve","term_group":0,"term_taxonomy_id":2647,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2644,"name":"single seated valve","slug":"single-seated-valve","term_group":0,"term_taxonomy_id":2644,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"}],"taxonomy_info":{"category":[{"value":2368,"label":"Control Valve"}],"post_tag":[{"value":3149,"label":"Actuated Globe Valve - Globe Control Valve"},{"value":2641,"label":"Control Valve"},{"value":2645,"label":"double seat valve"},{"value":2642,"label":"double seated control valve"},{"value":2643,"label":"double seated valve"},{"value":2646,"label":"single seat valve"},{"value":2647,"label":"single seated control valve"},{"value":2644,"label":"single seated valve"}]},"yoast_head":"\n
The difference between single seated & double seated control valves<\/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\/the-difference-between-single-seated-double-seated-control-valves-zeco-valve-industrial-valve-manufacturer.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The difference between single seated & double seated control valves\" \/>\n<meta property=\"og:description\" content=\"The control valve construction is mostly like a globe, this control valve could be either, single-seated or double seated. From the name ... 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