{"id":48322,"date":"2020-08-26T12:58:52","date_gmt":"2020-08-26T10:58:52","guid":{"rendered":"https:\/\/obera.fr\/os-nossos-produtos\/materiais-e-equipamentos-atex\/valvula-anti-retorno-atex\/"},"modified":"2025-06-02T10:37:50","modified_gmt":"2025-06-02T08:37:50","slug":"clapet-anti-retour","status":"publish","type":"page","link":"https:\/\/obera.fr\/pt-pt\/produits\/atex\/clapet-anti-retour\/","title":{"rendered":"V\u00e1lvula anti-retorno ATEX"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"175\" height=\"175\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/09\/Clapet-anti-retour-ATEX-1-175x175-1.png\" alt=\"V\u00e1lvula de reten\u00e7\u00e3o Atex 1 175x175 1\" class=\"wp-image-990\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/09\/Clapet-anti-retour-ATEX-1-175x175-1.png 175w, https:\/\/obera.fr\/wp-content\/uploads\/2020\/09\/Clapet-anti-retour-ATEX-1-175x175-1-150x150.png 150w\" sizes=\"(max-width: 175px) 100vw, 175px\" \/><figcaption class=\"wp-element-caption\">V\u00e1lvula anti-retorno ATEX<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p><strong>As v\u00e1lvulas anti-retorno ATEX<\/strong> s\u00e3o dispositivos de seguran\u00e7a utilizados na ind\u00fastria para impedir que gases ou l\u00edquidos voltem a fluir para dentro de tubos e condutas. Foram concebidas para utiliza\u00e7\u00e3o em ambientes potencialmente explosivos, onde a presen\u00e7a de gases ou poeiras inflam\u00e1veis pode causar explos\u00f5es e p\u00f4r em risco a seguran\u00e7a dos trabalhadores. O termo ATEX refere-se \u00e0 Diretiva Europeia 2014\/34\/UE, que estabelece os requisitos para o equipamento utilizado em ambientes explosivos.  <\/p>\n\n\n\n<p>As v\u00e1lvulas anti-retorno ATEX est\u00e3o em conformidade com esta diretiva e foram concebidas para cumprir as mais elevadas normas de seguran\u00e7a para prote\u00e7\u00e3o contra explos\u00e3o.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/obera.fr\/wp-content\/uploads\/2025\/06\/clapet-anti-retour-atex-en.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Descarrega a brochura<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<div class=\"wp-block-buttons is-horizontal is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-03627597 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/obera.fr\/pt-pt\/contacta-nos\/\">Saber mais<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button btn-devis-source\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/obera.fr\/pt-pt\/devis\/\">Solicita um or\u00e7amento<\/a><\/div>\n<\/div>\n\n\n<script>\r\ndocument.addEventListener('DOMContentLoaded', function() {\r\n    \/\/ 1. On cherche le titre H1 de la page\r\n    var h1 = document.querySelector('h1');\r\n    var productTitle = h1 ? h1.innerText.trim() : \"\";\r\n\r\n    \/\/ 2. On cherche les boutons via la classe CSS .btn-devis-source\r\n    var buttons = document.querySelectorAll('.btn-devis-source a');\r\n\r\n    \/\/ 3. Si on a le titre et les boutons, on ajoute le param\u00e8tre\r\n    if (buttons.length > 0 && productTitle !== \"\") {\r\n        var encodedTitle = encodeURIComponent(productTitle);\r\n\r\n        buttons.forEach(function(btn) {\r\n            var currentHref = btn.getAttribute('href');\r\n            \r\n            \/\/ S\u00e9curit\u00e9 pour ne pas ajouter le param\u00e8tre 2 fois\r\n            if (currentHref.indexOf('sujet=') === -1) {\r\n                var separator = currentHref.indexOf('?') !== -1 ? '&' : '?';\r\n                var newLink = currentHref + separator + 'sujet=' + encodedTitle;\r\n                \r\n                btn.setAttribute('href', newLink);\r\n            }\r\n        });\r\n    }\r\n});\r\n<\/script><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Como funciona uma v\u00e1lvula anti-retorno ATEX<\/h2>\n\n\n\n<p>O funcionamento das v\u00e1lvulas anti-retorno ATEX \u00e9 bastante simples. S\u00e3o instalados em tubos e condutas para evitar que os fluidos voltem a fluir na dire\u00e7\u00e3o oposta.<\/p>\n\n\n\n<p>O funcionamento das v\u00e1lvulas anti-retorno ATEX \u00e9 bastante simples. S\u00e3o constitu\u00eddos por uma caixa, um disco e uma mola. O inv\u00f3lucro \u00e9 instalado na conduta ou tubo de transporte e o disco \u00e9 colocado no interior do inv\u00f3lucro. A mola est\u00e1 localizada no disco e \u00e9 utilizada para manter a press\u00e3o constante na v\u00e1lvula. Quando o fluido flui na dire\u00e7\u00e3o certa, o disco levanta-se, permitindo que o fluido passe atrav\u00e9s da v\u00e1lvula. Quando o fluido tenta voltar a fluir, o disco fecha-se automaticamente, impedindo que o fluido volte a fluir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A utiliza\u00e7\u00e3o de v\u00e1lvulas anti-retorno ATEX<\/h2>\n\n\n\n<p>As v\u00e1lvulas anti-retorno ATEX s\u00e3o utilizadas numa grande variedade de aplica\u00e7\u00f5es industriais, incluindo os sectores do petr\u00f3leo e g\u00e1s, qu\u00edmico, farmac\u00eautico, alimentar e de bebidas e de produ\u00e7\u00e3o de energia. S\u00e3o frequentemente utilizados em sistemas de tubagens para evitar explos\u00f5es e inc\u00eandios, mas tamb\u00e9m podem ser utilizados em equipamentos individuais, como v\u00e1lvulas ou bombas.<\/p>\n\n\n\n<p>As v\u00e1lvulas anti-retorno ATEX s\u00e3o particularmente importantes nas ind\u00fastrias onde existe o risco de explos\u00e3o ou inc\u00eandio. Se uma v\u00e1lvula de reten\u00e7\u00e3o falhar ou avariar, os gases ou l\u00edquidos inflam\u00e1veis podem voltar a fluir para o sistema, levando a uma acumula\u00e7\u00e3o de press\u00e3o e a uma poss\u00edvel explos\u00e3o ou inc\u00eandio. As v\u00e1lvulas anti-retorno ATEX s\u00e3o, portanto, essenciais para garantir a seguran\u00e7a dos trabalhadores, do equipamento e do ambiente nestas ind\u00fastrias.<\/p>\n\n\n\n<p>Para al\u00e9m da sua utilidade na preven\u00e7\u00e3o de explos\u00f5es e inc\u00eandios, as v\u00e1lvulas anti-retorno ATEX t\u00eam outras vantagens para as empresas. Por exemplo, podem reduzir os custos de manuten\u00e7\u00e3o, prolongando a vida \u00fatil do equipamento, reduzindo o tempo de inatividade e evitando repara\u00e7\u00f5es dispendiosas. Podem tamb\u00e9m ajudar a melhorar a efici\u00eancia energ\u00e9tica, reduzindo as perdas de press\u00e3o e minimizando as fugas de produtos perigosos.<\/p>\n\n\n\n<p>Devido ao ambiente potencialmente perigoso em que s\u00e3o utilizadas, as v\u00e1lvulas anti-retorno ATEX est\u00e3o sujeitas a regulamentos rigorosos para garantir a sua fiabilidade e seguran\u00e7a. As normas de conce\u00e7\u00e3o e desempenho s\u00e3o estabelecidas por organismos como a Ag\u00eancia Europeia para a Seguran\u00e7a e a Sa\u00fade no Trabalho (EU-OSHA).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Especifica\u00e7\u00f5es t\u00e9cnicas<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>V\u00e1lvula anti-retorno<\/td><td>Carater\u00edsticas<\/td><\/tr><tr><td>Gama de temperaturas de funcionamento<\/td><td>-20\u00b0C M\u00e1ximo +40\u00b0C<\/td><\/tr><tr><td>Kst max<\/td><td>200 bar m\/s<\/td><\/tr><tr><td>Velocidade m\u00e1xima do ar<\/td><td>30 m\/s<\/td><\/tr><tr><td>Pred max<\/td><td>0,5 bar<\/td><\/tr><tr><td>Press\u00e3o de trabalho<\/td><td>50.000 Pa<\/td><\/tr><tr><td>N\u00edvel de prote\u00e7\u00e3o<\/td><td>St1 (org\u00e2nico e n\u00e3o met\u00e1lico)<\/td><\/tr><tr><td>\u00c1rea de aplica\u00e7\u00e3o<\/td><td>20 &#8211; 21 &#8211; 22 (interior)<br>21 &#8211; 22 (exterior)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/obera.fr\/contact\/\">Precisas de aconselhamento personalizado?<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">As vantagens<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\"><strong>Benef\u00edcios<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Elimina o risco de propaga\u00e7\u00e3o de uma explos\u00e3o.<\/li>\n\n\n\n<li>Evita que o p\u00f3 seja expelido para tr\u00e1s quando o sistema \u00e9 desligado.<\/li>\n\n\n\n<li>Alta resist\u00eancia \u00e0 press\u00e3o<\/li>\n\n\n\n<li>N\u00e3o consome energia<\/li>\n\n\n\n<li>Totalmente mec\u00e2nico, n\u00e3o necessita de manuten\u00e7\u00e3o.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\"><strong>Carater\u00edsticas especiais<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sistema de prote\u00e7\u00e3o certificado<\/li>\n\n\n\n<li>Normas ATEX<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\"><strong>Carater\u00edsticas<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Equipamentos fabricados com garantia de qualidade de produ\u00e7\u00e3o<\/li>\n\n\n\n<li>Dispon\u00edvel nas vers\u00f5es com bra\u00e7adeira ou flange.<\/li>\n\n\n\n<li>Adequado para o transporte de poeiras explosivas da classe St1.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Aplica\u00e7\u00f5es<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\">Ind\u00fastrias<\/h3>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"70\" height=\"70\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/08\/industrie-metallurgie.jpg\" alt=\"Ind\u00fastria metal\u00fargica\" class=\"wp-image-673\"\/><figcaption class=\"wp-element-caption\">Metalurgia<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"70\" height=\"70\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/08\/industrie-agroalimentaire.jpg\" alt=\"Ind\u00fastria alimentar\" class=\"wp-image-727\"\/><figcaption class=\"wp-element-caption\">Ind\u00fastria alimentar<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"70\" height=\"70\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/08\/industrie-minerai.jpg\" alt=\"Ind\u00fastria do min\u00e9rio\" class=\"wp-image-724\"\/><figcaption class=\"wp-element-caption\">Minerais<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"70\" height=\"70\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/08\/industrie-bois.jpg\" alt=\"Ind\u00fastria da madeira\" class=\"wp-image-672\"\/><figcaption class=\"wp-element-caption\">Trabalhos em madeira<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"70\" height=\"70\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/08\/industrie-papier-carton.jpg\" alt=\"Ind\u00fastria do papel e do cart\u00e3o\" class=\"wp-image-670\"\/><figcaption class=\"wp-element-caption\">Papel\/cart\u00e3o<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"70\" height=\"70\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/08\/industrie-textile.jpg\" alt=\"Ind\u00fastria t\u00eaxtil\" class=\"wp-image-671\"\/><figcaption class=\"wp-element-caption\">T\u00eaxteis<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>As v\u00e1lvulas anti-retorno ATEX s\u00e3o dispositivos de seguran\u00e7a utilizados na ind\u00fastria para impedir que gases ou l\u00edquidos voltem a fluir para dentro de tubos e condutas. Foram concebidas para utiliza\u00e7\u00e3o em ambientes potencialmente explosivos, onde a presen\u00e7a de gases ou poeiras inflam\u00e1veis pode causar explos\u00f5es e p\u00f4r em risco a seguran\u00e7a dos trabalhadores. O termo ATEX refere-se \u00e0 Diretiva Europeia 2014\/34\/UE, que estabelece os requisitos para o equipamento utilizado em ambientes explosivos. As v\u00e1lvulas anti-retorno ATEX est\u00e3o em conformidade com esta diretiva e foram concebidas para cumprir as mais elevadas normas de seguran\u00e7a para prote\u00e7\u00e3o contra explos\u00e3o. Como funciona uma &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"V\u00e1lvula anti-retorno ATEX\" class=\"read-more button\" href=\"https:\/\/obera.fr\/pt-pt\/produits\/atex\/clapet-anti-retour\/#more-48322\" aria-label=\"Leia mais sobre V\u00e1lvula anti-retorno ATEX\">Lire la suite<\/a><\/p>\n","protected":false},"author":4,"featured_media":83747,"parent":37756,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"V\u00e1lvula anti-retorno ATEX concebida para resistir a uma explos\u00e3o","_seopress_titles_desc":"Podem impedir a transmiss\u00e3o dos efeitos perigosos de uma explos\u00e3o e isolar \u00e1reas com uma atmosfera de poeira potencialmente explosiva.","_seopress_robots_index":"","footnotes":""},"class_list":{"0":"post-48322","1":"page","2":"type-page","3":"status-publish","4":"has-post-thumbnail","6":"no-featured-image-padding","7":"resize-featured-image"},"acf":[],"_links":{"self":[{"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/pages\/48322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/comments?post=48322"}],"version-history":[{"count":5,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/pages\/48322\/revisions"}],"predecessor-version":[{"id":105736,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/pages\/48322\/revisions\/105736"}],"up":[{"embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/pages\/37756"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/media\/83747"}],"wp:attachment":[{"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/media?parent=48322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}