{"id":4375,"date":"2026-06-17T14:04:43","date_gmt":"2026-06-17T06:04:43","guid":{"rendered":"https:\/\/www.pansvalve.com\/?p=4375"},"modified":"2026-07-22T11:08:12","modified_gmt":"2026-07-22T03:08:12","slug":"ss-gate-valve-grade-comparison","status":"publish","type":"post","link":"https:\/\/www.pansvalve.com\/pt\/blog\/gate-valve\/ss-gate-valve-grade-comparison\/","title":{"rendered":"V\u00e1lvulas de gaveta em a\u00e7o inoxid\u00e1vel: graus CF8, CF8M, 316L, aplica\u00e7\u00f5es e compara\u00e7\u00e3o de resist\u00eancia \u00e0 corros\u00e3o"},"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\/gate-valve\/ss-gate-valve-grade-comparison\/#How_Do_You_Choose_The_Right_SS_Gate_Valve_Grade\" >Como escolher a classe correta de v\u00e1lvula de gaveta em a\u00e7o inoxid\u00e1vel?<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#Where_CF8_Makes_Sense\" >Onde o CF8 faz sentido<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#Why_CF8M_Is_Often_Chosen_For_Tougher_Service\" >Por que o CF8M \u00e9 frequentemente escolhido para servi\u00e7os mais exigentes?<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#Where_316L_Fits_Into_The_Order\" >Onde o a\u00e7o inoxid\u00e1vel 316L se encaixa no pedido?<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#Which_Stainless_Gate_Valve_Grade_Fits_Each_Service_Condition\" >Qual a classe de v\u00e1lvula de gaveta em a\u00e7o inoxid\u00e1vel mais adequada para cada condi\u00e7\u00e3o de servi\u00e7o?<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#Where_Are_Stainless_Steel_Gate_Valves_Commonly_Used\" >Onde as v\u00e1lvulas de gaveta de a\u00e7o inoxid\u00e1vel s\u00e3o comumente usadas?<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#What_Details_Should_Buyers_Send_Before_A_Stainless_Valve_Quote\" >Que detalhes os compradores devem enviar antes de solicitar um or\u00e7amento para v\u00e1lvulas de a\u00e7o inoxid\u00e1vel?<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#Grade_Selection_Questions_Buyers_Ask\" >Perguntas frequentes dos compradores sobre a sele\u00e7\u00e3o de grau<\/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\/gate-valve\/ss-gate-valve-grade-comparison\/#Match_The_Grade_To_The_Corrosion_Risk\" >Combine a classifica\u00e7\u00e3o com o risco de corros\u00e3o.<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Uma v\u00e1lvula de gaveta de a\u00e7o inoxid\u00e1vel n\u00e3o \u00e9 escolhida simplesmente porque a tubula\u00e7\u00e3o &quot;precisa de a\u00e7o inoxid\u00e1vel&quot;. A classe de a\u00e7o ainda precisa ser adequada ao fluido, ao m\u00e9todo de limpeza, ao n\u00edvel de cloreto, \u00e0 temperatura e ao ambiente do local. O CF8 funciona bem em servi\u00e7os moderados, enquanto o CF8M e o 316L s\u00e3o geralmente considerados quando o risco de corros\u00e3o, a exposi\u00e7\u00e3o a lavagens frequentes ou os requisitos de soldagem se tornam mais importantes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para servi\u00e7os de isolamento padr\u00e3o em a\u00e7o inoxid\u00e1vel, o PANS <a href=\"https:\/\/www.pansvalve.com\/pt\/blog\/gate-valve\/understanding-wedge-gate-valve\/\" type=\"link\" id=\"https:\/\/www.pansvalve.com\/blog\/gate-valve\/understanding-wedge-gate-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvula de cunha<\/a> \u00c9 uma p\u00e1gina de produto \u00fatil para consultar antecipadamente. Ela ajuda os compradores a conectar a discuss\u00e3o sobre o material com um projeto real de v\u00e1lvula de gaveta antes que os detalhes de acabamento, flange e testes sejam finalizados.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Do_You_Choose_The_Right_SS_Gate_Valve_Grade\"><\/span><strong>Como escolher a classe correta de v\u00e1lvula de gaveta em a\u00e7o inoxid\u00e1vel?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A palavra &quot;a\u00e7o inoxid\u00e1vel&quot; pode dar a entender que uma v\u00e1lvula est\u00e1 pronta para qualquer tipo de corros\u00e3o. \u00c9 a\u00ed que muitos erros relacionados a materiais come\u00e7am.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Uma v\u00e1lvula em um sistema de \u00e1gua limpa para uso interno n\u00e3o enfrenta as mesmas condi\u00e7\u00f5es que uma v\u00e1lvula pr\u00f3xima a ar salino, lavagem qu\u00edmica, sistemas de dosagem ou l\u00edquidos de processo estagnados. Esses detalhes alteram o comportamento do a\u00e7o inoxid\u00e1vel ao longo do tempo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Portanto, a sele\u00e7\u00e3o da especifica\u00e7\u00e3o deve come\u00e7ar pelo fluido. Em seguida, verifique a temperatura, o teor de cloreto, os produtos qu\u00edmicos de limpeza, a press\u00e3o e se o l\u00edquido pode permanecer dentro da v\u00e1lvula ap\u00f3s o desligamento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A norma ASTM A351 \u00e9 frequentemente utilizada para pe\u00e7as fundidas de a\u00e7o inoxid\u00e1vel pressurizadas. A especifica\u00e7\u00e3o abrange pe\u00e7as fundidas de a\u00e7o austen\u00edtico para v\u00e1lvulas, flanges, conex\u00f5es e outras pe\u00e7as que suportam press\u00e3o. Ela tamb\u00e9m relaciona a sele\u00e7\u00e3o da classe de a\u00e7o \u00e0s condi\u00e7\u00f5es de servi\u00e7o e \u00e0 resist\u00eancia \u00e0 corros\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Where_CF8_Makes_Sense\"><\/span><strong>Onde o CF8 faz sentido<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o inoxid\u00e1vel CF8 \u00e9 comumente usado quando a tubula\u00e7\u00e3o precisa de melhor resist\u00eancia \u00e0 corros\u00e3o do que o a\u00e7o carbono, mas o servi\u00e7o ainda \u00e9 relativamente brando. \u00c9 frequentemente comparado ao a\u00e7o inoxid\u00e1vel fundido 304.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este tipo de a\u00e7o inoxid\u00e1vel \u00e9 adequado para \u00e1gua limpa, ar, fluidos industriais leves e algumas aplica\u00e7\u00f5es qu\u00edmicas moderadas. Ele oferece um equil\u00edbrio \u00fatil entre resist\u00eancia \u00e0 corros\u00e3o e custo, especialmente quando o projeto n\u00e3o justifica o uso de um a\u00e7o inoxid\u00e1vel de liga mais alta.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A precau\u00e7\u00e3o \u00e9 simples: o CF8 n\u00e3o deve ser tratado como uma solu\u00e7\u00e3o milagrosa. Se cloretos se acumularem na v\u00e1lvula, o l\u00edquido ficar estagnado ou produtos qu\u00edmicos de limpeza permanecerem na superf\u00edcie, o CF8 pode perder sua margem de seguran\u00e7a. A v\u00e1lvula pode ser instalada sem problemas, mas apresentar corros\u00e3o posteriormente, durante o uso.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_CF8M_Is_Often_Chosen_For_Tougher_Service\"><\/span><strong>Por que o CF8M \u00e9 frequentemente escolhido para servi\u00e7os mais exigentes?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O CF8M \u00e9 frequentemente comparado ao a\u00e7o inoxid\u00e1vel fundido 316. Seu teor de molibd\u00eanio confere-lhe melhor resist\u00eancia do que o CF8 em muitos ambientes que cont\u00eam cloretos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por isso, a escolha entre CF8 e CF8M \u00e9 importante em instala\u00e7\u00f5es costeiras, sistemas de \u00e1gua de resfriamento, linhas de produtos qu\u00edmicos e \u00e1reas de lavagem. Uma v\u00e1lvula de gaveta CF8M pode ter um custo inicial mais elevado, mas pode ser mais f\u00e1cil de proteger quando o risco de corros\u00e3o faz parte do trabalho.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O guia sobre a\u00e7o inoxid\u00e1vel do Nickel Institute explica como os elementos de liga afetam as propriedades do a\u00e7o inoxid\u00e1vel, incluindo a resist\u00eancia \u00e0 corros\u00e3o. Na sele\u00e7\u00e3o de v\u00e1lvulas, isso significa que a composi\u00e7\u00e3o qu\u00edmica deve ser influenciada pela exposi\u00e7\u00e3o, e n\u00e3o pelo h\u00e1bito.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Where_316L_Fits_Into_The_Order\"><\/span><strong>Onde o a\u00e7o inoxid\u00e1vel 316L se encaixa no pedido?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o inoxid\u00e1vel 316L \u00e9 frequentemente mencionado em projetos de v\u00e1lvulas de a\u00e7o inoxid\u00e1vel, mas nem sempre \u00e9 o termo correto para todas as partes da v\u00e1lvula.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CF8M \u00e9 um a\u00e7o fundido. 316L \u00e9 um a\u00e7o forjado com baixo teor de carbono. Geralmente \u00e9 associado a pe\u00e7as fabricadas ou soldadas, em vez de corpos de v\u00e1lvulas fundidos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O \u201cL\u201d significa baixo teor de carbono. Isso pode ser \u00fatil quando h\u00e1 soldagem envolvida, pois um menor teor de carbono reduz certos riscos de corros\u00e3o em \u00e1reas soldadas. Se um projeto incluir extens\u00f5es soldadas, conjuntos fabricados ou uma exig\u00eancia direta de a\u00e7o inoxid\u00e1vel 316L, especifique isso claramente na solicita\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para um corpo de v\u00e1lvula fundido, confirme se CF8M \u00e9 a classe de fundi\u00e7\u00e3o aceit\u00e1vel antes de prosseguir com o pedido.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Which_Stainless_Gate_Valve_Grade_Fits_Each_Service_Condition\"><\/span><strong>Qual a classe de v\u00e1lvula de gaveta em a\u00e7o inoxid\u00e1vel mais adequada para cada condi\u00e7\u00e3o de servi\u00e7o?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Use esta tabela como um filtro r\u00e1pido antes de solicitar o pre\u00e7o. O material final ainda precisa seguir as especifica\u00e7\u00f5es do projeto.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Condi\u00e7\u00f5es de servi\u00e7o<\/strong><\/td><td><strong>Avalie primeiro<\/strong><\/td><td><strong>Por que pode ser adequado<\/strong><\/td><\/tr><tr><td>\u00c1gua limpa ou servi\u00e7o interno suave<\/td><td>A\u00e7o inoxid\u00e1vel CF8<\/td><td>Boa resist\u00eancia \u00e0 corros\u00e3o sem a necessidade de recorrer a uma liga de custo mais elevado.<\/td><\/tr><tr><td>Exposi\u00e7\u00e3o ao ar costeiro ou ao cloreto<\/td><td>CF8M<\/td><td>Melhor prote\u00e7\u00e3o do que o CF8 em muitas condi\u00e7\u00f5es de cloreto.<\/td><\/tr><tr><td>limpeza qu\u00edmica ou lavagem<\/td><td>CF8M ou a\u00e7o inoxid\u00e1vel especificado<\/td><td>Maior margem quando o res\u00edduo permanece na superf\u00edcie.<\/td><\/tr><tr><td>Conjuntos soldados de a\u00e7o inoxid\u00e1vel<\/td><td>a\u00e7o inoxid\u00e1vel 316L<\/td><td>A baixa emiss\u00e3o de carbono ajuda a atender \u00e0s necessidades relacionadas \u00e0 soldagem.<\/td><\/tr><tr><td>Servi\u00e7o com produtos qu\u00edmicos agressivos ou alto teor de cloreto<\/td><td>A\u00e7o inoxid\u00e1vel especial ou liga met\u00e1lica<\/td><td>Os a\u00e7os inoxid\u00e1veis padr\u00e3o podem n\u00e3o ser suficientes.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A quest\u00e3o n\u00e3o \u00e9 comprar sempre o modelo mais caro. A quest\u00e3o \u00e9 evitar usar um modelo de baixa qualidade em uma linha que ir\u00e1 castig\u00e1-lo.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724710-1024x512.webp\" alt=\"Aplica\u00e7\u00f5es comuns para v\u00e1lvulas de gaveta de a\u00e7o inoxid\u00e1vel\" class=\"wp-image-4377\" style=\"width:564px;height:auto\" srcset=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724710-1024x512.webp 1024w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724710-300x150.webp 300w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724710-768x384.webp 768w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724710-18x9.webp 18w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724710.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Where_Are_Stainless_Steel_Gate_Valves_Commonly_Used\"><\/span><strong>Onde as v\u00e1lvulas de gaveta de a\u00e7o inoxid\u00e1vel s\u00e3o comumente usadas?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As v\u00e1lvulas de gaveta em a\u00e7o inoxid\u00e1vel s\u00e3o utilizadas quando a tubula\u00e7\u00e3o necessita de resist\u00eancia \u00e0 corros\u00e3o, controle mais preciso do material ou melhor prote\u00e7\u00e3o contra o ambiente externo. A classe adequada depende do fluido e das condi\u00e7\u00f5es do local.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>As v\u00e1lvulas de gaveta de a\u00e7o inoxid\u00e1vel s\u00e3o utilizadas em \u00e1reas de alimentos, bebidas e lavagem?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A lavagem com \u00e1gua pode ser mais agressiva para o a\u00e7o inoxid\u00e1vel do que parece. A composi\u00e7\u00e3o qu\u00edmica da \u00e1gua, os produtos qu\u00edmicos de limpeza e os res\u00edduos de cloreto s\u00e3o fatores importantes. O CF8M costuma ser mais seguro que o CF8 quando h\u00e1 fluidos de limpeza ou cloretos presentes no ambiente.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>As v\u00e1lvulas de gaveta de a\u00e7o inoxid\u00e1vel s\u00e3o utilizadas em instala\u00e7\u00f5es de tratamento de \u00e1gua e em \u00e1reas costeiras?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">As v\u00e1lvulas de tratamento de \u00e1gua podem ficar expostas a desinfetantes, cloretos, zonas de estagna\u00e7\u00e3o e ao ar livre. Locais costeiros adicionam ar salgado. Nessas aplica\u00e7\u00f5es, o CF8M costuma ser um ponto de partida mais robusto do que o CF8, a menos que a norma do projeto especifique o contr\u00e1rio.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>As v\u00e1lvulas de gaveta de a\u00e7o inoxid\u00e1vel s\u00e3o utilizadas em linhas qu\u00edmicas, de energia e de processos?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">As instala\u00e7\u00f5es qu\u00edmicas e de gera\u00e7\u00e3o de energia geralmente exigem uma an\u00e1lise de materiais mais rigorosa. O fluido, a concentra\u00e7\u00e3o e a temperatura devem ser especificados claramente. Para aplica\u00e7\u00f5es sens\u00edveis a vazamentos, os compradores tamb\u00e9m podem consultar o PANS (Plano de Avalia\u00e7\u00e3o de Seguran\u00e7a de Materiais).<a href=\"https:\/\/www.pansvalve.com\/pt\/products\/bellow-sealed-gate-valve\/\"> abaixo da v\u00e1lvula de comporta selada<\/a> quando a veda\u00e7\u00e3o da haste e a escolha do material s\u00e3o fatores importantes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Details_Should_Buyers_Send_Before_A_Stainless_Valve_Quote\"><\/span><strong>Que detalhes os compradores devem enviar antes de solicitar um or\u00e7amento para v\u00e1lvulas de a\u00e7o inoxid\u00e1vel?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uma consulta sobre v\u00e1lvulas de a\u00e7o inoxid\u00e1vel deve incluir o fluido, a concentra\u00e7\u00e3o, o teor de cloreto (se conhecido), a temperatura de trabalho e a press\u00e3o., <a href=\"https:\/\/www.pansvalve.com\/pt\/blog\/butterfly-valve\/understanding-valve-sizing-for-optimal-selection\/\" type=\"link\" id=\"https:\/\/www.pansvalve.com\/blog\/butterfly-valve\/understanding-valve-sizing-for-optimal-selection\/\" target=\"_blank\" rel=\"noreferrer noopener\">tamanho da v\u00e1lvula<\/a>, norma do flange, m\u00e9todo de opera\u00e7\u00e3o, grau de material exigido e documentos de teste.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A norma ASME B16.34 <a href=\"https:\/\/www.pansvalve.com\/pt\/blog\/gate-valve\/7-key-api-standards-for-gate-valves\/\" type=\"link\" id=\"https:\/\/www.pansvalve.com\/blog\/gate-valve\/7-key-api-standards-for-gate-valves\/\" target=\"_blank\" rel=\"noreferrer noopener\">padr\u00e3o de v\u00e1lvula<\/a> \u00c9 \u00fatil porque abrange classifica\u00e7\u00f5es de press\u00e3o e temperatura, materiais, testes e marca\u00e7\u00e3o de v\u00e1lvulas. Isso ajuda a relacionar a sele\u00e7\u00e3o do grau de a\u00e7o inoxid\u00e1vel com os limites de press\u00e3o e temperatura.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para avalia\u00e7\u00e3o da corros\u00e3o, o guia de corros\u00e3o de a\u00e7o inoxid\u00e1vel da Outokumpu observa que a corros\u00e3o por pites e por frestas pode ocorrer em solu\u00e7\u00f5es de cloreto. Tamb\u00e9m explica por que o cromo, o molibd\u00eanio e o nitrog\u00eanio podem melhorar a resist\u00eancia em ambientes mais agressivos.<\/p>\n\n\n\n\n<style>\n    \/* \u5bfc\u5165 Poppins \u5b57\u4f53 *\/\n    @import url('https:\/\/fonts.googleapis.com\/css2?family=Poppins:wght@400;600&display=swap');\n\n    \/* \u6837\u5f0f\u9694\u79bb\uff1a\u6240\u6709\u6837\u5f0f\u90fd\u4ee5 .cldg-card- \u5f00\u5934\uff0c\u907f\u514d\u5f71\u54cd\u7f51\u7ad9\u5176\u4ed6\u90e8\u5206 *\/\n    .cldg-card-container {\n        display: flex;\n        flex-wrap: wrap; \n        width: 100%;\n        margin: 20px 0;\n        border: 1px solid #e0e0e0;\n        border-radius: 8px;\n        overflow: hidden; \n        background-color: #ffffff;\n        font-family: 'Poppins', Arial, sans-serif; \n        box-sizing: border-box;\n    }\n\n    .cldg-card-text-column {\n        flex: 55%; \n        padding: 30px;\n        display: flex;\n        flex-direction: column;\n        justify-content: center;\n        box-sizing: border-box;\n    }\n\n    .cldg-card-image-column {\n        flex: 45%; \n        min-height: 250px; \n        box-sizing: border-box;\n    }\n\n    .cldg-card-image-column a {\n        display: block;\n        width: 100%;\n        height: 100%;\n    }\n\n    .cldg-card-image-column img {\n        width: 100%;\n        height: 100%;\n        object-fit: cover; \n        display: block;\n        transition: transform 0.3s ease;\n    }\n\n    .cldg-card-image-column a:hover img {\n        transform: scale(1.03);\n    }\n\n    \/* SEO\u4f18\u5316\uff1a\u4f7f\u7528<p>\u6807\u7b7e\u4ee3\u66ffH3\uff0c\u907f\u514d\u6270\u4e71\u9875\u9762\u6807\u9898\u5c42\u7ea7 *\/\n    .cldg-card-title {\n        font-size: 24px;\n        font-weight: 600;\n        color: #111111;\n        margin-top: 0;\n        margin-bottom: 15px;\n        line-height: 1.3;\n        text-transform: capitalize;\n    }\n\n    .cldg-card-description {\n        font-size: 16px;\n        color: #444444;\n        line-height: 1.6;\n        margin-bottom: 20px;\n    }\n\n    .cldg-card-cta-button {\n        display: inline-block;\n        width: fit-content;\n        padding: 10px 26px; \n        font-size: 16px;\n        font-weight: 600;\n        color: #d70c19; \n        background-color: #ffffff; \n        border: 2px solid #d70c19; \n        border-radius: 5px;\n        text-decoration: none !important;\n        text-align: center;\n        transition: background-color 0.3s ease, color 0.3s ease;\n    }\n\n    .cldg-card-cta-button:hover {\n        background-color: #d70c19; \n        color: #ffffff !important; \n    }\n\n    \/* \u54cd\u5e94\u5f0f\u8bbe\u8ba1 *\/\n    @media (max-width: 768px) {\n        .cldg-card-container {\n            flex-direction: column-reverse; \/* \u79fb\u52a8\u7aef\u8ba9\u56fe\u7247\u5728\u4e0a\u65b9\u663e\u793a\u6548\u679c\u66f4\u597d *\/\n        }\n\n        .cldg-card-text-column,\n        .cldg-card-image-column {\n            flex: 100%; \n        }\n        .cldg-card-text-column {\n            padding: 25px; \n            text-align: center;\n        }\n        .cldg-card-cta-button {\n            width: 100%;\n            box-sizing: border-box;\n        }\n    }\n<\/style>\n\n<div class=\"cldg-card-container\">\n    <div class=\"cldg-card-text-column\">\n        <p class=\"cldg-card-title\">V\u00e1lvula de gaveta em cunha<\/p>\n        <p class=\"cldg-card-description\">\n            <strong>Padr\u00e3o de projeto e fabrica\u00e7\u00e3o:<\/strong> API 600<br>\n            <strong>Frente a frente:<\/strong> Norma ASME B16.10\n        <\/p>\n        <a href=\"https:\/\/www.pansvalve.com\/pt\/products\/wedge-gate-valve\/\" class=\"cldg-card-cta-button\" target=\"_blank\" rel=\"noopener noreferrer\">\n            Ver especifica\u00e7\u00f5es\n        <\/a>\n    <\/div>\n    <div class=\"cldg-card-image-column\">\n        <a href=\"https:\/\/www.pansvalve.com\/pt\/products\/wedge-gate-valve\/\" target=\"_blank\" rel=\"noopener noreferrer\">\n            <img decoding=\"async\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2022\/04\/1.jpg\" alt=\"V\u00e1lvula de gaveta tipo cunha API 600 para atacado\">\n        <\/a>\n    <\/div>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Grade_Selection_Questions_Buyers_Ask\"><\/span>Perguntas frequentes dos compradores sobre a sele\u00e7\u00e3o de grau<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. O CF8 \u00e9 o mesmo que o a\u00e7o inoxid\u00e1vel 304?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O CF8 \u00e9 frequentemente considerado o equivalente fundido do a\u00e7o inoxid\u00e1vel 304. No entanto, a classifica\u00e7\u00e3o ASTM para fundi\u00e7\u00e3o e as especifica\u00e7\u00f5es do projeto devem orientar a escolha final do material.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. O CF8M \u00e9 melhor que o CF8?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O CF8M apresenta melhor desempenho em diversas condi\u00e7\u00f5es de cloreto e produtos qu\u00edmicos, pois cont\u00e9m molibd\u00eanio. O CF8 ainda pode ser suficiente para aplica\u00e7\u00f5es leves em \u00e1gua, ar ou servi\u00e7os p\u00fablicos internos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Quando se deve especificar o a\u00e7o inoxid\u00e1vel 316L?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Especifique o a\u00e7o inoxid\u00e1vel 316L quando o projeto exigir a\u00e7o inoxid\u00e1vel de baixo carbono, especialmente para pe\u00e7as soldadas ou fabricadas. Para corpos de v\u00e1lvulas fundidos, confirme se o CF8M \u00e9 aceit\u00e1vel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Match_The_Grade_To_The_Corrosion_Risk\"><\/span>Combine a classifica\u00e7\u00e3o com o risco de corros\u00e3o.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Um SS <a href=\"https:\/\/www.pansvalve.com\/pt\/ball-valve-collection\/\" type=\"link\" id=\"https:\/\/www.pansvalve.com\/blog\/gate-valve\/gate-valve-working-principle\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvula de gaveta<\/a> A escolha do a\u00e7o inoxid\u00e1vel deve ser feita considerando primeiro as condi\u00e7\u00f5es de servi\u00e7o, e n\u00e3o apenas uma etiqueta gen\u00e9rica. O CF8 pode ser usado em tubula\u00e7\u00f5es de baixo carbono. O CF8M costuma ser mais adequado para \u00e1reas com exposi\u00e7\u00e3o a cloretos, ar costeiro e lavagem frequente. O a\u00e7o 316L \u00e9 importante quando h\u00e1 requisitos de baixo carbono ou soldagem na especifica\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A PANS pode ajudar os compradores a separar esses casos em um \u00fanico pedido. Um projeto pode incluir tubula\u00e7\u00f5es de servi\u00e7os p\u00fablicos limpas, servi\u00e7os qu\u00edmicos e exposi\u00e7\u00e3o \u00e0 corros\u00e3o externa simultaneamente. Essas tubula\u00e7\u00f5es nem sempre precisam do mesmo tipo de a\u00e7o inoxid\u00e1vel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Envie com anteced\u00eancia as informa\u00e7\u00f5es sobre o fluido, temperatura, press\u00e3o, risco de cloreto, norma do flange e os documentos necess\u00e1rios. Com esses detalhes, a PANS pode ajudar a selecionar a classe de a\u00e7o inoxid\u00e1vel da v\u00e1lvula de gaveta, o projeto de veda\u00e7\u00e3o e o plano de testes adequados antes do in\u00edcio da produ\u00e7\u00e3o.<\/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>An SS gate valve is not chosen just because the pipeline \u201cneeds stainless.\u201d The grade still has to match the fluid, cleaning method, chloride level, temperature, and site environment. CF8 can work well in mild service, while CF8M and 316L are usually considered when corrosion risk, washdown exposure, or welding requirements become more important. For [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4376,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[188],"tags":[],"class_list":["post-4375","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate-valve"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SS Gate Valve Material Grades: CF8, CF8M &amp; 316L Specs<\/title>\n<meta name=\"description\" content=\"Specify ss gate valve material grades including CF8, CF8M, and 316L. 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