{"id":689,"date":"2020-05-21T15:13:23","date_gmt":"2020-05-21T18:13:23","guid":{"rendered":"https:\/\/togawaengenharia.com.br\/blog\/?p=689"},"modified":"2026-04-06T08:07:13","modified_gmt":"2026-04-06T11:07:13","slug":"valvulas-industriais-valvulas-de-retencao","status":"publish","type":"post","link":"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-valvulas-de-retencao\/","title":{"rendered":"V\u00e1lvulas Industriais &#8211; V\u00e1lvulas de Reten\u00e7\u00e3o"},"content":{"rendered":"\n<p>Em mais um post de nossa s\u00e9rie sobre v\u00e1lvulas industriais, dessa vez falaremos sobre <strong>v\u00e1lvulas de reten\u00e7\u00e3o<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>Se preferir, temos um v\u00eddeo sobre o assunto no nosso <a rel=\"noreferrer noopener\" aria-label=\"canal no Youtube (abre numa nova aba)\" href=\"https:\/\/www.youtube.com\/channel\/UCZB4W5gS6KeScw9KGdPYf9Q?\" target=\"_blank\">canal no Youtube<\/a>, confira.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><a href=\"https:\/\/youtu.be\/ZbccdyE3EWg\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-1024x577.png\" alt=\"\" class=\"wp-image-714\" width=\"512\" height=\"289\" srcset=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-1024x577.png 1024w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-300x169.png 300w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-768x433.png 768w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-750x423.png 750w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-400x225.png 400w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-430x242.png 430w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-150x85.png 150w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR-100x56.png 100w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/08\/Thumbnail_VR.png 1514w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/figure><\/div>\n\n\n\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link\" href=\"https:\/\/youtu.be\/ZbccdyE3EWg\">Assista Aqui<\/a><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>Veja tamb\u00e9m:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a rel=\"noreferrer noopener\" aria-label=\"V\u00e1lvulas Industriais - Vis\u00e3o Geral (abre numa nova aba)\" href=\"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-visao-geral\/\" target=\"_blank\">V\u00e1lvulas Industriais &#8211; Vis\u00e3o Geral<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"V\u00e1lvulas de Esfera (abre numa nova aba)\" href=\"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-valvulas-esfera\/\" target=\"_blank\">V\u00e1lvulas de Esfera<\/a><\/li><li><a href=\"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-valvulas-globo\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"V\u00e1lvulas Globo (abre numa nova aba)\">V\u00e1lvulas Globo<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00e1lvulas de Reten\u00e7\u00e3o<\/h2>\n\n\n\n<p>V\u00e1lvulas de reten\u00e7\u00e3o s\u00e3o v\u00e1lvulas que permitem passagem de fluido em um \u00fanico sentido, fechando automaticamente por diferen\u00e7a de press\u00e3o, exercida pelo fluido em consequ\u00eancia do pr\u00f3prio escoamento. <\/p>\n\n\n\n<p>Ou seja, se houver tend\u00eancia de invers\u00e3o de sentido de fluxo no escoamento, a v\u00e1lvula de reten\u00e7\u00e3o fecha e bloqueia o fluxo. Por isso, podem ser classificadas com v\u00e1lvulas de opera\u00e7\u00e3o autom\u00e1tica.<\/p>\n\n\n\n<p>V\u00e1lvulas de reten\u00e7\u00e3o s\u00e3o empregadas em qualquer aplica\u00e7\u00e3o que n\u00e3o deve ocorrer fluxo do fluido em sentido contr\u00e1rio ao escoamento padr\u00e3o. Abaixo listamos algumas situa\u00e7\u00f5es t\u00edpicas de aplica\u00e7\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Recalque de bombas, para evitar o retorno de fluxo em parada de opera\u00e7\u00e3o do equipamento;<\/li><li>Suc\u00e7\u00e3o de bombas, quando o ponto de suc\u00e7\u00e3o \u00e9 geometricamente inferior ao n\u00edvel da suc\u00e7\u00e3o, como em po\u00e7os por exemplo &#8211; para isso, s\u00e3o utilizadas as denominadas &#8220;v\u00e1lvulas de p\u00e9&#8221;;<\/li><li>Sa\u00edda de vapor de caldeiras, principalmente para evitar retorno de vapor e pressuriza\u00e7\u00e3o do equipamentos quando fora de opera\u00e7\u00e3o (seja desligado ou em standby).<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Tipos de V\u00e1lvulas de Reten\u00e7\u00e3o<\/h3>\n\n\n\n<p>H\u00e1 v\u00e1rios tipos de v\u00e1lvulas de reten\u00e7\u00e3o. As mais utilizadas s\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Reten\u00e7\u00e3o tipo Disco: <\/strong>consiste em uma montagem com um ou dois discos, pressionado contra o fluxo por uma mola. Quando h\u00e1 press\u00e3o suficiente antes da reten\u00e7\u00e3o, essa abre e deixa passar o fluxo. Dependendo da press\u00e3o da mola (ou melhor, da constante el\u00e1stica k), \u00e9 poss\u00edvel instala-la tanto na horizontal, quanto na vertical.<\/li><li><strong>Reten\u00e7\u00e3o de Portinhola:<\/strong> \u00e9 uma v\u00e1lvula no qual o fechamento \u00e9 feito por uma portinhola articulada que assenta sobre a sede. Dada sua constru\u00e7\u00e3o, deve ser instalada apenas na horizontal.<\/li><li><strong>Reten\u00e7\u00e3o por Esfera:<\/strong> consiste no fechamento por uma esfera, que assenta sobre a sede. Uma aplica\u00e7\u00e3o comum \u00e9 para descarga de m\u00e1quina de lavar roupa!!! No entanto prefiro lembrar de uma de suas varia\u00e7\u00f5es: <strong>o visor retentor<\/strong>, constru\u00eddo com um visor, normalmente de vidro, que permite a visualiza\u00e7\u00e3o de fluxo, tanto pelo fluido em si quanto pelo movimento da esfera.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"369\" height=\"291\" src=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-disco.png\" alt=\"\" data-id=\"690\" data-link=\"https:\/\/togawaengenharia.com.br\/blog\/?attachment_id=690\" class=\"wp-image-690\" srcset=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-disco.png 369w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-disco-300x237.png 300w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-disco-150x118.png 150w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-disco-100x79.png 100w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><figcaption>Reten\u00e7\u00e3o de disco<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"362\" height=\"229\" src=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-portinhola.png\" alt=\"\" data-id=\"691\" data-link=\"https:\/\/togawaengenharia.com.br\/blog\/?attachment_id=691\" class=\"wp-image-691\" srcset=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-portinhola.png 362w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-portinhola-300x190.png 300w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-portinhola-150x95.png 150w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/reten\u00e7\u00e3o-portinhola-100x63.png 100w\" sizes=\"auto, (max-width: 362px) 100vw, 362px\" \/><figcaption>Reten\u00e7\u00e3o de portinhola<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"273\" height=\"232\" src=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/retenc\u00e3o-visor.png\" alt=\"\" data-id=\"692\" data-link=\"https:\/\/togawaengenharia.com.br\/blog\/?attachment_id=692\" class=\"wp-image-692\" srcset=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/retenc\u00e3o-visor.png 273w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/retenc\u00e3o-visor-150x127.png 150w, https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/retenc\u00e3o-visor-100x85.png 100w\" sizes=\"auto, (max-width: 273px) 100vw, 273px\" \/><figcaption>Visor retentor<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Conex\u00f5es<\/h3>\n\n\n\n<p>A conex\u00e3o de v\u00e1lvulas de reten\u00e7\u00e3o mais comuns s\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Instala\u00e7\u00e3o entre flanges<\/li><li>Flangeado<\/li><li>Roscado<\/li><\/ul>\n\n\n\n<p>As imagens acima tamb\u00e9m ilustram esses tipos de conex\u00e3o, na ordem apresentada. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclus\u00e3o<\/h2>\n\n\n\n<p>V\u00e1lvulas de reten\u00e7\u00e3o s\u00e3o elementos essenciais em qualquer instala\u00e7\u00e3o industrial e transporte de fluidos. Por\u00e9m, se n\u00e3o forem corretamente selecionadas e, principalmente, instaladas, podem trazer s\u00e9rios problemas de opera\u00e7\u00e3o e manuten\u00e7\u00e3o.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>Espero ter ajudado com alguma informa\u00e7\u00e3o. Qualquer d\u00favida, informa\u00e7\u00e3o adicional ou coment\u00e1rios, entre em contato: <strong>contato@togawaengenharia.com.br<\/strong>.<\/p>\n\n\n\n<p>Voc\u00ea sabia que n\u00f3s da Togawa Engenharia tamb\u00e9m fornecemos uma variedade de acess\u00f3rios industriais, tais como v\u00e1lvulas, purgadores e conex\u00f5es? Conhe\u00e7a nossa <a href=\"https:\/\/www.loja.togawaengenharia.com.br\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"loja virtual aqui (abre numa nova aba)\">loja virtual aqui<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link has-background\" href=\"https:\/\/www.loja.togawaengenharia.com.br\/\" style=\"background-color:#f7941d\">Loja Togawa<\/a><\/div>\n\n\n\n<p style=\"text-align:left\">Acompanhe a gente tamb\u00e9m em nossas redes sociais:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a rel=\"noreferrer noopener\" aria-label=\"LinkedIn (abre numa nova aba)\" href=\"https:\/\/www.linkedin.com\/company\/togawa-engenharia\/\" target=\"_blank\">LinkedIn<\/a><\/li><li><a href=\"https:\/\/facebook.com\/togawaengenharia\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Facebook (abre numa nova aba)\">Facebook<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Instagram (abre numa nova aba)\" href=\"https:\/\/instagram.com\/togawaengenharia\/\" target=\"_blank\">Instagram<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Artigo sobre v\u00e1lvulas de reten\u00e7\u00e3o, forma construtiva, conex\u00f5es e aplica\u00e7\u00e3o.<\/p>\n","protected":false},"author":1,"featured_media":696,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,40],"tags":[42,43,22],"class_list":["post-689","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industria","category-manutencao","tag-industria","tag-manutencao","tag-valvulas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>V\u00e1lvulas Industriais - V\u00e1lvulas de Reten\u00e7\u00e3o - Togawa Engenharia<\/title>\n<meta name=\"description\" content=\"V\u00e1lvulas de reten\u00e7\u00e3o, forma construtiva, conex\u00e3o e aplica\u00e7\u00e3o.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-valvulas-de-retencao\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"V\u00e1lvulas Industriais - V\u00e1lvulas de Reten\u00e7\u00e3o - Togawa Engenharia\" \/>\n<meta property=\"og:description\" content=\"V\u00e1lvulas de reten\u00e7\u00e3o, forma construtiva, conex\u00e3o e aplica\u00e7\u00e3o.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-valvulas-de-retencao\/\" \/>\n<meta property=\"og:site_name\" content=\"Togawa Engenharia\" \/>\n<meta property=\"article:published_time\" content=\"2020-05-21T18:13:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-06T11:07:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/togawaengenharia.com.br\/blog\/wp-content\/uploads\/2020\/05\/v\u00e1lvulas-Industriais-v\u00e1lvulas-reten\u00e7\u00e3o.png\" \/>\n\t<meta property=\"og:image:width\" content=\"2002\" \/>\n\t<meta property=\"og:image:height\" content=\"832\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Victor Togawa\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Victor Togawa\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-valvulas-de-retencao\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/togawaengenharia.com.br\/blog\/valvulas-industriais-valvulas-de-retencao\/\"},\"author\":{\"name\":\"Victor Togawa\",\"@id\":\"https:\/\/togawaengenharia.com.br\/blog\/#\/schema\/person\/2b97ffcae08c230f737a2572c9cb161d\"},\"headline\":\"V\u00e1lvulas Industriais &#8211; 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