{"id":6321,"date":"2026-02-24T04:57:47","date_gmt":"2026-02-23T20:57:47","guid":{"rendered":"https:\/\/www.onerovalve.com\/?p=6321"},"modified":"2026-03-02T04:58:24","modified_gmt":"2026-03-01T20:58:24","slug":"2-piece-vs-3-piece-trunnion-ball-valve","status":"publish","type":"post","link":"https:\/\/www.onerovalve.com\/pt\/blog\/2-piece-vs-3-piece-trunnion-ball-valve\/","title":{"rendered":"V\u00e1lvula de esfera com munh\u00e3o de 2 pe\u00e7as versus v\u00e1lvula de esfera com munh\u00e3o de 3 pe\u00e7as: um guia de sele\u00e7\u00e3o"},"content":{"rendered":"<p class=\"wp-block-paragraph\">As v\u00e1lvulas de esfera com montagem em munh\u00e3o utilizam um design de esfera fixa para lidar com alta press\u00e3o em tubula\u00e7\u00f5es de grande di\u00e2metro. A estrutura do corpo determina como a v\u00e1lvula \u00e9 montada e mantida. As configura\u00e7\u00f5es de corpo de duas e tr\u00eas pe\u00e7as s\u00e3o as mais comuns em projetos industriais.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Neste guia, exploraremos as diferen\u00e7as entre o modelo de duas pe\u00e7as. <a href=\"https:\/\/www.onerovalve.com\/pt\/product\/trunnion-ball-valve\/\">v\u00e1lvula de esfera munh\u00e3o<\/a> Compara\u00e7\u00e3o entre v\u00e1lvula de esfera com munh\u00e3o de 3 pe\u00e7as e v\u00e1lvula de esfera com munh\u00e3o de 3 pe\u00e7as. Destacaremos suas vantagens e desvantagens, pr\u00e1ticas de manuten\u00e7\u00e3o e crit\u00e9rios de sele\u00e7\u00e3o para projetos de oleodutos e gasodutos.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"646\" src=\"https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585.webp\" alt=\"\" class=\"wp-image-6325\" srcset=\"https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585.webp 1200w, https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585-500x269.webp 500w, https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585-300x162.webp 300w, https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585-768x413.webp 768w, https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585-18x10.webp 18w, https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585-139x75.webp 139w, https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585-480x258.webp 480w, https:\/\/www.onerovalve.com\/wp-content\/uploads\/2026\/03\/image-1772398397065-585-800x431.webp 800w\" sizes=\"auto, (max-width:767px) 480px, (max-width:1200px) 100vw, 1200px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>V\u00e1lvula de esfera com munh\u00e3o de 2 pe\u00e7as<\/strong><strong>s: Pr\u00f3s e contras<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uma v\u00e1lvula de esfera de duas pe\u00e7as possui duas se\u00e7\u00f5es de corpo unidas por roscas ou flanges e \u00e9 amplamente utilizada para controlar o fluxo de l\u00edquidos e gases. Uma se\u00e7\u00e3o forma o corpo e a conex\u00e3o final, enquanto a outra cont\u00e9m os componentes internos e a sa\u00edda, permitindo o fechamento bidirecional ou a opera\u00e7\u00e3o com passagem plena.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pr\u00f3s&nbsp;<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><a href=\"https:\/\/www.onerovalve.com\/pt\/product\/trunnion-ball-valve\/\"><img decoding=\"async\" src=\"https:\/\/www.onerovalve.com\/wp-content\/uploads\/2024\/08\/Web-1920-%E2%80%93-9.jpg\" alt=\"\" style=\"width:307px;height:auto\"\/><\/a><figcaption class=\"wp-element-caption\">                     <a href=\"https:\/\/www.onerovalve.com\/pt\/product\/trunnion-ball-valve\/\"><strong>V\u00e1lvula de esfera munh\u00e3o<\/strong><\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Instala\u00e7\u00e3o f\u00e1cil: S\u00e3o leves e t\u00eam um di\u00e2metro pequeno, o que facilita a instala\u00e7\u00e3o. O tamanho reduzido do atuador tamb\u00e9m facilita o movimento sem atrito.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Resist\u00eancia m\u00ednima a fluidos: Seu coeficiente de resist\u00eancia \u00e9 semelhante ao de um tubo de igual comprimento, permitindo que os fluidos fluam sem interrup\u00e7\u00f5es.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Boa veda\u00e7\u00e3o: Essas v\u00e1lvulas fecham hermeticamente e possuem uma veda\u00e7\u00e3o forte, reduzindo as possibilidades de vazamento. Materiais como metal, EPDM, EPR e PTFE s\u00e3o comumente usados na superf\u00edcie de veda\u00e7\u00e3o.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Praticidade operacional: Podem ser facilmente abertas e fechadas conforme desejado, bastando gir\u00e1-las at\u00e9 um \u00e2ngulo reto completo. Al\u00e9m disso, podem ser operadas remotamente, se necess\u00e1rio.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Manuten\u00e7\u00e3o f\u00e1cil: A estrutura da v\u00e1lvula \u00e9 simples, facilitando a manuten\u00e7\u00e3o. Quando totalmente aberta ou fechada, a superf\u00edcie de veda\u00e7\u00e3o da sede fica isolada do fluido, o que ajuda a minimizar o risco de eros\u00e3o do selante.\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Contras<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u00e3o \u00e9 o ideal para limitar a velocidade de processamento.<\/li>\n\n\n\n<li>Desgaste em fluidos sujos.\u00a0<\/li>\n\n\n\n<li>Limita\u00e7\u00f5es de tamanho em sistemas de alta press\u00e3o.\u00a0<\/li>\n\n\n\n<li>Custos iniciais mais elevados.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>V\u00e1lvula de esfera com munh\u00e3o de 3 pe\u00e7as<\/strong><strong>s: Pr\u00f3s e contras<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uma v\u00e1lvula de esfera de tr\u00eas pe\u00e7as \u00e9 composta por tr\u00eas partes, especificamente, um par de extremidades de conex\u00e3o e o corpo principal. A tampa da extremidade pode ser conectada \u00e0 tubula\u00e7\u00e3o por meio de uma montagem flangeada, fixada por grampo, soldada ou roscada. Os engenheiros costumam escolher esta vers\u00e3o para tubula\u00e7\u00f5es de grande di\u00e2metro. <a href=\"https:\/\/www.onerovalve.com\/pt\/blog\/flanged-ball-valve-vs-wafer-ball-valve-which-to-choose\/\">v\u00e1lvulas de esfera flangeadas <\/a>Em ambientes de trabalho pesado.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pr\u00f3s<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Design de som: Gra\u00e7as ao seu design simples, leve e de tr\u00eas pe\u00e7as, essas v\u00e1lvulas podem ser facilmente montadas e desmontadas.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Baixa resist\u00eancia ao fluido: O coeficiente de resist\u00eancia das v\u00e1lvulas de esfera de tr\u00eas pe\u00e7as \u00e9 igual ao di\u00e2metro do tubo de mesmo comprimento. Isso permite um fluxo suave e reduz o risco de obstru\u00e7\u00e3o. A maioria das v\u00e1lvulas de esfera de tr\u00eas pe\u00e7as tamb\u00e9m utiliza designs de passagem plena para maior capacidade de vaz\u00e3o.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Alto desempenho de veda\u00e7\u00e3o: Essas v\u00e1lvulas tornam a troca de veda\u00e7\u00f5es e sedes mais acess\u00edvel. Al\u00e9m disso, criam uma veda\u00e7\u00e3o robusta que impede vazamentos, pois fecham hermeticamente quando soldadas.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Facilidade de opera\u00e7\u00e3o: Essas v\u00e1lvulas s\u00e3o ideais para abertura e fechamento frequentes e r\u00e1pidos, bastando girar a alavanca a 90 graus, sem atrito. Elas tamb\u00e9m facilitam a opera\u00e7\u00e3o remota, se necess\u00e1rio.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Manuten\u00e7\u00e3o facilitada: Permitem manuten\u00e7\u00e3o f\u00e1cil, pois o corpo central pode ser removido sem a necessidade de soltar as tampas ou conex\u00f5es de tubula\u00e7\u00e3o, permitindo que a linha continue operando durante a manuten\u00e7\u00e3o. O corpo tamb\u00e9m pode ser manuseado e soldado separadamente, protegendo os componentes internos contra danos.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Contras<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O custo inicial mais elevado em compara\u00e7\u00e3o com outros tipos.\u00a0<\/li>\n\n\n\n<li>Constru\u00e7\u00f5es mais volumosas e complexas.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Crit\u00e9rios de sele\u00e7\u00e3o para projetos de oleodutos e gasodutos<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A sele\u00e7\u00e3o requer a avalia\u00e7\u00e3o do custo total de propriedade, dos requisitos de flanges e dos limites de peso para os suportes de tubula\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As v\u00e1lvulas de duas pe\u00e7as s\u00e3o mais acess\u00edveis na compra inicial em tamanhos menores. Elas tamb\u00e9m oferecem um formato compacto para espa\u00e7os de instala\u00e7\u00e3o reduzidos em esta\u00e7\u00f5es de bombeamento. J\u00e1 as v\u00e1lvulas de tr\u00eas pe\u00e7as s\u00e3o mais adequadas para projetos que exigem a substitui\u00e7\u00e3o frequente da sede.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Al\u00e9m disso, considere o fluido transportado pela tubula\u00e7\u00e3o, como fluidos abrasivos que causam desgaste mais r\u00e1pido nos componentes internos. Em \u00faltima an\u00e1lise, assegure-se de que... <a href=\"https:\/\/www.onerovalve.com\/pt\/blog\/top-10-trunnion-mounted-ball-valve-manufacturers-china\/\">fabricante de v\u00e1lvulas de esfera com munh\u00e3o<\/a> Garante a rastreabilidade completa de todos os materiais utilizados em suas pe\u00e7as. Seguir esses passos assegura que a v\u00e1lvula resista \u00e0s condi\u00e7\u00f5es adversas do transporte de petr\u00f3leo e g\u00e1s.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclus\u00e3o<\/strong><\/h2>\n\n\n\n<style>\n  \/* Optimized Background CTA Card *\/\n  .cta-banner-card {\n    position: relative;\n    display: block;\n    margin: 40px auto; \/* \u5361\u7247\u5c45\u4e2d *\/\n    width: 95%; \n    max-width: 750px; \n    height: 300px; \/* \u9002\u5e94\u5927\u5b57\u53f7\u7684\u9ad8\u5ea6 *\/\n    border-radius: 12px;\n    overflow: hidden; \n    font-family: Arial, sans-serif;\n    box-shadow: 0 4px 15px rgba(0,0,0,0.1);\n    cursor: pointer;\n    text-align: center;\n    background-color: #000;\n    text-decoration: none; \n  }\n  \n  \/* \u80cc\u666f\u56fe\u7247\u5c42 *\/\n  .cta-banner-bg {\n    width: 100%;\n    height: 100%;\n    \/* \u6307\u5b9a\u7684\u80cc\u666f\u56fe *\/\n    background-image: url('https:\/\/www.cnxdauto.com\/wp-content\/uploads\/2025\/10\/A-Single-Source-Solution-.jpg');\n    background-size: cover;\n    background-position: center;\n    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94); \n  }\n\n  \/* \u60ac\u505c\u7f29\u653e\u6548\u679c *\/\n  .cta-banner-card:hover .cta-banner-bg {\n    transform: scale(1.08);\n  }\n\n  \/* \u906e\u7f69\u5c42 *\/\n  .cta-banner-overlay {\n    position: absolute;\n    top: 0;\n    left: 0;\n    width: 100%;\n    height: 100%;\n    background: rgba(0, 0, 0, 0.55); \/* \u534a\u900f\u660e\u906e\u7f69\u786e\u4fdd\u6587\u5b57\u6e05\u6670 *\/\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    align-items: center;\n    padding: 0 25px;\n  }\n\n  .cta-banner-content {\n    width: 100%;\n    max-width: 650px;\n    z-index: 2;\n    text-align: center;\n  }\n\n  \/* \u975e Headline \u5c42\u7ea7\u6807\u9898 *\/\n  .cta-banner-title {\n    color: #ffffff;\n    font-size: 34px; \/* \u52a0\u5927\u5b57\u53f7 *\/\n    font-weight: 700;\n    margin-bottom: 15px;\n    line-height: 1.2;\n    text-shadow: 0 2px 8px rgba(0,0,0,0.7);\n  }\n\n  .cta-banner-desc {\n    color: #f0f0f0;\n    font-size: 18px; \/* \u52a0\u5927\u5b57\u53f7 *\/\n    margin-bottom: 25px;\n    line-height: 1.5;\n    font-weight: 400;\n  }\n\n  \/* \u84dd\u8272\u6309\u94ae\u6837\u5f0f *\/\n  .cta-banner-btn {\n    display: inline-block;\n    padding: 14px 35px;\n    background-color: #083e89; \n    color: #ffffff !important; \n    font-size: 18px; \n    font-weight: bold;\n    text-decoration: none !important;\n    border-radius: 6px;\n    transition: all 0.3s ease;\n    border: 1px solid #083e89;\n  }\n\n  \/* \u6309\u94ae\u60ac\u505c\u6548\u679c\uff1a\u81ea\u52a8\u52a0\u6df1 *\/\n  .cta-banner-btn:hover {\n    background-color: #062e63; \n    border-color: #062e63;\n    transform: translateY(-2px);\n    box-shadow: 0 4px 12px rgba(0,0,0,0.3);\n  }\n\n  \/* \u79fb\u52a8\u7aef\u9002\u914d *\/\n  @media (max-width: 767px) {\n    .cta-banner-card {\n      height: 320px;\n    }\n    .cta-banner-title {\n      font-size: 26px;\n    }\n    .cta-banner-desc {\n      font-size: 16px;\n    }\n  }\n<\/style>\n\n<div class=\"cta-banner-card\">\n  <a href=\"https:\/\/www.cnxdauto.com\/automotive-fastening-solutions\/\" target=\"_blank\" style=\"text-decoration: none;\">\n    <div class=\"cta-banner-bg\"><\/div>\n    <div class=\"cta-banner-overlay\">\n      <div class=\"cta-banner-content\">\n        <div class=\"cta-banner-title\">Uma solu\u00e7\u00e3o de fonte \u00fanica<\/div>\n        <div class=\"cta-banner-desc\">Descubra nossas solu\u00e7\u00f5es completas de fixa\u00e7\u00e3o automotiva, projetadas para precis\u00e3o, durabilidade e padr\u00f5es globais de fabrica\u00e7\u00e3o.<\/div>\n        <div class=\"cta-banner-btn\">Explore as solu\u00e7\u00f5es<\/div>\n      <\/div>\n    <\/div>\n  <\/a>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A escolha entre v\u00e1lvulas de munh\u00e3o de duas ou tr\u00eas pe\u00e7as depende das necessidades de manuten\u00e7\u00e3o e dos riscos de vazamento. As primeiras oferecem um corpo mais simples com menos veda\u00e7\u00f5es para maior seguran\u00e7a em altas press\u00f5es, enquanto as \u00faltimas proporcionam melhor acesso para reparos em linha e maior durabilidade.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.onerovalve.com\/pt\/\">V\u00e1lvula Onero<\/a> Possui uma ampla gama de v\u00e1lvulas de esfera com munh\u00e3o adequadas para aplica\u00e7\u00f5es de alta press\u00e3o (2\u2033\u201348\u2033, 150\u20132500 LB), para o manuseio de \u00e1gua, g\u00e1s, \u00f3leo e fluidos corrosivos de \u2212196 \u00b0C a 350 \u00b0C. Tamb\u00e9m garante uma veda\u00e7\u00e3o herm\u00e9tica, atendendo aos requisitos de seguran\u00e7a. <a href=\"https:\/\/www.onerovalve.com\/pt\/blog\/api-608-vs-api-6d-valve-standards\/\">API 6D<\/a> e normas ASME, com opera\u00e7\u00e3o manual, pneum\u00e1tica ou motorizada.<\/p>","protected":false},"excerpt":{"rendered":"<p>Trunnion-mounted ball valves use a fixed ball design to manage high pressure in large pipelines. Their body structure determines how the valve is assembled and maintained.<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":6325,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Prevent Leaks: 2 Piece Trunnion Ball Valve vs 3 Piece Design<\/title>\n<meta name=\"description\" content=\"Need high-pressure safety or easy maintenance? Find out whether a 2 piece trunnion ball valve or a 3-piece model is best for your pipeline project.\" \/>\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.onerovalve.com\/pt\/blog\/2-piece-vs-3-piece-trunnion-ball-valve\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prevent Leaks: 2 Piece Trunnion Ball Valve vs 3 Piece Design\" \/>\n<meta property=\"og:description\" content=\"Need high-pressure safety or easy maintenance? 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