{"id":4390,"date":"2026-07-07T14:03:52","date_gmt":"2026-07-07T06:03:52","guid":{"rendered":"https:\/\/www.pansvalve.com\/?p=4390"},"modified":"2026-07-21T16:39:51","modified_gmt":"2026-07-21T08:39:51","slug":"resilient-seated-butterfly-valve","status":"publish","type":"post","link":"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/","title":{"rendered":"V\u00e1lvulas borboleta com sede resiliente: Guia completo para aplica\u00e7\u00f5es em \u00e1gua e esgoto"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 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 \u00cdndice\"><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' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#What_Is_a_Resilient_Seated_Butterfly_Valve\" >O que \u00e9 uma v\u00e1lvula borboleta com sede resiliente?<\/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.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#How_Elastomer_Seats_Work_EPDM_NBR_Viton_PTFE\" >Como funcionam os assentos de elast\u00f4mero: EPDM, NBR, Viton, PTFE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#Applications_Water_and_Wastewater_HVAC_Chemical_Processing\" >Aplica\u00e7\u00f5es: \u00c1gua e Esgoto, HVAC (aquecimento, ventila\u00e7\u00e3o e ar condicionado), Processamento Qu\u00edmico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#Resilient_Seated_vs_High-Performance_Double_Offset_Butterfly_Valve\" >V\u00e1lvula borboleta de deslocamento duplo de alto desempenho com sede resiliente versus v\u00e1lvula borboleta de deslocamento duplo de alto desempenho<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#Temperature_and_Pressure_Limits_by_Seat_Material\" >Limites de temperatura e press\u00e3o por material do assento<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#Common_Failure_Modes_and_How_to_Avoid_Them\" >Modos de falha comuns e como evit\u00e1-los<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#Selection_Guide_Which_Seat_Material_for_Your_Fluid\" >Guia de sele\u00e7\u00e3o: Qual o material ideal para o assento do seu fluido?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#When_Your_Application_Needs_More_Than_a_Resilient_Seat\" >Quando seu aplicativo precisa de mais do que uma simples instala\u00e7\u00e3o resistente.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#Check_Our_High-Qulity_Butterfly_Valve_Series\" >Confira nossa s\u00e9rie de v\u00e1lvulas borboleta de alta qualidade.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/#Frequently_Asked_Questions\" >Perguntas frequentes<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">As especifica\u00e7\u00f5es para tratamento de \u00e1gua priorizam v\u00e1lvulas borboleta com sede resiliente por um motivo. N\u00e3o se trata de sofistica\u00e7\u00e3o, mas sim de resultados. Uma sede de elast\u00f4mero, um disco rotativo e veda\u00e7\u00e3o herm\u00e9tica em press\u00e3o moderada. Tr\u00eas elementos trabalhando em conjunto: baixo custo, montagem simples e confiabilidade dentro da faixa de opera\u00e7\u00e3o. \u00c9 por isso que esse tipo de v\u00e1lvula est\u00e1 presente em praticamente todos os projetos de \u00e1gua, esgoto e HVAC, independentemente da localiza\u00e7\u00e3o ou escala do projeto.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_a_Resilient_Seated_Butterfly_Valve\"><\/span>O que \u00e9 uma v\u00e1lvula borboleta com sede resiliente?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Disco. Haste. Sede de elast\u00f4mero. Corpo. Quatro componentes, e essa \u00e9 a v\u00e1lvula completa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O disco fica posicionado em uma haste central dentro do corpo da v\u00e1lvula. Posi\u00e7\u00e3o aberta: o disco gira paralelamente ao fluxo, permitindo que o fluido circule livremente ao seu redor. Posi\u00e7\u00e3o fechada: o disco gira 90 graus, com sua borda pressionando o revestimento de elast\u00f4mero. A sede se deforma ligeiramente sob essa press\u00e3o, preenchendo as irregularidades da superf\u00edcie da borda do disco e criando a veda\u00e7\u00e3o. Essa compress\u00e3o \u00e9 o que permite que uma v\u00e1lvula borboleta com sede resiliente alcance uma veda\u00e7\u00e3o herm\u00e9tica em faixas de press\u00e3o onde sedes met\u00e1licas apresentam vazamentos ou um custo significativamente maior para obter o mesmo resultado.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Elastomer_Seats_Work_EPDM_NBR_Viton_PTFE\"><\/span>Como funcionam os assentos de elast\u00f4mero: EPDM, NBR, Viton, PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Se a sede for inadequada, a v\u00e1lvula falha em servi\u00e7o. Se a sede for usada com o material correto, ela funciona por anos sem problemas. Quatro materiais diferentes atendem \u00e0 maioria das aplica\u00e7\u00f5es pr\u00e1ticas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O EPDM \u00e9 o material padr\u00e3o para \u00e1gua e esgoto. Resiste bem \u00e0 \u00e1gua, vapor, \u00e1cidos fracos e \u00e1lcalis. Suporta temperaturas de -40 \u00b0C a +120 \u00b0C. Uma v\u00e1lvula borboleta de EPDM funciona em sistemas de \u00e1gua pot\u00e1vel, esgoto, irriga\u00e7\u00e3o e refrigera\u00e7\u00e3o. Mantenha-a longe de fluidos \u00e0 base de petr\u00f3leo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O NBR \u00e9 adequado para \u00f3leos, combust\u00edveis e fluidos derivados de petr\u00f3leo. Apresenta melhor resist\u00eancia a \u00f3leos do que o EPDM. Sua temperatura m\u00e1xima de opera\u00e7\u00e3o \u00e9 de aproximadamente 80\u00b0C. Degrada-se mais rapidamente sob exposi\u00e7\u00e3o ao oz\u00f4nio e \u00e0s intemp\u00e9ries.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O Viton \u00e9 a solu\u00e7\u00e3o ideal onde o EPDM e o NBR falham. Resistente a produtos qu\u00edmicos agressivos, altas temperaturas e hidrocarbonetos. Suporta temperaturas de at\u00e9 180 \u00b0C. \u00c9 mais caro. Padr\u00e3o em processamento qu\u00edmico e em plataformas offshore.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O PTFE \u00e9 quimicamente inerte a quase tudo. Seu comportamento de veda\u00e7\u00e3o difere do da borracha, pois n\u00e3o se comprime da mesma maneira. \u00c9 utilizado em situa\u00e7\u00f5es onde a contamina\u00e7\u00e3o do fluido de processo por elast\u00f4meros \u00e9 inaceit\u00e1vel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Applications_Water_and_Wastewater_HVAC_Chemical_Processing\"><\/span>Aplica\u00e7\u00f5es: \u00c1gua e Esgoto, HVAC (aquecimento, ventila\u00e7\u00e3o e ar condicionado), Processamento Qu\u00edmico<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00eas raz\u00f5es pelas quais as v\u00e1lvulas borboleta com sede resiliente dominam os sistemas de \u00e1gua e esgoto: Custo. Simplicidade de instala\u00e7\u00e3o nos formatos wafer ou lug. Veda\u00e7\u00e3o confi\u00e1vel dentro da faixa de press\u00e3o real de opera\u00e7\u00e3o dos sistemas de \u00e1gua.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os sistemas HVAC utilizam essas v\u00e1lvulas em circuitos de \u00e1gua gelada, \u00e1gua quente e \u00e1gua de condensa\u00e7\u00e3o. O corpo tipo wafer se encaixa em salas de m\u00e1quinas compactas, onde as v\u00e1lvulas de gaveta n\u00e3o cabem. O processamento qu\u00edmico depende da escolha da sede. EPDM para contato com produtos qu\u00edmicos \u00e0 base de \u00e1gua. Viton ou PTFE para solventes, \u00e1cidos e hidrocarbonetos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resilient_Seated_vs_High-Performance_Double_Offset_Butterfly_Valve\"><\/span>V\u00e1lvula borboleta de deslocamento duplo de alto desempenho com sede resiliente versus v\u00e1lvula borboleta de deslocamento duplo de alto desempenho<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A ferramenta certa para a aplica\u00e7\u00e3o certa. A tabela abaixo mostra onde cada tipo se encaixa.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Fator<\/strong><\/td><td><strong>Resiliente Sentado<\/strong><\/td><td><a href=\"https:\/\/www.pansvalve.com\/pt\/products\/high-performance-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Duplo offset de alto desempenho<\/strong><\/a><\/td><\/tr><tr><td>Material do assento<\/td><td>Elast\u00f4mero (EPDM, NBR, Viton)<\/td><td>Metal ou RPTFE<\/td><\/tr><tr><td>Selagem<\/td><td>Estanque a bolhas em press\u00f5es baixas a m\u00e9dias.<\/td><td>Veda\u00e7\u00e3o herm\u00e9tica em alta press\u00e3o<\/td><\/tr><tr><td>Limite de temperatura<\/td><td>At\u00e9 180\u00b0C, dependendo do assento.<\/td><td>At\u00e9 600 \u00b0C com assento met\u00e1lico<\/td><\/tr><tr><td>Classifica\u00e7\u00e3o de press\u00e3o<\/td><td>PN10 a PN25 t\u00edpico<\/td><td>PN25 a PN100 e acima<\/td><\/tr><tr><td>Atrito durante a opera\u00e7\u00e3o<\/td><td>Maior contato com o assento durante toda a perman\u00eancia.<\/td><td>A a\u00e7\u00e3o da came, mais baixa, reduz o contato.<\/td><\/tr><tr><td>Custo<\/td><td>Mais baixo<\/td><td>Mais alto<\/td><\/tr><tr><td>Ideal para<\/td><td>\u00c1gua, climatiza\u00e7\u00e3o (HVAC), servi\u00e7os p\u00fablicos em geral<\/td><td>Petr\u00f3leo e g\u00e1s, vapor, alta press\u00e3o<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A v\u00e1lvula borboleta com sede macia \u00e9 adequada quando a press\u00e3o e a temperatura se mant\u00eam dentro da faixa de resist\u00eancia do elast\u00f4mero. Fora desses limites, a especifica\u00e7\u00e3o correta \u00e9 a de deslocamento duplo ou triplo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Temperature_and_Pressure_Limits_by_Seat_Material\"><\/span>Limites de temperatura e press\u00e3o por material do assento<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">EPDM: at\u00e9 120 \u00b0C, PN16 a PN25 dependendo do design do corpo. NBR: m\u00e1ximo de 80 \u00b0C. Viton: at\u00e9 180 \u00b0C. PTFE: faixa qu\u00edmica mais ampla, mas as limita\u00e7\u00f5es de press\u00e3o variam com a geometria da sede.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ao ultrapassar o limite de temperatura em uma sede de elast\u00f4mero, ela endurece, racha ou se deforma permanentemente. A degrada\u00e7\u00e3o t\u00e9rmica do elast\u00f4mero n\u00e3o \u00e9 revers\u00edvel. A v\u00e1lvula parece intacta externamente. A sede perde a capacidade de comprimir contra a borda do disco, resultando em vazamento.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Failure_Modes_and_How_to_Avoid_Them\"><\/span>Modos de falha comuns e como evit\u00e1-los<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A incompatibilidade qu\u00edmica \u00e9 a causa da maioria das falhas em servi\u00e7o. A sede incha, endurece ou racha quando exposta a um fluido fora de sua faixa de resist\u00eancia. N\u00e3o verifique a compatibilidade com uma categoria geral de fluidos. Verifique a compatibilidade com o fluido espec\u00edfico do sistema.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A corros\u00e3o na borda do disco causa vazamentos quando o material do disco \u00e9 inadequado para o processo. A borda corro\u00edda do disco n\u00e3o consegue se encaixar corretamente no elast\u00f4mero. Especifique o material e o revestimento do disco de acordo com a composi\u00e7\u00e3o qu\u00edmica do fluido desde o in\u00edcio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A falha da veda\u00e7\u00e3o da haste significa vazamento externo. Desgaste mec\u00e2nico, gaxeta incorreta ou opera\u00e7\u00e3o da v\u00e1lvula de controle de fluxo apenas na posi\u00e7\u00e3o totalmente aberta ou totalmente fechada tamb\u00e9m podem ser causados. Certifique-se de que o projeto da v\u00e1lvula seja compat\u00edvel com a opera\u00e7\u00e3o real antes de especific\u00e1-la.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selection_Guide_Which_Seat_Material_for_Your_Fluid\"><\/span>Guia de sele\u00e7\u00e3o: Qual o material ideal para o assento do seu fluido?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c1gua e esgoto<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e1lvula borboleta em EPDM de s\u00e9rie. Comprovada, com excelente rela\u00e7\u00e3o custo-benef\u00edcio e certificada para contato com \u00e1gua pot\u00e1vel na maioria dos mercados globais.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Petr\u00f3leo, \u00f3leos, combust\u00edveis<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Assento de NBR. Confirme o tipo espec\u00edfico de \u00f3leo em rela\u00e7\u00e3o aos dados de resist\u00eancia do NBR antes de especificar. Alguns \u00f3leos sint\u00e9ticos atacam o NBR mais rapidamente do que o esperado.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Produtos qu\u00edmicos agressivos, solventes, \u00e1cidos<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Viton em ambientes com temperaturas elevadas. PTFE em ambientes onde a pureza qu\u00edmica ou a resist\u00eancia extrema s\u00e3o fatores determinantes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vapor<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nem EPDM nem NBR. Uma v\u00e1lvula borboleta de alto desempenho com sede met\u00e1lica ou RPTFE, de duplo offset, \u00e9 a especifica\u00e7\u00e3o correta para vapor. As aplica\u00e7\u00f5es evolu\u00edram al\u00e9m do que uma v\u00e1lvula borboleta com sede resiliente pode suportar de forma confi\u00e1vel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_Your_Application_Needs_More_Than_a_Resilient_Seat\"><\/span>Quando seu aplicativo precisa de mais do que uma simples instala\u00e7\u00e3o resistente.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"525\" height=\"348\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/07\/image3-1.webp\" alt=\"Engenheiros de v\u00e1lvulas analisando desenhos t\u00e9cnicos.\" class=\"wp-image-4391\" srcset=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/07\/image3-1.webp 525w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/07\/image3-1-300x199.webp 300w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/07\/image3-1-18x12.webp 18w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A maioria das aplica\u00e7\u00f5es de \u00e1gua e HVAC se mant\u00e9m dentro dos limites suportados por uma v\u00e1lvula borboleta com sede resiliente. Algumas, por\u00e9m, n\u00e3o. Press\u00e3o acima de PN25. Temperatura acima de 180\u00b0C. Fluidos de processo que destroem elast\u00f4meros. Vapor. Hidrocarbonetos. Em qualquer uma dessas condi\u00e7\u00f5es, a sede de elast\u00f4mero deixa de ser a solu\u00e7\u00e3o ideal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.pansvalve.com\/pt\/butterfly-valve-manufacturer\/\" target=\"_blank\" rel=\"noreferrer noopener\">A PANS Valve fabrica v\u00e1lvulas borboleta.<\/a> para ambos os lados dessa linha. O <a href=\"https:\/\/www.pansvalve.com\/pt\/products\/high-performance-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvula borboleta de alto desempenho<\/a> Utiliza um design de duplo deslocamento que reduz o desgaste da sede e o torque de opera\u00e7\u00e3o. Adequado para tratamento de \u00e1gua, gera\u00e7\u00e3o de energia, processamento qu\u00edmico e HVAC. Suporta as mesmas condi\u00e7\u00f5es de uma v\u00e1lvula borboleta com sede macia e vai al\u00e9m, mesmo quando as condi\u00e7\u00f5es ultrapassam os limites do elast\u00f4mero.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para servi\u00e7os mais exigentes, a PANS tamb\u00e9m produz o <a href=\"https:\/\/www.pansvalve.com\/pt\/product\/three-eccentric-metal-hard-seal-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvula borboleta de veda\u00e7\u00e3o r\u00edgida de metal tri-exc\u00eantrico<\/a> Para aplica\u00e7\u00f5es de alta press\u00e3o, alta temperatura e corrosivas. E o <a href=\"https:\/\/www.pansvalve.com\/pt\/product\/full-metal-seated-bi-directional-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">V\u00e1lvula borboleta bidirecional com sede totalmente met\u00e1lica<\/a> Para veda\u00e7\u00e3o herm\u00e9tica sob press\u00e3o elevada em ambas as dire\u00e7\u00f5es do fluxo.<\/p>\n\n\n\n<div class=\"collection-container\">\n\n    <h2 class=\"collection-title\"><span class=\"ez-toc-section\" id=\"Check_Our_High-Qulity_Butterfly_Valve_Series\"><\/span>Confira nossa s\u00e9rie de v\u00e1lvulas borboleta de alta qualidade.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n    \n\n    <div class=\"product-grid\">\n\n        <div class=\"product-item\">\n\n            <a href=\"#\" target=\"_blank\">\n\n                <img decoding=\"async\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2024\/09\/1-Three-Eccentric-Metal-Hard-Seal-Butterfly-Valve_butt-weld-type.png\" \n\n                     alt=\"V\u00e1lvula borboleta de veda\u00e7\u00e3o r\u00edgida de metal tri-exc\u00eantrico\" class=\"grid-image\">\n\n                <p class=\"product-caption\">V\u00e1lvula borboleta de veda\u00e7\u00e3o r\u00edgida de metal tri-exc\u00eantrico<\/p>\n\n            <\/a>\n\n        <\/div>\n\n        \n\n        <div class=\"product-item\">\n\n            <a href=\"#\" target=\"_blank\">\n\n                <img decoding=\"async\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2024\/09\/Full-Metal-Seated-Bi-Directional-Butterfly-Valve.png\" \n\n                     alt=\"V\u00e1lvula borboleta bidirecional totalmente met\u00e1lica\" class=\"grid-image\">\n\n                <p class=\"product-caption\">V\u00e1lvula borboleta bidirecional totalmente met\u00e1lica<\/p>\n\n            <\/a>\n\n        <\/div>\n\n        \n\n        <div class=\"product-item\">\n\n            <a href=\"#\" target=\"_blank\">\n\n                <img decoding=\"async\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2024\/09\/High-Performance-Butterfly-Valve.png\" \n\n                     alt=\"V\u00e1lvula borboleta de alto desempenho\" class=\"grid-image\">\n\n                <p class=\"product-caption\">V\u00e1lvula borboleta de alto desempenho<\/p>\n\n            <\/a>\n\n        <\/div>\n\n    <\/div>\n\n    \n\n    <div class=\"button-center\">\n\n        <a href=\"#\" target=\"_blank\" class=\"collection-button\">Veja mais<\/a>\n\n    <\/div>\n\n<\/div>\n\n\n\n<style>\n\n\/* --- Collection Styles --- *\/\n\n.collection-container {\n\n    max-width: 1000px; \/* \u8bbe\u5b9a\u6700\u5927\u5bbd\u5ea6\uff0c\u9002\u5e94\u535a\u5ba2\u6b63\u6587 *\/\n\n    margin: 3rem auto;\n\n    padding: 2rem;\n\n    border: 1px solid #e0e0e0;\n\n    border-radius: 12px;\n\n    box-shadow: 0 6px 16px rgba(0,0,0,0.1);\n\n    font-family: 'Arial', sans-serif;\n\n}\n\n\n\n.collection-title {\n\n    text-align: center;\n\n    font-size: 2rem;\n\n    color: #d60c18; \/* \u4f7f\u7528\u54c1\u724c\u8272\u7a81\u51fa\u6807\u9898 *\/\n\n    margin-top: 0;\n\n    margin-bottom: 2rem;\n\n    font-weight: 700;\n\n}\n\n\n\n.product-grid {\n\n    display: flex;\n\n    justify-content: space-between; \/* \u786e\u4fdd\u9879\u76ee\u5747\u5300\u5206\u5e03 *\/\n\n    gap: 1.5rem; \/* \u9879\u76ee\u4e4b\u95f4\u7684\u95f4\u8ddd *\/\n\n    margin-bottom: 2rem;\n\n}\n\n\n\n.product-item {\n\n    flex: 1; \/* \u6bcf\u4e2a\u9879\u76ee\u5360\u636e\u76f8\u540c\u7684\u5bbd\u5ea6 *\/\n\n    text-align: center;\n\n    border-radius: 8px;\n\n    overflow: hidden;\n\n    transition: transform 0.3s ease;\n\n}\n\n\n\n.product-item:hover {\n\n    transform: translateY(-5px); \/* \u60ac\u505c\u4e0a\u6d6e\u6548\u679c *\/\n\n}\n\n\n\n.product-item a {\n\n    text-decoration: none;\n\n    color: #333;\n\n    display: block;\n\n}\n\n\n\n.grid-image {\n\n    width: 100%;\n\n    height: auto;\n\n    border-radius: 6px;\n\n    object-fit: contain;\n\n    background: #f9f9f9;\n\n    border: 1px solid #eee;\n\n    padding: 10px;\n\n}\n\n\n\n.product-caption {\n\n    margin-top: 0.8rem;\n\n    font-size: 0.95rem;\n\n    font-weight: bold;\n\n    color: #555;\n\n}\n\n\n\n\/* Button Styling (Similar to previous cards) *\/\n\n.button-center {\n\n    text-align: center;\n\n}\n\n\n\n.collection-button {\n\n    display: inline-block;\n\n    padding: 0.8rem 2.5rem;\n\n    background-color: white;\n\n    color: #d60c18;\n\n    border: none;\n\n    border-radius: 8px;\n\n    font-weight: bold;\n\n    font-size: 1.1rem;\n\n    text-decoration: none;\n\n    cursor: pointer;\n\n    transition: background-color 0.3s ease, box-shadow 0.3s ease;\n\n    box-shadow: 0 4px 8px rgba(0, 115, 230, 0.3);\n\n}\n\n<\/style>\n\n\n\n<p class=\"wp-block-paragraph\">Montagem de atuador ISO 5211 em todas as tr\u00eas op\u00e7\u00f5es. Atuadores el\u00e9tricos, pneum\u00e1ticos ou manuais conectam-se diretamente. Sem necessidade de adaptadores personalizados. 36 anos de experi\u00eancia na fabrica\u00e7\u00e3o de v\u00e1lvulas. Certifica\u00e7\u00f5es API e CE. Or\u00e7amento em 24 horas. <a href=\"https:\/\/www.pansvalve.com\/pt\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\">Entre em contato<\/a> e a PANS confirma a especifica\u00e7\u00e3o correta para as suas condi\u00e7\u00f5es.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Perguntas frequentes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Qual a diferen\u00e7a entre v\u00e1lvulas borboleta com sede resiliente e v\u00e1lvulas borboleta com sede met\u00e1lica?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A sede resiliente utiliza uma sede de elast\u00f4mero. Macia, compress\u00edvel e com veda\u00e7\u00e3o herm\u00e9tica em press\u00f5es moderadas. A sede met\u00e1lica utiliza uma superf\u00edcie de veda\u00e7\u00e3o r\u00edgida. Suporta press\u00f5es e temperaturas mais elevadas, mas custa mais e n\u00e3o veda t\u00e3o hermeticamente em baixas press\u00f5es. A escolha deve ser baseada nas condi\u00e7\u00f5es de opera\u00e7\u00e3o, n\u00e3o na prefer\u00eancia pessoal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">O que significa EPDM em v\u00e1lvulas borboleta?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Significa mon\u00f4mero de etileno propileno dieno. Uma borracha sint\u00e9tica. Material padr\u00e3o para sedes de v\u00e1lvulas borboleta de \u00e1gua e esgoto, pois resiste bem \u00e0 \u00e1gua, vapor e produtos qu\u00edmicos leves. N\u00e3o \u00e9 adequado para fluidos \u00e0 base de petr\u00f3leo. O uso de fluido inadequado pode causar a degrada\u00e7\u00e3o r\u00e1pida da sede.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Qual a press\u00e3o que uma v\u00e1lvula borboleta com sede resiliente pode suportar?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Normalmente, de PN10 a PN25. Depende do tamanho da v\u00e1lvula e do projeto do corpo. Se ultrapassar esse limite, a sede de elast\u00f4mero se deforma permanentemente, comprometendo a veda\u00e7\u00e3o. Verifique a press\u00e3o m\u00e1xima de opera\u00e7\u00e3o e a press\u00e3o de sobrepress\u00e3o antes de especificar. N\u00e3o assuma que a classifica\u00e7\u00e3o nominal cubra as condi\u00e7\u00f5es mais adversas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">O que causa vazamento em uma v\u00e1lvula borboleta?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Geralmente, trata-se de um destes tr\u00eas motivos: o material da sede \u00e9 quimicamente incompat\u00edvel com o fluido do processo; a borda do disco est\u00e1 corro\u00edda e n\u00e3o veda corretamente; ou houve danos mec\u00e2nicos devido ao aperto excessivo durante o fechamento. Verifique primeiro a compatibilidade do fluido. Isso elimina a maioria dos problemas de vazamento em servi\u00e7o antes mesmo que eles comecem.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-red-background-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.pansvalve.com\/pt\/contact-us\/\">Obtenha uma cota\u00e7\u00e3o<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Water treatment specs default to resilient seated butterfly valves for a reason. Not sophistication. Just results. An elastomer seat, a rotating disc, bubble-tight shutoff at moderate pressure. Three things working together. Low cost, simple assembly, reliable within its operating range. That is why this valve type shows up on almost every water, wastewater, and HVAC [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4392,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[190],"tags":[],"class_list":["post-4390","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-butterfly-valve"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Resilient Seated Butterfly Valves: Complete Guide for Water and Wastewater<\/title>\n<meta name=\"description\" content=\"Learn everything about resilient seated butterfly valves. Covers seat materials, EPDM butterfly valve selection, applications, and when soft seated butterfly valves reach their limits.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/resilient-seated-butterfly-valve\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Resilient Seated Butterfly Valves: Complete Guide for Water and Wastewater\" \/>\n<meta property=\"og:description\" content=\"Learn everything about resilient seated butterfly valves. 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