{"id":4422,"date":"2026-08-03T16:41:46","date_gmt":"2026-08-03T08:41:46","guid":{"rendered":"https:\/\/www.pansvalve.com\/?p=4422"},"modified":"2026-08-27T21:25:11","modified_gmt":"2026-08-27T13:25:11","slug":"api-598-valve-testing-guide","status":"publish","type":"post","link":"https:\/\/www.pansvalve.com\/pt\/knowledge-center\/api-598-valve-testing-guide\/","title":{"rendered":"Norma API 598 para Teste de V\u00e1lvulas: Guia Completo de Inspe\u00e7\u00e3o e Teste"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 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\/knowledge-center\/api-598-valve-testing-guide\/#Quick_Answer_API_598_Testing\" >Resposta r\u00e1pida: Teste da API 598<\/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\/knowledge-center\/api-598-valve-testing-guide\/#What_is_the_API_598_Standard\" >O que \u00e9 o padr\u00e3o API 598?&nbsp;<\/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\/knowledge-center\/api-598-valve-testing-guide\/#Mandatory_API_598_Valve_Inspection_and_Testing_Types\" >Tipos obrigat\u00f3rios de inspe\u00e7\u00e3o e teste de v\u00e1lvulas segundo a norma API 598<\/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\/knowledge-center\/api-598-valve-testing-guide\/#The_API_598_Testing_Procedure_Step-by-Step\" >Procedimento de teste da API 598 passo a passo<\/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\/knowledge-center\/api-598-valve-testing-guide\/#Which_Standard_Applies_API_598_vs_API_6D\" >Qual norma se aplica? API 598 ou API 6D?<\/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\/knowledge-center\/api-598-valve-testing-guide\/#API_598_Acceptance_Criteria_for_Allowable_Leakage\" >Crit\u00e9rios de aceita\u00e7\u00e3o da API 598 para vazamentos permitidos<\/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\/knowledge-center\/api-598-valve-testing-guide\/#Common_API_598_Valve_Inspection_and_Testing_Pitfalls\" >Armadilhas comuns na inspe\u00e7\u00e3o e teste de v\u00e1lvulas segundo a norma API 598<\/a><\/li><\/ul><\/nav><\/div>\n\n<div style=\"border:1px solid #ccc; border-radius:4px; box-sizing:border-box; padding:0 !important;\">\n\n  <div style=\"padding:15px !important; box-sizing:border-box;\">\n\n    <h2 style=\"margin:0 0 10px 0 !important; padding:0 !important; width:100% !important; box-sizing:border-box;\"><span class=\"ez-toc-section\" id=\"Quick_Answer_API_598_Testing\"><\/span>\n      Resposta r\u00e1pida: Teste da API 598\n    <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n    <p style=\"margin:0 !important; padding:0 !important; width:100% !important; box-sizing:border-box;\">\n      A norma API 598 estabelece os padr\u00f5es globais essenciais para testes de press\u00e3o, estanqueidade da sede e integridade do corpo em v\u00e1lvulas industriais. Ela fornece procedimentos cr\u00edticos para avaliar o desempenho da v\u00e1lvula, incluindo testes de corpo, veda\u00e7\u00e3o e sede traseira, antes que as unidades entrem em servi\u00e7o. <a href=\"https:\/\/www.pansvalve.com\/pt\">V\u00e1lvula PANS<\/a> A PANS Valve integra os rigorosos protocolos da API 598 em todos os processos de fabrica\u00e7\u00e3o, garantindo que cada v\u00e1lvula industrial ofere\u00e7a confiabilidade e seguran\u00e7a superiores. Com uma base de produ\u00e7\u00e3o de 25.000 m\u00b2 e mais de 40 anos de experi\u00eancia em engenharia, a PANS Valve garante solu\u00e7\u00f5es de alto desempenho e totalmente em conformidade com as normas para os seus projetos mais exigentes.\n    <\/p>\n\n  <\/div>\n\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_API_598_Standard\"><\/span><strong>O que \u00e9 o padr\u00e3o API 598?&nbsp;<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O Instituto Americano de Petr\u00f3leo estabeleceu <strong>API 598<\/strong> como refer\u00eancia global para inspe\u00e7\u00e3o e teste de v\u00e1lvulas. Abrange os requisitos de teste de press\u00e3o para uma ampla gama de v\u00e1lvulas industriais, incluindo <a href=\"https:\/\/www.pansvalve.com\/pt\/product\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvulas borboleta, de reten\u00e7\u00e3o, de esfera, globo, macho e gaveta<\/a> com diferentes materiais para os assentos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Em vez de um padr\u00e3o de projeto, ele estabelece crit\u00e9rios e procedimentos para avaliar a integridade da carca\u00e7a, a veda\u00e7\u00e3o da sede, as taxas de vazamento e os tempos de espera antes que as unidades sejam enviadas. \u00c9 comumente usado em conjunto com as normas API 600, API 602 e API 6D.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mandatory_API_598_Valve_Inspection_and_Testing_Types\"><\/span><strong>Tipos obrigat\u00f3rios de inspe\u00e7\u00e3o e teste de v\u00e1lvulas segundo a norma API 598<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>API 598<\/strong> A verifica\u00e7\u00e3o abrange dois aspectos importantes do desempenho da v\u00e1lvula: veda\u00e7\u00e3o estanque e integridade da barreira de press\u00e3o. Dependendo do projeto, os fabricantes podem ter que realizar os seguintes testes antes que um produto possa entrar em servi\u00e7o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Teste API 598 para resist\u00eancia da carca\u00e7a<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tamb\u00e9m conhecido como teste de integridade estrutural, ele valida a integridade de componentes pressurizados. Durante esse procedimento hidrost\u00e1tico, uma v\u00e1lvula parcialmente aberta \u00e9 montada em uma bancada e, em seguida, aplica-se press\u00e3o \u00e0s paredes, \u00e0 tampa e \u00e0s juntas para identificar vazamentos. O valor aceit\u00e1vel \u00e9... <strong>press\u00e3o de teste API 598<\/strong> Para v\u00e1lvulas de a\u00e7o, a press\u00e3o deve ser pelo menos 1,5 vezes a press\u00e3o nominal de trabalho a frio (CWP).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Teste de fechamento API 598 para estanqueidade da sede<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tamb\u00e9m chamado de <strong>Teste de assento API 598<\/strong>, O teste de alta press\u00e3o confirma a capacidade de veda\u00e7\u00e3o do mecanismo interno quando totalmente fechado. \u00c9 obrigat\u00f3rio para diversos tipos de v\u00e1lvulas sob condi\u00e7\u00f5es de carga elevada. Este teste \u00e9 realizado a 1,1 vezes a press\u00e3o de trabalho cont\u00ednua (CWP) permitida. Para v\u00e1lvulas DN 100 ou NPS 4 e menores, \u00e9 necess\u00e1rio um teste de baixa press\u00e3o. Este teste utiliza g\u00e1s e ar a 80 \u00b1 20 psig para detectar microvazamentos que o teste de alta press\u00e3o poderia n\u00e3o detectar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Teste de assento traseiro API 598 para veda\u00e7\u00f5es de haste<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Quando uma v\u00e1lvula possui um recurso de veda\u00e7\u00e3o traseira, isso verifica a veda\u00e7\u00e3o entre o eixo ou haste e a tampa quando a v\u00e1lvula est\u00e1 totalmente aberta. Assim como no teste de fechamento, a press\u00e3o necess\u00e1ria \u00e9 1,1 vezes a press\u00e3o de trabalho cont\u00ednua (CWP) m\u00e1xima permitida. Observe que este teste n\u00e3o se aplica a projetos que possuem <a href=\"https:\/\/www.pansvalve.com\/pt\/product\/din-bellow-sealed-globe-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">veda\u00e7\u00f5es de fole<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Meios de teste padr\u00e3o: L\u00edquido ou g\u00e1s<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">De acordo com <strong>normas de teste de v\u00e1lvulas<\/strong>, Os testes de alta press\u00e3o geralmente utilizam l\u00edquidos como querosene e \u00e1gua limpa com inibidores de corros\u00e3o. J\u00e1 os testes de baixa press\u00e3o utilizam ar, nitrog\u00eanio e g\u00e1s inerte para verificar vazamentos m\u00ednimos. O vazamento \u00e9 detectado com um dispositivo volum\u00e9trico ou quando bolhas s\u00e3o observadas ao imergir a v\u00e1lvula em \u00e1gua.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_API_598_Testing_Procedure_Step-by-Step\"><\/span><strong>Procedimento de teste da API 598 passo a passo<\/strong><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=\"800\" height=\"450\" data-src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/436436.webp\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"Esta imagem oferece uma vis\u00e3o geral do procedimento de teste passo a passo da API 598, embora na realidade possa ser diferente.\" class=\"wp-image-4425 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/436436.webp\" alt=\"Esta imagem oferece uma vis\u00e3o geral do procedimento de teste passo a passo da API 598, embora na realidade possa ser diferente.\" class=\"wp-image-4425\" srcset=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/436436.webp 800w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/436436-300x169.webp 300w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/436436-768x432.webp 768w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/436436-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Para garantir resultados confi\u00e1veis, \u00e9 fundamental seguir a sequ\u00eancia definida ao realizar o procedimento. <strong>Inspe\u00e7\u00e3o e teste de v\u00e1lvulas API 598<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Etapa 1: Preparando a v\u00e1lvula para o teste<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Antes de iniciar os testes, certifique-se de que a v\u00e1lvula esteja limpa e livre de qualquer selante, tinta, graxa, \u00f3leo ou outros materiais. A \u00fanica exce\u00e7\u00e3o \u00e9 <a href=\"https:\/\/www.pansvalve.com\/pt\/blog\/plug-valve\/lubricated-vs-non-lubricated-plug-valves\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvulas de encaixe lubrificadas<\/a> que dependem de selantes injet\u00e1veis para funcionar corretamente. Ao usar l\u00edquidos, remova qualquer ar preso na cavidade para obter leituras precisas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Etapa 2: Executando o teste API 598 Shell<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Este procedimento serve como a primeira rodada de valida\u00e7\u00e3o de press\u00e3o. A press\u00e3o hidrost\u00e1tica \u00e9 elevada para 1,5 vezes a press\u00e3o de trabalho cont\u00ednua (CWP) nominal e ent\u00e3o aplicada ao corpo da v\u00e1lvula. Para v\u00e1lvulas com NPS 2 ou menor, o teste \u00e9 mantido por pelo menos 15 segundos. Esse tempo passa a ser de 60 segundos para v\u00e1lvulas com NPS de 2,5 a 6 e de at\u00e9 600 segundos para unidades com NPS superior a 24.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Etapa 3: Executando o teste de fechamento da API 598<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Para os equipamentos com recurso de assento traseiro, as v\u00e1lvulas s\u00e3o totalmente abertas e a gaxeta \u00e9 afrouxada. Caso contr\u00e1rio, a v\u00e1lvula \u00e9 totalmente fechada e aplica-se 1,1 vezes a press\u00e3o CWP na entrada. Os tempos de reten\u00e7\u00e3o s\u00e3o relativamente os mesmos do teste de casco, mas chegam a 240 segundos para unidades maiores.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Etapa 4: Verifica\u00e7\u00e3o dos Crit\u00e9rios de Aceita\u00e7\u00e3o da API 598<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ap\u00f3s os testes, todas as pe\u00e7as fundidas s\u00e3o inspecionadas visualmente para verificar a presen\u00e7a de vazamentos ou defeitos superficiais, de acordo com os par\u00e2metros da norma MSS SP-55. As v\u00e1lvulas com sede resiliente devem apresentar vazamento zero durante os testes, enquanto as v\u00e1lvulas com sede met\u00e1lica possuem limites admiss\u00edveis com base no tamanho e no fluido de teste. Detalhes adicionais sobre esses crit\u00e9rios espec\u00edficos s\u00e3o fornecidos em uma se\u00e7\u00e3o separada deste artigo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Which_Standard_Applies_API_598_vs_API_6D\"><\/span><strong>Qual norma se aplica? API 598 ou API 6D?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"450\" data-src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/63463.webp\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"Esta imagem mostra fabricantes e compradores analisando as diferen\u00e7as entre os padr\u00f5es API 598 e API 6D.\" class=\"wp-image-4426 lazyload\"\/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/63463.webp\" alt=\"Esta imagem mostra fabricantes e compradores analisando as diferen\u00e7as entre os padr\u00f5es API 598 e API 6D.\" class=\"wp-image-4426\" srcset=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/63463.webp 800w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/63463-768x432.webp 768w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/63463-300x169.webp 300w, https:\/\/www.pansvalve.com\/wp-content\/uploads\/2026\/08\/63463-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ambas as normas do Instituto Americano de Petr\u00f3leo s\u00e3o valiosas, mas n\u00e3o s\u00e3o intercambi\u00e1veis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Principais diferen\u00e7as entre API 598 e API 6D<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>API 598<\/strong> A norma API 6D \u00e9 universal para todas as v\u00e1lvulas industriais que suportam press\u00e3o, independentemente de onde sejam utilizadas. Em contrapartida, a norma API 6D \u00e9 espec\u00edfica para v\u00e1lvulas de dutos em sistemas de transmiss\u00e3o de petr\u00f3leo e g\u00e1s natural em larga escala.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>Testes adicionais<\/em><\/strong>A norma API 6D tamb\u00e9m abrange testes de seguran\u00e7a de dutos, como Double Block and Bleed (DBB) e Double Isolation and Bleed (DIB).<\/li>\n\n\n\n<li><strong><em>Dura\u00e7\u00e3o dos testes<\/em><\/strong>A API 6D exige tempos de espera mais longos. Por exemplo, uma espera de 2 minutos \u00e9 necess\u00e1ria na API 6D, enquanto no protocolo geral s\u00e3o necess\u00e1rios apenas 15 segundos.<\/li>\n\n\n\n<li><strong><em>Torque e operabilidade<\/em><\/strong>A norma API 6D enfatiza o desempenho operacional, por isso inclui medi\u00e7\u00f5es de torque e documentos de rastreabilidade, como relat\u00f3rios de testes de materiais.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Mais informa\u00e7\u00f5es sobre as diferen\u00e7as entre API 598 e API 6D podem ser encontradas em \u201c<a href=\"https:\/\/www.pansvalve.com\/pt\/blog\/api-598-vs-api-6d-valves\/\" target=\"_blank\" rel=\"noreferrer noopener\">API 598 vs API 6D: Qual padr\u00e3o de v\u00e1lvula \u00e9 o certo para o seu setor?<\/a>\u201d, especificamente sobre rigor e aplica\u00e7\u00f5es industriais.<\/p>\n\n\n\n<style>\n    \/* \u5bfc\u5165 Poppins \u5b57\u4f53 *\/\n    @import url('https:\/\/fonts.googleapis.com\/css2?family=Poppins:wght@400;600;700&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; \/* \u5728\u79fb\u52a8\u7aef\u6362\u884c *\/\n        width: 100%;\n        margin: 20px 0;\n        border: 1px solid #e0e0e0;\n        border-radius: 8px;\n        overflow: hidden; \/* \u786e\u4fdd\u5b50\u5143\u7d20\u7684\u5706\u89d2\u751f\u6548 *\/\n        background-color: #ffffff;\n        font-family: 'Poppins', Arial, sans-serif; \/* \u4f7f\u7528\u60a8\u6307\u5b9a\u7684 Poppins \u5b57\u4f53 *\/\n        box-sizing: border-box;\n    }\n\n    .cldg-card-text-column {\n        flex: 55%; \/* \u5de6\u4fa7\u6587\u672c\u680f\u5360\u6bd4 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%; \/* \u53f3\u4fa7\u56fe\u7247\u680f\u5360\u6bd4 45% *\/\n        min-height: 250px; \/* \u907f\u514d\u5728flex\u5e03\u5c40\u4e2d\u88ab\u8fc7\u5ea6\u538b\u7f29 *\/\n        box-sizing: border-box;\n    }\n\n    .cldg-card-image-column img {\n        width: 100%;\n        height: 100%;\n        object-fit: cover; \/* \u56fe\u7247\u586b\u5145\u5bb9\u5668\u4e14\u4e0d\u53d8\u5f62 *\/\n        display: block;\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: 700; \/* \u52a0\u7c97\u4ee5\u7a81\u51fa *\/\n        color: #111111;\n        margin-top: 0;\n        margin-bottom: 15px;\n        line-height: 1.3;\n    }\n\n    .cldg-card-description {\n        font-size: 16px;\n        color: #444444;\n        line-height: 1.6;\n        margin-bottom: 25px; \/* \u589e\u52a0\u4e0e\u6309\u94ae\u7684\u95f4\u8ddd *\/\n    }\n\n    \/* \u5168\u65b0\u6309\u94ae\u6837\u5f0f *\/\n    .cldg-card-cta-button {\n        display: inline-block;\n        max-width: 220px; \/* \u9650\u5236\u6700\u5927\u5bbd\u5ea6 *\/\n        box-sizing: border-box;\n        padding: 10px 26px; \/* \u5185\u8fb9\u8ddd *\/\n        font-size: 16px;\n        font-weight: 600;\n        color: #d70c19; \/* \u6587\u672c\u989c\u8272\uff1a\u7ea2\u8272 *\/\n        background-color: #ffffff; \/* \u80cc\u666f\u989c\u8272\uff1a\u767d\u8272 *\/\n        border: 2px solid #d70c19; \/* \u8fb9\u6846\uff1a2\u50cf\u7d20\u7ea2\u8272\u5b9e\u7ebf *\/\n        border-radius: 5px;\n        text-decoration: none;\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; \/* \u60ac\u505c\u65f6\u80cc\u666f\uff1a\u7ea2\u8272 *\/\n        color: #ffffff; \/* \u60ac\u505c\u65f6\u6587\u672c\uff1a\u767d\u8272 *\/\n    }\n\n    \/* \u54cd\u5e94\u5f0f\u8bbe\u8ba1\uff1a\u5728\u5bbd\u5ea6\u5c0f\u4e8e768px\u7684\u8bbe\u5907\u4e0a *\/\n    @media (max-width: 768px) {\n        .cldg-card-container {\n            flex-direction: column; \/* \u5782\u76f4\u5806\u53e0 *\/\n        }\n        .cldg-card-text-column,\n        .cldg-card-image-column {\n            flex: 100%; \/* \u6bcf\u680f\u90fd\u5360\u636e\u5168\u90e8\u5bbd\u5ea6 *\/\n        }\n        .cldg-card-text-column {\n            padding: 25px; \/* \u8c03\u6574\u5185\u8fb9\u8ddd *\/\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 borboleta de veda\u00e7\u00e3o r\u00edgida de metal tri-exc\u00eantrico<\/p>\n        <p class=\"cldg-card-description\">\n            1. Design tri-exc\u00eantrico: veda\u00e7\u00e3o sem atrito, prolongando a vida \u00fatil.<br>\n            2. Sistema de veda\u00e7\u00e3o radial din\u00e2mica balanceada: reduz o torque operacional e garante veda\u00e7\u00e3o bidirecional.<br>\n            3. Anel de veda\u00e7\u00e3o de material composto: ecol\u00f3gico, resistente ao desgaste e com alto padr\u00e3o de vazamento.\n        <\/p>\n        <a href=\"https:\/\/www.pansvalve.com\/pt\/products\/three-eccentric-metal-hard-seal-butterfly-valve\/\" class=\"cldg-card-cta-button\">Ver mais detalhes<\/a>\n    <\/div>\n\n    <div class=\"cldg-card-image-column\">\n        <img decoding=\"async\" class=\"lazyload\" data-src=\"https:\/\/www.pansvalve.com\/wp-content\/uploads\/2024\/09\/1-Three-Eccentric-Metal-Hard-Seal-Butterfly-Valve_butt-weld-type.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"V\u00e1lvula borboleta de veda\u00e7\u00e3o r\u00edgida de metal tri-exc\u00eantrico\"><noscript><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\" alt=\"V\u00e1lvula borboleta de veda\u00e7\u00e3o r\u00edgida de metal tri-exc\u00eantrico\"><\/noscript>\n    <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"API_598_Acceptance_Criteria_for_Allowable_Leakage\"><\/span><strong>Crit\u00e9rios de aceita\u00e7\u00e3o da API 598 para vazamentos permitidos<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Embora n\u00e3o seja permitido nenhum vazamento vis\u00edvel em v\u00e1lvulas com sede resiliente, essas s\u00e3o as taxas m\u00ednimas de vazamento medidas em gotas por minuto para testes com l\u00edquidos e bolhas por minuto para testes com gases.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong><em>Tamanho (NPS) em polegadas<\/em><\/strong><\/td><td><strong><em>Gotas por minuto<\/em><\/strong><\/td><td><strong><em>Bolhas por minuto<\/em><\/strong><\/td><\/tr><tr><td>\u2264 2<\/td><td>0<\/td><td>0<\/td><\/tr><tr><td>2 \u00bd&nbsp;<\/td><td>5<\/td><td>10<\/td><\/tr><tr><td>3<\/td><td>6<\/td><td>12<\/td><\/tr><tr><td>4<\/td><td>8<\/td><td>16<\/td><\/tr><tr><td>6<\/td><td>12<\/td><td>24<\/td><\/tr><tr><td>8<\/td><td>16<\/td><td>32<\/td><\/tr><tr><td>10<\/td><td>20<\/td><td>40<\/td><\/tr><tr><td>12<\/td><td>24<\/td><td>48<\/td><\/tr><tr><td>\u2265 14<\/td><td>2 x NPS<\/td><td>4 x NPS<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_API_598_Valve_Inspection_and_Testing_Pitfalls\"><\/span><strong>Armadilhas comuns na inspe\u00e7\u00e3o e teste de v\u00e1lvulas segundo a norma API 598<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Apesar de seguir a sequ\u00eancia definida, alguns erros comuns podem comprometer a precis\u00e3o dos resultados. Por exemplo, for\u00e7a excessiva ou alavancagem adicional podem ser aplicadas para fechar uma v\u00e1lvula durante o teste de veda\u00e7\u00e3o. Isso danifica a v\u00e1lvula ou cria uma veda\u00e7\u00e3o tempor\u00e1ria, n\u00e3o refletindo, portanto, o desempenho operacional real.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Outro erro grave \u00e9 negligenciar a verifica\u00e7\u00e3o da pureza do fluido, seja ele l\u00edquido ou gasoso. Por exemplo, ao testar v\u00e1lvulas de a\u00e7o inoxid\u00e1vel austen\u00edtico, o teor de cloreto na \u00e1gua pode n\u00e3o ter sido verificado. Al\u00e9m disso, tintas ou revestimentos protetores podem ter sido aplicados antes da conclus\u00e3o do teste de integridade da carca\u00e7a, o que mascara problemas de porosidade ou vazamentos nas juntas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>V\u00e1lvula PANS para v\u00e1lvulas industriais em conformidade com a norma API<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A Zhejiang Zhedong Valve Corp., Ltd elimina riscos e garante o sucesso do projeto ao aderir a padr\u00f5es globais como <strong>API 598<\/strong> Na fabrica\u00e7\u00e3o de v\u00e1lvulas de globo, gaveta e outros tipos de v\u00e1lvulas de alto desempenho, a PANS Valve, fundada em 1985, possui uma base de produ\u00e7\u00e3o de 25.000 m\u00b2 em Wenzhou, China, e mais de tr\u00eas d\u00e9cadas de experi\u00eancia e conhecimento em solu\u00e7\u00f5es de v\u00e1lvulas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Entre em contato com a PANS Valve hoje mesmo para garantir que todos os componentes e produtos de v\u00e1lvulas utilizados em seu sistema industrial sejam testados e estejam em conformidade com as normas API.<\/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>Quick Answer: API 598 Testing API 598 establishes the essential global standards for pressure-testing, seat tightness, and body integrity in industrial valves. It provides critical procedures for evaluating valve performance, including shell, closure, and backseat tests, before units enter service. PANS Valve integrates these rigorous API 598 protocols into all manufacturing, ensuring every industrial valve [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4424,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>API 598 Valve Testing Standard Inspection &amp; Testing Guide<\/title>\n<meta name=\"description\" content=\"Learn how the API 598 valve inspection and testing standard works when ordering industrial valves from PANS Valve.\" \/>\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\/knowledge-center\/api-598-valve-testing-guide\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"API 598 Valve Testing Standard Inspection &amp; 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