{"id":19015,"date":"2025-10-16T08:06:11","date_gmt":"2025-10-16T08:06:11","guid":{"rendered":"https:\/\/hydraflu.com\/?p=19015"},"modified":"2025-10-16T08:12:42","modified_gmt":"2025-10-16T08:12:42","slug":"como-ler-um-diagrama-de-valvula-de-carretel-hidraulico","status":"publish","type":"post","link":"https:\/\/hydraflu.com\/pt\/how-to-read-a-hdyraulic-spool-valve-diagram\/","title":{"rendered":"Como ler um diagrama de v\u00e1lvula hidrost\u00e1tica"},"content":{"rendered":"<p><img data-dominant-color=\"9ea5af\" data-has-transparency=\"false\" style=\"--dominant-color: #9ea5af;\" loading=\"lazy\" decoding=\"async\" class=\"wp-image-19036 alignright not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/valve-1.jpg\" alt=\"v\u00e1lvula de carretel hidr\u00e1ulica\" width=\"225\" height=\"121\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/valve-1.jpg 531w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/valve-1-18x10.jpg 18w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">A principal fun\u00e7\u00e3o da v\u00e1lvula de carretel \u00e9 controlar a dire\u00e7\u00e3o do fluxo da fonte de energia, combinando ou alternando os caminhos. Se isso ser\u00e1 feito por meio de \u00f3leo ou ar depende do sistema em que a v\u00e1lvula de carretel est\u00e1 operando. Agora, falarei principalmente sobre a v\u00e1lvula de carretel no contexto de... <a href=\"https:\/\/hydraflu.com\/pt\/tipos-de-componentes-de-sistemas-hidraulicos-exemplos\/\">sistema hidr\u00e1ulico.<\/a><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vamos aprender como ler um diagrama de v\u00e1lvula de carretel e sua representa\u00e7\u00e3o no desenho do sistema. Isso ajudar\u00e1 voc\u00ea a entender o funcionamento de diferentes configura\u00e7\u00f5es da v\u00e1lvula de carretel.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Qual \u00e9 o princ\u00edpio de funcionamento de uma v\u00e1lvula de carretel?<\/span><\/h2>\n<h3 style=\"text-align: left;\"><span style=\"font-weight: 400;\">Constru\u00e7\u00e3o de uma v\u00e1lvula de carretel<a href=\"https:\/\/hydraflu.com\/pt\/\"><img data-dominant-color=\"858481\" data-has-transparency=\"false\" style=\"--dominant-color: #858481;\" loading=\"lazy\" decoding=\"async\" class=\"wp-image-19042 alignright not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/Hydraulic-station-e1760601905947.jpg\" alt=\"Esta\u00e7\u00e3o hidr\u00e1ulica\" width=\"241\" height=\"321\" \/><\/a><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Uma v\u00e1lvula tipo carretel \u00e9 um tipo de <a href=\"https:\/\/hydraflu.com\/pt\/valvula-hidraulica\/valvula-de-controle-direcional\/\">v\u00e1lvula de controle direcional<\/a>. Seu componente principal \u00e9 um carretel cil\u00edndrico que se move dentro de uma luva ou corpo correspondente para abrir e fechar passagens de fluxo entre diferentes portas, direcionando o fluxo de fluido em sistemas hidr\u00e1ulicos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vamos come\u00e7ar aprendendo sobre o diagrama de uma v\u00e1lvula de carretel hidr\u00e1ulica e sua representa\u00e7\u00e3o no desenho do sistema. Isso ajudar\u00e1 voc\u00ea a entender o funcionamento das diferentes configura\u00e7\u00f5es da v\u00e1lvula de carretel.\u00a0<\/span><\/p>\n<p><img data-dominant-color=\"e8e8e8\" data-has-transparency=\"false\" style=\"--dominant-color: #e8e8e8;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-19017 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/9.jpg\" alt=\"\" width=\"417\" height=\"242\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/9.jpg 417w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/9-18x10.jpg 18w\" sizes=\"auto, (max-width: 417px) 100vw, 417px\" \/><\/p>\n<h3>Explique o funcionamento da v\u00e1lvula de carretel.<\/h3>\n<p><span style=\"font-weight: 400;\">Vamos usar uma v\u00e1lvula direcional comum para ilustrar o princ\u00edpio de funcionamento da v\u00e1lvula de carretel hidr\u00e1ulica. O diagrama acima mostra o esquema do circuito de \u00f3leo de uma v\u00e1lvula solen\u00f3ide de centro fechado, juntamente com o desenho esquem\u00e1tico correspondente da v\u00e1lvula de carretel.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">No estado desenergizado, o carretel geralmente \u00e9 mantido em uma posi\u00e7\u00e3o padr\u00e3o por uma mola. Nesse estado, o fluxo \u00e9 bloqueado em todas as quatro portas. As portas A e B est\u00e3o conectadas aos cilindros, a porta P est\u00e1 conectada ao motor e \u00e0 bomba, e a porta T est\u00e1 conectada ao reservat\u00f3rio.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Quando o solenoide \u00e9 energizado, a for\u00e7a eletromagn\u00e9tica gerada empurra ou puxa o carretel, comprimindo a mola e movendo-o para uma segunda ou terceira posi\u00e7\u00e3o. Se o carretel for empurrado para a direita, essa nova posi\u00e7\u00e3o altera os caminhos do fluxo, da Porta P para a Porta B, da Porta A para a Porta T. Se o carretel for empurrado na dire\u00e7\u00e3o oposta, os caminhos do fluxo ser\u00e3o da Porta P para a Porta A, da Porta B para a Porta T.<\/span><\/p>\n<h2><b>Como ler um diagrama de v\u00e1lvula hidr\u00e1ulica de carretel<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Agora podemos aprender como uma v\u00e1lvula de carretel \u00e9 representada em desenhos de engenharia e como ler um diagrama esquem\u00e1tico de uma v\u00e1lvula de carretel.<\/span><\/p>\n<h3><b>S\u00edmbolo e diagrama da v\u00e1lvula de carretel<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Em desenhos de engenharia, <a href=\"https:\/\/hydraflu.com\/pt\/simbolos-esquematicos-hidraulicos\/\">s\u00edmbolos esquem\u00e1ticos hidr\u00e1ulicos<\/a> Fornecem informa\u00e7\u00f5es detalhadas sobre a v\u00e1lvula que representam. Consequentemente, \u00e9 imprescind\u00edvel compreender os s\u00edmbolos para determinar o sentido de passagem da v\u00e1lvula de carretel.<\/span><\/p>\n<p><img data-dominant-color=\"fbf8f8\" data-has-transparency=\"false\" style=\"--dominant-color: #fbf8f8;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19018 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/10.webp\" alt=\"diagrama da v\u00e1lvula de carretel\" width=\"1448\" height=\"981\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/10.webp 1448w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/10-768x520.webp 768w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/10-18x12.webp 18w\" sizes=\"auto, (max-width: 1448px) 100vw, 1448px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Os s\u00edmbolos mostram:<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">Os m\u00e9todos de atua\u00e7\u00e3o<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">O n\u00famero de posi\u00e7\u00f5es<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">Os caminhos do fluxo<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">O n\u00famero de portas que uma v\u00e1lvula possui.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Ao observarmos o diagrama esquem\u00e1tico de uma v\u00e1lvula de carretel, podemos notar que ele \u00e9 composto por caixas que indicam o n\u00famero de posi\u00e7\u00f5es poss\u00edveis da v\u00e1lvula. Cada caixa cont\u00e9m diversas linhas e setas que representam os caminhos do fluxo. Os s\u00edmbolos pr\u00f3ximos \u00e0s laterais da caixa indicam o m\u00e9todo de acionamento, como bobinas eletromagn\u00e9ticas, molas ou opera\u00e7\u00e3o piloto para comuta\u00e7\u00e3o do carretel da v\u00e1lvula.<\/span><\/p>\n<h2 style=\"font-style: normal;\"><img data-dominant-color=\"e0e0e0\" data-has-transparency=\"false\" style=\"--dominant-color: #e0e0e0;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19020 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/11-1.png\" alt=\"S\u00edmbolo da v\u00e1lvula de carretel em desenho esquem\u00e1tico hidr\u00e1ulico\" width=\"500\" height=\"314\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/11-1.png 500w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/11-1-18x12.png 18w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/h2>\n<h2>Diagramas esquem\u00e1ticos para configura\u00e7\u00f5es comuns de v\u00e1lvulas de carretel<\/h2>\n<p><span style=\"font-weight: 400;\">Aqui est\u00e3o os diagramas dos principais tipos de v\u00e1lvulas mencionados no artigo. As linhas externas conectadas \u00e0s caixas representam as portas (P, T, A, B, etc.). As linhas internas e as setas mostram os caminhos do fluxo para cada posi\u00e7\u00e3o.<\/span><\/p>\n<h3><b>1.<\/b><span style=\"font-weight: 400;\"> \u00a0 \u00a0 <\/span><b>V\u00e1lvula 2\/2 (2 vias, 2 posi\u00e7\u00f5es)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Esta \u00e9 uma v\u00e1lvula liga\/desliga simples. O acionamento \u00e9 feito por bobina eletromagn\u00e9tica. Sua fun\u00e7\u00e3o \u00e9 controlar o fluxo entre uma entrada (P) e uma sa\u00edda (A).<\/span><\/p>\n<p><img data-dominant-color=\"f7f7f7\" data-has-transparency=\"false\" style=\"--dominant-color: #f7f7f7;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19021 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-2-w.jpg\" alt=\"2 vias, 2 posi\u00e7\u00f5es\" width=\"286\" height=\"156\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-2-w.jpg 286w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-2-w-18x10.jpg 18w\" sizes=\"auto, (max-width: 286px) 100vw, 286px\" \/><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">Posi\u00e7\u00e3o 1 (esquerda): A linha que conecta as portas P e A mostra que o fluxo pode passar pela v\u00e1lvula.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">Posi\u00e7\u00e3o 2 (direita): A linha bloqueada indica que o caminho est\u00e1 fechado. Nenhum fluxo pode passar.<\/span><\/li>\n<\/ul>\n<h3><b>2.<\/b><span style=\"font-weight: 400;\"> \u00a0 \u00a0 <\/span><b>V\u00e1lvula 3\/2 (3 vias, 2 posi\u00e7\u00f5es)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Esta v\u00e1lvula \u00e9 comum para controlar cilindros de a\u00e7\u00e3o simples. A posi\u00e7\u00e3o padr\u00e3o geralmente \u00e9 o retorno por mola. Sua fun\u00e7\u00e3o \u00e9, em uma posi\u00e7\u00e3o, enviar press\u00e3o para um atuador (A). Na outra, ela libera a press\u00e3o do atuador (A para T).<\/span><\/p>\n<p><img data-dominant-color=\"f6f6f6\" data-has-transparency=\"false\" style=\"--dominant-color: #f6f6f6;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19023 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-A-1.jpg\" alt=\"3 vias, 2 posi\u00e7\u00f5es\" width=\"283\" height=\"164\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-A-1.jpg 283w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-A-1-18x10.jpg 18w\" sizes=\"auto, (max-width: 283px) 100vw, 283px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Lendo o diagrama:<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">Posi\u00e7\u00e3o acionada (esquerda): A press\u00e3o (P) flui para a porta de trabalho (A). A porta do tanque (T) est\u00e1 bloqueada.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 \u00a0 <\/span><span style=\"font-weight: 400;\">Posi\u00e7\u00e3o de Retorno (Direita): A porta de trabalho (A) est\u00e1 conectada ao tanque\/exaust\u00e3o (T). A press\u00e3o (P) est\u00e1 bloqueada. Isso permite que a mola em um cilindro de a\u00e7\u00e3o simples se retraia, empurrando o fluido para fora atrav\u00e9s de T.<\/span><\/li>\n<\/ol>\n<p><img data-dominant-color=\"f6f6f6\" data-has-transparency=\"false\" style=\"--dominant-color: #f6f6f6;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19024 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-B.jpg\" alt=\"3 vias, 2 posi\u00e7\u00f5es\" width=\"281\" height=\"164\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-B.jpg 281w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-B-18x12.jpg 18w\" sizes=\"auto, (max-width: 281px) 100vw, 281px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Lendo o diagrama:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Posi\u00e7\u00e3o padr\u00e3o (esquerda): O fluxo da porta de trabalho (A) para a porta do tanque (T). A press\u00e3o (P) est\u00e1 bloqueada. Isso permite que a mola em um cilindro de a\u00e7\u00e3o simples se retraia, empurrando o fluido para fora atrav\u00e9s de T.<\/span><\/li>\n<\/ol>\n<ol start=\"2\">\n<li><span style=\"font-weight: 400;\"> \u00a0 Posi\u00e7\u00e3o de retorno (direita): A porta de trabalho (A) est\u00e1 bloqueada. A press\u00e3o (P) est\u00e1 conectada ao tanque\/exaust\u00e3o (T).\u00a0<\/span><\/li>\n<\/ol>\n<p><img data-dominant-color=\"f6f5f5\" data-has-transparency=\"false\" style=\"--dominant-color: #f6f5f5;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19025 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-C.jpg\" alt=\"3 vias, 2 posi\u00e7\u00f5es\" width=\"281\" height=\"165\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-C.jpg 281w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-3-W-C-18x12.jpg 18w\" sizes=\"auto, (max-width: 281px) 100vw, 281px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Lendo o diagrama:<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> \u00a0 Posi\u00e7\u00e3o padr\u00e3o (esquerda): O fluxo da porta de trabalho (A) para a porta do tanque (T). A press\u00e3o (P) est\u00e1 bloqueada. Isso permite que a mola em um cilindro de a\u00e7\u00e3o simples se retraia, empurrando o fluido para fora atrav\u00e9s de T.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 Posi\u00e7\u00e3o de retorno (direita): A press\u00e3o (P) flui para a porta de trabalho (A). A porta do tanque (T) est\u00e1 bloqueada.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3><b>3. V\u00e1lvula 4\/2 (4 vias, 2 posi\u00e7\u00f5es)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Este tipo de v\u00e1lvula \u00e9 comum para o controle de cilindros de dupla a\u00e7\u00e3o. Sua fun\u00e7\u00e3o \u00e9, em uma posi\u00e7\u00e3o, enviar press\u00e3o para um atuador (A) e, simultaneamente, liberar o atuador (B a T). Em outra posi\u00e7\u00e3o, envia press\u00e3o para um atuador (B) e, simultaneamente, libera o atuador (A a T).\u00a0<\/span><\/p>\n<p><img data-dominant-color=\"030303\" data-has-transparency=\"true\" style=\"--dominant-color: #030303;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19027 has-transparency\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-4-W-B.png\" alt=\"4 vias, 2 posi\u00e7\u00f5es\" width=\"283\" height=\"166\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-4-W-B.png 283w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-4-W-B-18x12.png 18w\" sizes=\"auto, (max-width: 283px) 100vw, 283px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Lendo o diagrama:<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> \u00a0 Posi\u00e7\u00e3o padr\u00e3o (esquerda): A press\u00e3o (P) flui para a porta de trabalho (A), a porta (B) conecta-se \u00e0 porta do tanque (T).<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 Posi\u00e7\u00e3o de retorno (direita): A press\u00e3o (P) flui para a porta de trabalho (B). A porta (A) conecta-se \u00e0 porta (T) do tanque.<\/span><\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\"><img data-dominant-color=\"f6f6f6\" data-has-transparency=\"false\" style=\"--dominant-color: #f6f6f6;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19030 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-4-W-A-2.jpg\" alt=\"4 vias, 2 posi\u00e7\u00f5es\" width=\"286\" height=\"166\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-4-W-A-2.jpg 286w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/2-p-4-W-A-2-18x10.jpg 18w\" sizes=\"auto, (max-width: 286px) 100vw, 286px\" \/><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Lendo o diagrama:<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> \u00a0 Posi\u00e7\u00e3o padr\u00e3o (esquerda): A v\u00e1lvula est\u00e1 bloqueada. N\u00e3o h\u00e1 passagem de fluxo atrav\u00e9s da v\u00e1lvula.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> \u00a0 Posi\u00e7\u00e3o de retorno (direita): A press\u00e3o (P) flui para a porta de trabalho (B). A porta (A) conecta-se \u00e0 porta (T) do tanque.<\/span><\/li>\n<\/ol>\n<h3><b>4. V\u00e1lvula 4\/3 (4 vias, 3 posi\u00e7\u00f5es) \u2013 Quatro configura\u00e7\u00f5es centrais comuns<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Esta \u00e9 a v\u00e1lvula mais cr\u00edtica para sistemas hidr\u00e1ulicos. O comportamento na posi\u00e7\u00e3o central \u00e9 o que as diferencia.<\/span><\/p>\n<h4><strong>1. V\u00e1lvula de centro fechado<\/strong><\/h4>\n<p><img data-dominant-color=\"040304\" data-has-transparency=\"true\" style=\"--dominant-color: #040304;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19031 has-transparency\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-B.png\" alt=\"V\u00e1lvula de carretel de centro fechado\" width=\"287\" height=\"176\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-B.png 287w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-B-18x12.png 18w\" sizes=\"auto, (max-width: 287px) 100vw, 287px\" \/><\/p>\n<p><b>Todas as portas est\u00e3o bloqueadas na posi\u00e7\u00e3o central.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Ao interromper o fluxo da bomba, isso trava o atuador, impedindo o movimento, uma caracter\u00edstica que requer uma v\u00e1lvula de al\u00edvio da bomba.<\/span><\/p>\n<h4><b>2. V\u00e1lvula central aberta<\/b><\/h4>\n<p><img data-dominant-color=\"f2f2f2\" data-has-transparency=\"false\" style=\"--dominant-color: #f2f2f2;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19032 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-D.jpg\" alt=\"V\u00e1lvula de carretel central aberta\" width=\"300\" height=\"176\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-D.jpg 300w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-D-18x12.jpg 18w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><b>As portas P, A e B est\u00e3o todas conectadas \u00e0 porta T.<\/b><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A fun\u00e7\u00e3o desta v\u00e1lvula, conforme ilustrado no diagrama, \u00e9 descarregar a bomba, direcionando o atuador para a sua posi\u00e7\u00e3o neutra.<\/span><\/p>\n<h4><b>3. V\u00e1lvula central em tandem<\/b><\/h4>\n<p><img data-dominant-color=\"f3f3f3\" data-has-transparency=\"false\" style=\"--dominant-color: #f3f3f3;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19034 not-transparent\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-A.jpg\" alt=\"V\u00e1lvula central em tandem\" width=\"306\" height=\"176\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-A.jpg 306w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-A-18x10.jpg 18w\" sizes=\"auto, (max-width: 306px) 100vw, 306px\" \/><\/p>\n<p><b>A porta P est\u00e1 conectada \u00e0 porta T no centro, enquanto as portas A e B est\u00e3o bloqueadas.<\/b><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Esta v\u00e1lvula descarrega a bomba, retornando o fluxo para o tanque em baixa press\u00e3o, travando assim o atuador no lugar.<\/span><\/p>\n<h4><b style=\"font-style: inherit;\">4. V\u00e1lvula central flutuante<\/b><\/h4>\n<p><img data-dominant-color=\"050505\" data-has-transparency=\"true\" style=\"--dominant-color: #050505;\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19035 has-transparency\" src=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-C.png\" alt=\"V\u00e1lvula central flutuante\" width=\"288\" height=\"176\" srcset=\"https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-C.png 288w, https:\/\/hydraflu.com\/wp-content\/uploads\/2025\/10\/3-p-4-W-C-18x12.png 18w\" sizes=\"auto, (max-width: 288px) 100vw, 288px\" \/><\/p>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Centros de v\u00e1lvulas de controle direcional\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Ux7WHgYngZE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p><b>A porta P est\u00e1 bloqueada, enquanto as portas A, B e T est\u00e3o conectadas.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Este s\u00edmbolo gr\u00e1fico de v\u00e1lvula de carretel mostra que sua fun\u00e7\u00e3o \u00e9 manter a press\u00e3o da bomba constante com o atuador em posi\u00e7\u00e3o neutra.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><b>Como usar diagramas de v\u00e1lvulas hidr\u00e1ulicas de carretel<\/b><\/h2>\n<h3><b>Siga as rotas<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Siga as linhas e setas dentro da caixa correspondente para cada posi\u00e7\u00e3o da v\u00e1lvula. Identifique os terminais que est\u00e3o ativos e os que est\u00e3o inativos.<\/span><\/p>\n<h3><b>Relacionar com o atuador<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A a\u00e7\u00e3o do atuador (estender, retrair, travar ou flutuar) pode ser determinada pela verifica\u00e7\u00e3o do estado dos terminais A e B.<\/span><\/p>\n<h3><b>Avalie o sistema<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A efic\u00e1cia, a efici\u00eancia energ\u00e9tica e a seguran\u00e7a do sistema s\u00e3o diretamente influenciadas pela configura\u00e7\u00e3o da posi\u00e7\u00e3o central.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>The main job of the spool valve is to control the direction of the flow of the energy source by either combining or switching the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-19015","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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