{"id":14413,"date":"2025-12-06T20:00:00","date_gmt":"2025-12-06T12:00:00","guid":{"rendered":"https:\/\/www.xintaivalves.com\/?p=14413"},"modified":"2026-04-03T11:28:00","modified_gmt":"2026-04-03T03:28:00","slug":"wedge-gate-valve-types-applications","status":"publish","type":"post","link":"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/","title":{"rendered":"O que \u00e9 uma v\u00e1lvula de gaveta tipo cunha: como escolher o tipo certo para sua aplica\u00e7\u00e3o"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar \u00edndice de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#What_is_a_Wedge_Gate_Valve\" >O que \u00e9 uma v\u00e1lvula de gaveta tipo cunha?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Main_Types_of_Wedge_Gate_Valves\" >Principais tipos de v\u00e1lvulas de gaveta tipo cunha<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Solid_Rigid_Wedge\" >Cunha s\u00f3lida (r\u00edgida)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Flexible_Wedge\" >Cunha Flex\u00edvel<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Split_Wedge\" >Cunha dividida<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Key_Advantages_and_Limitations\" >Principais vantagens e limita\u00e7\u00f5es<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Advantages\" >Vantagens<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Limitations\" >Limita\u00e7\u00f5es<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#How_to_Choose_the_Right_Wedge_Gate_Valve\" >Como escolher a v\u00e1lvula de gaveta de cunha correta<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Match_Wedge_to_Temperature\" >Ajuste a cunha \u00e0 temperatura<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Gate_Valve_Wedge_Material_Selection\" >Sele\u00e7\u00e3o do material da cunha da v\u00e1lvula de gaveta<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Stem_and_Bonnet_Considerations\" >Considera\u00e7\u00f5es sobre a haste e a tampa<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/wedge-gate-valve-types-applications\/#Preventing_Failure_Thermal_Binding_Pressure_Locking\" >Preven\u00e7\u00e3o de falhas: liga\u00e7\u00e3o t\u00e9rmica e travamento por press\u00e3o.<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/www.xintaivalves.com\/pt\/products\/casting-wedge-gate-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvula de cunha<\/a> \u00c9 uma v\u00e1lvula de isolamento de m\u00faltiplas voltas que utiliza uma comporta c\u00f4nica para cortar os fluidos e vedar firmemente contra duas sedes inclinadas.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea precisa de uma v\u00e1lvula que proporcione um fechamento herm\u00e9tico em tubula\u00e7\u00f5es de vapor ou \u00e1gua de alta press\u00e3o sem restringir o fluxo quando aberta, esta \u00e9 a sua solu\u00e7\u00e3o industrial ideal.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ao contr\u00e1rio das v\u00e1lvulas de gaveta paralelas, que dependem exclusivamente da press\u00e3o da linha para vedar, uma v\u00e1lvula de gaveta tipo cunha utiliza a for\u00e7a mec\u00e2nica da haste para empurrar a cunha para baixo, garantindo uma veda\u00e7\u00e3o eficaz mesmo em sistemas de baixa press\u00e3o.<\/p>\n<p>Para aprofundar sua compreens\u00e3o sobre qual tipo se adequa \u00e0s suas necessidades, revise a explica\u00e7\u00e3o detalhada de <a href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/how-does-a-wedge-gate-valve-work\/\" title=\"como as v\u00e1lvulas gaveta de cunha operam\">como as v\u00e1lvulas gaveta de cunha operam<\/a> e como o design mec\u00e2nico influencia as caracter\u00edsticas de desempenho.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este guia detalha os designs espec\u00edficos de cunha, as op\u00e7\u00f5es de materiais e os truques operacionais para ajud\u00e1-lo a selecionar a v\u00e1lvula certa para sua instala\u00e7\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_Wedge_Gate_Valve\"><\/span>O que \u00e9 uma v\u00e1lvula de gaveta tipo cunha?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Al\u00e9m da sele\u00e7\u00e3o do tipo, sua escolha tamb\u00e9m deve considerar <a href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/gate-valve-material-selection-guide\/\" title=\"considera\u00e7\u00f5es de material para a sele\u00e7\u00e3o de v\u00e1lvulas gaveta\">considera\u00e7\u00f5es de material para a sele\u00e7\u00e3o de v\u00e1lvulas gaveta<\/a> para garantir que a v\u00e1lvula funcione de forma confi\u00e1vel durante toda a sua vida \u00fatil em sua aplica\u00e7\u00e3o espec\u00edfica.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Em sua ess\u00eancia, uma v\u00e1lvula de gaveta tipo cunha \u00e9 projetada para um \u00fanico prop\u00f3sito: interromper ou iniciar o fluxo.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e3o se trata de uma v\u00e1lvula de controle.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"474\" height=\"360\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/Wedge-Gate-Valve.webp\" alt=\"\" class=\"wp-image-14416\" style=\"width:200px\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/Wedge-Gate-Valve.webp 474w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/Wedge-Gate-Valve-300x228.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/Wedge-Gate-Valve-16x12.webp 16w\" sizes=\"(max-width: 474px) 100vw, 474px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Us\u00e1-lo para controlar o fluxo de fluidos \u00e9 uma receita para o desastre, pois o fluxo de alta velocidade ir\u00e1 erodir a parte inferior da cunha em um fen\u00f4meno chamado &quot;deforma\u00e7\u00e3o por tra\u00e7\u00e3o&quot;.\u201c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O nome \u201ccunha\u201d vem do formato do elemento de fechamento.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Em vez de serem planas como uma placa, as faces dos port\u00f5es s\u00e3o anguladas, normalmente em 5 graus.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ao girar o volante, a haste empurra essa cunha para baixo entre dois assentos angulares correspondentes no corpo da v\u00e1lvula.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Essa a\u00e7\u00e3o de cunha cria uma alta carga de veda\u00e7\u00e3o, raz\u00e3o pela qual essas v\u00e1lvulas s\u00e3o t\u00e3o eficazes na preven\u00e7\u00e3o de vazamentos.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Eles s\u00e3o <a href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/gate-valve\/gate-valve-flow-direction\/\" target=\"_blank\" rel=\"noreferrer noopener\">bidirecional<\/a>, Isso significa que podem bloquear o fluxo em ambas as dire\u00e7\u00f5es, tornando-as vers\u00e1teis para redes de tubula\u00e7\u00e3o complexas em usinas de energia e refinarias.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Main_Types_of_Wedge_Gate_Valves\"><\/span>Principais tipos de v\u00e1lvulas de gaveta tipo cunha<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nem todas as cunhas s\u00e3o iguais. O design interno da cunha determina se a sua v\u00e1lvula resistir\u00e1 a um choque t\u00e9rmico ou se travar\u00e1 completamente.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solid_Rigid_Wedge\"><\/span>Cunha s\u00f3lida (r\u00edgida)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/solid-gate-valve.webp\" alt=\"\" class=\"wp-image-14418\" style=\"width:200px\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/solid-gate-valve.webp 600w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/solid-gate-valve-300x300.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/solid-gate-valve-150x150.webp 150w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/solid-gate-valve-12x12.webp 12w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">A cunha maci\u00e7a \u00e9 o tipo mais comum e robusto. Trata-se de uma pe\u00e7a \u00fanica e s\u00f3lida de metal fundido.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por n\u00e3o possuir partes m\u00f3veis internas, \u00e9 incrivelmente dur\u00e1vel e resistente \u00e0 vibra\u00e7\u00e3o.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 a op\u00e7\u00e3o padr\u00e3o para sistemas de \u00e1gua, ar e \u00f3leo onde as temperaturas permanecem est\u00e1veis.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No entanto, sua rigidez \u00e9 seu calcanhar de Aquiles.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea usar uma cunha s\u00f3lida em uma linha de vapor de alta temperatura, a v\u00e1lvula pode fechar quando estiver quente e depois &quot;travar&quot; ao esfriar, um problema conhecido como travamento t\u00e9rmico.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Flexible_Wedge\"><\/span>Cunha Flex\u00edvel<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flexible-gate-valve.webp\" alt=\"\" class=\"wp-image-14419\" style=\"width:200px\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flexible-gate-valve.webp 600w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flexible-gate-valve-300x300.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flexible-gate-valve-150x150.webp 150w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2025\/12\/flexible-gate-valve-12x12.webp 12w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Para resolver o problema de fixa\u00e7\u00e3o t\u00e9rmica, os engenheiros desenvolveram a cunha flex\u00edvel.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta pe\u00e7a ainda \u00e9 constru\u00edda em uma \u00fanica pe\u00e7a, mas apresenta um sulco ou corte profundo ao redor do per\u00edmetro.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esse corte reduz a se\u00e7\u00e3o transversal, permitindo que as bordas externas da cunha se flexionem ligeiramente.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Essa flexibilidade permite que a cunha se ajuste ao desalinhamento da sede e, mais importante, que se contraia ligeiramente sem ficar presa quando o tubo esfria.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para sistemas de vapor ou qualquer aplica\u00e7\u00e3o com ciclos t\u00e9rmicos, uma cunha flex\u00edvel \u00e9 obrigat\u00f3ria.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Split_Wedge\"><\/span>Cunha dividida<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A cunha dividida consiste em dois discos separados que podem ser ajustados independentemente.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este design autoalinh\u00e1vel \u00e9 excelente para o manuseio de gases n\u00e3o condens\u00e1veis e l\u00edquidos corrosivos, nos quais o corpo da v\u00e1lvula pode sofrer deforma\u00e7\u00f5es leves sob a tens\u00e3o da tubula\u00e7\u00e3o.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 menos comum que os outros dois, mas de valor inestim\u00e1vel em aplica\u00e7\u00f5es qu\u00edmicas espec\u00edficas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Advantages_and_Limitations\"><\/span>Principais vantagens e limita\u00e7\u00f5es<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Compreender as vantagens e desvantagens \u00e9 crucial para a seguran\u00e7a do sistema.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages\"><\/span>Vantagens<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A principal vantagem de uma v\u00e1lvula de gaveta tipo cunha \u00e9 a sua efici\u00eancia em termos de fluidos.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quando totalmente aberta, a cunha se eleva completamente para fora do caminho do fluxo, resultando em uma queda de press\u00e3o m\u00ednima.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Isso o torna ideal para dutos que exigem &quot;limpeza&quot; (limpeza com pigs).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A for\u00e7a de cunha mec\u00e2nica tamb\u00e9m proporciona uma veda\u00e7\u00e3o mais firme em baixas press\u00f5es em compara\u00e7\u00e3o com as v\u00e1lvulas de gaveta paralelas, que necessitam de alta press\u00e3o do sistema para empurrar a gaveta contra a sede.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Limitations\"><\/span>Limita\u00e7\u00f5es<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Essas v\u00e1lvulas s\u00e3o lentas para operar.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Uma v\u00e1lvula de gaveta de grandes dimens\u00f5es pode exigir centenas de voltas para fechar, o que n\u00e3o \u00e9 ideal para cen\u00e1rios de desligamento de emerg\u00eancia.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elas tamb\u00e9m exigem um espa\u00e7o vertical consider\u00e1vel se voc\u00ea optar por um modelo com haste ascendente.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mais importante ainda, elas s\u00e3o propensas ao desgaste da sede se usadas para controle de acelera\u00e7\u00e3o; o fluido turbulento destruir\u00e1 rapidamente a superf\u00edcie de veda\u00e7\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Choose_the_Right_Wedge_Gate_Valve\"><\/span>Como escolher a v\u00e1lvula de gaveta de cunha correta<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Selecionar a v\u00e1lvula correta envolve mais do que apenas combinar o tamanho do tubo. \u00c9 preciso adequar o tipo de cunha e os materiais \u00e0s condi\u00e7\u00f5es do processo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Match_Wedge_to_Temperature\"><\/span>Ajuste a cunha \u00e0 temperatura<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Se o seu sistema opera abaixo de 121\u00b0C (250\u00b0F), uma cunha s\u00f3lida \u00e9 uma op\u00e7\u00e3o econ\u00f4mica e confi\u00e1vel.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para aplica\u00e7\u00f5es que exigem temperaturas mais elevadas, especialmente em tubula\u00e7\u00f5es de vapor em usinas de energia, especifique uma cunha flex\u00edvel para evitar travamentos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Gate_Valve_Wedge_Material_Selection\"><\/span>Sele\u00e7\u00e3o do material da cunha da v\u00e1lvula de gaveta<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O material da cunha da v\u00e1lvula de gaveta deve resistir tanto \u00e0 corros\u00e3o quanto ao desgaste.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para \u00e1gua e \u00f3leo padr\u00e3o, <a href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/what-is-wcb-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">A\u00e7o Carbono (WCB)<\/a> \u00e9 o padr\u00e3o da ind\u00fastria.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No entanto, a superf\u00edcie de apoio precisa ser mais dura que a cunha para evitar desgaste por atrito.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Procure por cunhas com revestimento duro de &quot;Stellite&quot; (uma liga de cobalto-cromo) nos assentos.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Em ambientes corrosivos, a substitui\u00e7\u00e3o por uma cunha de a\u00e7o inoxid\u00e1vel (CF8M) evita que a ferrugem se funda \u00e0 cunha durante longos per\u00edodos de inatividade.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Stem_and_Bonnet_Considerations\"><\/span>Considera\u00e7\u00f5es sobre a haste e a tampa<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Para fluidos corrosivos, escolha sempre um projeto de parafuso e garfo externos (OS&amp;Y).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Isso mant\u00e9m as roscas da haste fora do fluido, evitando a corros\u00e3o.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea tiver espa\u00e7o vertical limitado, uma haste n\u00e3o ascendente \u00e9 uma op\u00e7\u00e3o, mas esteja ciente de que as roscas ficar\u00e3o expostas ao fluido do processo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Preventing_Failure_Thermal_Binding_Pressure_Locking\"><\/span>Preven\u00e7\u00e3o de falhas: liga\u00e7\u00e3o t\u00e9rmica e travamento por press\u00e3o.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Um desafio espec\u00edfico dessas v\u00e1lvulas \u00e9 o &quot;travamento por press\u00e3o&quot;.\u201c&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Isso acontece quando o l\u00edquido fica preso na cavidade da tampa (o espa\u00e7o acima da cunha) e se expande devido ao calor, impedindo a abertura da v\u00e1lvula.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para evitar isso em aplica\u00e7\u00f5es vol\u00e1teis:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Fa\u00e7a um furo de al\u00edvio<\/strong>Pe\u00e7a ao fabricante para perfurar um pequeno orif\u00edcio de equaliza\u00e7\u00e3o de press\u00e3o no lado a montante da cunha.<\/li>\n\n\n\n<li><strong>Bypass externo<\/strong>Instale uma pequena linha de deriva\u00e7\u00e3o para equalizar a press\u00e3o entre a tampa e o tubo.<\/li>\n\n\n\n<li><strong>Procedimentos de aquecimento<\/strong>Evitar fechar a v\u00e1lvula completamente logo ap\u00f3s um funcionamento a quente pode ajudar, mas controles de engenharia, como cunhas flex\u00edveis, s\u00e3o mais seguros.<\/li>\n<\/ol>\n\n\n\n<div class=\"wp-block-cover is-light\" style=\"min-height:237px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"3000\" height=\"2000\" class=\"wp-block-cover__image-background wp-image-7802\" alt=\"\" src=\"https:\/\/xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001.webp\" data-object-fit=\"cover\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001.webp 3000w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-300x200.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-1024x683.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-768x512.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-1536x1024.webp 1536w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-2048x1365.webp 2048w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2023\/03\/6624793_32879001-18x12.webp 18w\" sizes=\"(max-width: 3000px) 100vw, 3000px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#e8e8e8\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-black-color has-text-color has-link-color wp-elements-10176f1e50fccd365deb8f276774936a wp-block-paragraph\" style=\"font-size:27px\"><strong>Personalize a v\u00e1lvula perfeita para seu projeto! Obtenha um or\u00e7amento e explore nossas op\u00e7\u00f5es personalizadas.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-left is-layout-flex wp-container-core-buttons-is-layout-63375db1 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-fill\"><a class=\"wp-block-button__link has-black-color has-text-color has-background has-link-color has-extra-small-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/www.xintaivalves.com\/pt\/industrial-valve-manufacturer\/\" style=\"border-radius:100px;background-color:#d70c19\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Explore solu\u00e7\u00f5es de v\u00e1lvulas<\/strong><\/a><\/div>\n<\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>A wedge gate valve is a multi-turn isolation valve that uses a tapered gate to slice through fluids and seal tightly against two inclined seats.&nbsp; If you need a valve that provides a drop-tight shut-off in high-pressure steam or water lines without restricting flow when open, this is your industrial workhorse.&nbsp; Unlike parallel slide valves [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":14414,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[238],"tags":[],"class_list":["post-14413","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate-valve"],"_links":{"self":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts\/14413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/comments?post=14413"}],"version-history":[{"count":5,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts\/14413\/revisions"}],"predecessor-version":[{"id":14883,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts\/14413\/revisions\/14883"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/media\/14414"}],"wp:attachment":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/media?parent=14413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/categories?post=14413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/tags?post=14413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}