{"id":16486,"date":"2022-06-21T06:46:49","date_gmt":"2022-06-21T06:46:49","guid":{"rendered":"https:\/\/zecovalve.com\/?p=16486"},"modified":"2023-02-23T06:33:35","modified_gmt":"2023-02-23T06:33:35","slug":"characteristics-and-selection-of-17-kinds-of-globe-valves","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/pt\/characteristics-and-selection-of-17-kinds-of-globe-valves.html","title":{"rendered":"Caracter\u00edsticas e sele\u00e7\u00e3o de 17 tipos de v\u00e1lvulas de globo"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Caracter\u00edsticas de fluxo da v\u00e1lvula globo<\/h2>\n\n\n\n<p>As partes de abertura e fechamento da v\u00e1lvula de bloqueio (v\u00e1lvula globo) s\u00e3o discos em forma de tamp\u00e3o, sua superf\u00edcie de veda\u00e7\u00e3o \u00e9 plana ou c\u00f4nica e os discos se movem linearmente ao longo da linha central do fluido. Para o movimento da haste da v\u00e1lvula, existem tipos de haste de eleva\u00e7\u00e3o (a haste da v\u00e1lvula \u00e9 levantada e abaixada, e o volante n\u00e3o sobe e desce) e tipos de alavanca de eleva\u00e7\u00e3o e rota\u00e7\u00e3o (o volante e a haste da v\u00e1lvula s\u00e3o girados e levantados juntos, e a porca \u00e9 fornecida no corpo da v\u00e1lvula). A v\u00e1lvula globo \u00e9 adequada apenas para abertura total e fechamento total. N\u00e3o \u00e9 permitido ajuste e estrangulamento.<\/p>\n\n\n\n<p>Todas as v\u00e1lvulas globo possuem uma caracter\u00edstica de fluxo inerente que define a rela\u00e7\u00e3o entre a &#039;abertura da v\u00e1lvula&#039; e a vaz\u00e3o sob condi\u00e7\u00f5es de press\u00e3o constante. Observe que &#039;abertura da v\u00e1lvula&#039; neste contexto refere-se \u00e0 posi\u00e7\u00e3o relativa do obturador da v\u00e1lvula em rela\u00e7\u00e3o \u00e0 sua posi\u00e7\u00e3o fechada contra a sede da v\u00e1lvula. N\u00e3o se refere \u00e0 \u00e1rea de passagem do orif\u00edcio. A \u00e1rea de passagem do orif\u00edcio \u00e9 \u00e0s vezes chamada de &#039;garganta da v\u00e1lvula&#039; e \u00e9 o ponto mais estreito entre o obturador da v\u00e1lvula e a sede atrav\u00e9s do qual o fluido passa a qualquer momento. Para qualquer v\u00e1lvula, entretanto, \u00e9 caracterizada pela rela\u00e7\u00e3o entre a vaz\u00e3o e a \u00e1rea de passagem do orif\u00edcio ser sempre diretamente proporcional.<\/p>\n\n\n\n<p>V\u00e1lvulas de qualquer tamanho ou caracter\u00edstica de vaz\u00e3o inerente que s\u00e3o submetidas \u00e0 mesma vaz\u00e3o volum\u00e9trica e press\u00e3o diferencial ter\u00e3o exatamente a mesma \u00e1rea de passagem do orif\u00edcio. Contudo, diferentes caracter\u00edsticas da v\u00e1lvula dar\u00e3o diferentes \u201caberturas de v\u00e1lvula\u201d para a mesma \u00e1rea de passagem. Comparando v\u00e1lvulas lineares e de porcentagem igual, uma v\u00e1lvula linear pode ter uma abertura de v\u00e1lvula 25% para uma determinada queda de press\u00e3o e vaz\u00e3o, enquanto uma v\u00e1lvula de porcentagem igual pode ter uma abertura de v\u00e1lvula 65% exatamente para as mesmas condi\u00e7\u00f5es. As \u00e1reas de passagem do orif\u00edcio ser\u00e3o as mesmas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-1-needle-globe-valve\">1. V\u00e1lvula globo de agulha<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"333\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/9cae1a8afd8a4f3bec7f15a98ba2c2e7.png\" alt=\"\" class=\"wp-image-16487\" title=\"\/uploads\/image\/2020\/02\/28\/9cae1a8afd8a4f3bec7f15a98ba2c2e7.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/9cae1a8afd8a4f3bec7f15a98ba2c2e7.png 450w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/9cae1a8afd8a4f3bec7f15a98ba2c2e7-300x222.png 300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/figure>\n\n\n\n<p>\u00c9 usado para controle preciso do fluxo. O disco da v\u00e1lvula geralmente \u00e9 integrado \u00e0 haste da v\u00e1lvula e possui uma cabe\u00e7a de montagem de agulha que coopera com a sede da v\u00e1lvula com alta precis\u00e3o. Al\u00e9m disso, o passo da rosca da haste da v\u00e1lvula globo tipo agulha \u00e9 menor do que o da v\u00e1lvula comum. Em circunst\u00e2ncias normais, o tamanho do orif\u00edcio da sede da v\u00e1lvula de assento de agulha \u00e9 menor que o tamanho do tubo. Portanto, geralmente \u00e9 limitado a tubula\u00e7\u00f5es com di\u00e2metros nominais pequenos e \u00e9 mais comumente usado para v\u00e1lvulas de amostragem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Caracter\u00edsticas da v\u00e1lvula globo de agulha<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Um design compacto, mas extremamente resistente para servi\u00e7os em alta press\u00e3o e temperatura.<\/li>\n\n\n\n<li>Tipos dispon\u00edveis: Parada, Verifica\u00e7\u00e3o de parada, Agulha e Controle de fluxo.<\/li>\n\n\n\n<li>Dispon\u00edvel com cap\u00f4 aparafusado ou soldado.<\/li>\n\n\n\n<li>Os an\u00e9is de gaxeta s\u00e3o pr\u00e9-comprimidos a 4.000 psi para fornecer uma veda\u00e7\u00e3o de alta integridade.<\/li>\n\n\n\n<li>Acionamento de haste de 2 pe\u00e7as repar\u00e1vel.<\/li>\n\n\n\n<li>Dispon\u00edvel com gaxeta dupla, conex\u00e3o de vazamento e carregamento din\u00e2mico.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Qual a diferen\u00e7a entre a v\u00e1lvula agulha e a v\u00e1lvula globo?<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>BASE DA DIFEREN\u00c7A<\/strong><\/td><td><strong>V\u00c1LVULA DE AGULHA<\/strong><\/td><td><strong>V\u00c1LVULA GLOBAL<\/strong><\/td><\/tr><tr><td>PROP\u00d3SITO<\/td><td>Uma v\u00e1lvula de agulha \u00e9 usada quando \u00e9 necess\u00e1rio estrangulamento cont\u00ednuo para regular o fluxo.<\/td><td>Uma v\u00e1lvula borboleta globo \u00e9 usada quando um fluxo \u00e9 necess\u00e1rio para controle ou estrangulamento de fluxo.<\/td><\/tr><tr><td>FORMA DO PLUGUE<\/td><td>Uma v\u00e1lvula de agulha possui um tamp\u00e3o em forma de agulha.<\/td><td>Uma v\u00e1lvula globo possui um tamp\u00e3o em forma de disco.<\/td><\/tr><tr><td>TAMANHO<\/td><td>O tamanho de uma v\u00e1lvula agulha \u00e9 menor que uma v\u00e1lvula globo.<\/td><td>O tamanho de uma v\u00e1lvula globo \u00e9 mais significativo do que uma v\u00e1lvula agulha.<\/td><\/tr><tr><td>CANDIDATURA<\/td><td>\u00c9 \u00fatil em equipamentos de precis\u00e3o, pois oferece um excelente n\u00edvel de controle de fluxo.<\/td><td>Uma v\u00e1lvula globo acionada por atacado \u00e9 \u00fatil em opera\u00e7\u00f5es que exigem abertura e fechamento frequentes.<\/td><\/tr><tr><td>IND\u00daSTRIAS<\/td><td>\u00c9 usado em linhas de purga de g\u00e1s, instrumentos de campo anal\u00f3gicos, aplica\u00e7\u00f5es de medi\u00e7\u00e3o, sistemas automatizados de controle de combust\u00e3o e reguladores de bombas de press\u00e3o.<\/td><td>\u00c9 usado em resfriamento de \u00e1gua, \u00f3leo combust\u00edvel, drenagem, alimenta\u00e7\u00e3o de produtos qu\u00edmicos, \u00e1gua de alimenta\u00e7\u00e3o, desvio de v\u00e1lvula de controle, petr\u00f3leo e g\u00e1s, refinaria, extra\u00e7\u00e3o de condensador de ar e sistemas de ventila\u00e7\u00e3o de caldeira.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-dc-globe-valve\">2. V\u00e1lvula globo CC<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"368\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/c0618249a2959802b6549313b72aa578.png\" alt=\"\" class=\"wp-image-16488\" title=\"\/uploads\/image\/2020\/02\/28\/c0618249a2959802b6549313b72aa578.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/c0618249a2959802b6549313b72aa578.png 640w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/c0618249a2959802b6549313b72aa578-300x173.png 300w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/c0618249a2959802b6549313b72aa578-600x345.png 600w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p>A haste e o canal da v\u00e1lvula globo tipo DC formam um determinado \u00e2ngulo, e a superf\u00edcie de veda\u00e7\u00e3o da sede da v\u00e1lvula e a passagem de entrada e sa\u00edda tamb\u00e9m possuem um determinado \u00e2ngulo. O corpo da v\u00e1lvula pode ser integrado ou separado. A v\u00e1lvula globo que possui um corpo de v\u00e1lvula separado usa dois corpos de v\u00e1lvula para colocar a sede da v\u00e1lvula no meio para facilitar a manuten\u00e7\u00e3o. Este tipo de v\u00e1lvula de bloqueio permite que o fluido dificilmente mude a dire\u00e7\u00e3o do fluxo e a resist\u00eancia ao fluxo \u00e9 minimizada na v\u00e1lvula globo. A superf\u00edcie de veda\u00e7\u00e3o da sede da v\u00e1lvula e do disco da v\u00e1lvula pode ser soldada com liga dura para tornar toda a v\u00e1lvula mais resistente \u00e0 eros\u00e3o e corros\u00e3o, o que \u00e9 muito adequado para controle de dutos no processo de produ\u00e7\u00e3o de alumina, e tamb\u00e9m \u00e9 adequado para dutos com coque e part\u00edculas s\u00f3lidas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-3-angle-globe-valve\">3. V\u00e1lvula globo angular<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"426\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/ea76c5661d2b773b7b4dc08d910c1602.png\" alt=\"\" class=\"wp-image-16489\" title=\"\/uploads\/image\/2020\/02\/28\/ea76c5661d2b773b7b4dc08d910c1602.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/ea76c5661d2b773b7b4dc08d910c1602.png 640w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/ea76c5661d2b773b7b4dc08d910c1602-300x200.png 300w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/ea76c5661d2b773b7b4dc08d910c1602-600x399.png 600w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p>A maior vantagem da v\u00e1lvula globo angular \u00e9 que a v\u00e1lvula pode ser instalada no canto da tubula\u00e7\u00e3o, o que \u00e9 f\u00e1cil de operar e n\u00e3o \u00e9 necess\u00e1rio o uso de cotovelo de 90 \u00b0. Portanto, este tipo de v\u00e1lvula \u00e9 mais adequada para ser utilizada em sistemas de produ\u00e7\u00e3o de am\u00f4nia sint\u00e9tica e sistemas de refrigera\u00e7\u00e3o em f\u00e1bricas de fertilizantes. Por exemplo, J44H-160, J44H-320, L44H-160 e L44H-320 s\u00e3o totalmente projetados para sistemas de produ\u00e7\u00e3o de am\u00f4nia sint\u00e9tica.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Classifica\u00e7\u00e3o da v\u00e1lvula globo angular<\/h3>\n\n\n\n<p>Estas v\u00e1lvulas podem ser classificadas dependendo de v\u00e1rios par\u00e2metros:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Projeto do disco da v\u00e1lvula: disco convencional ou esf\u00e9rico, disco de composi\u00e7\u00e3o e disco tipo plug.<\/li>\n\n\n\n<li>Configura\u00e7\u00f5es disco-haste da v\u00e1lvula: Haste girat\u00f3ria com disco integral ou n\u00e3o integral e haste n\u00e3o girat\u00f3ria com disco integral ou disco n\u00e3o integral.<\/li>\n\n\n\n<li>Parafuso da haste da v\u00e1lvula: Parafuso da haste interna e externa.<\/li>\n\n\n\n<li>Projeto do castelo da v\u00e1lvula: castelo aparafusado, castelo soldado, castelo flangeado, castelo com anel de uni\u00e3o e castelo com veda\u00e7\u00e3o de press\u00e3o<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Como funciona uma v\u00e1lvula globo angular?<\/h3>\n\n\n\n<p>As se\u00e7\u00f5es de abertura e fechamento da v\u00e1lvula globo angular s\u00e3o discos de v\u00e1lvula em forma de tamp\u00e3o, a superf\u00edcie de veda\u00e7\u00e3o \u00e9 lisa ou c\u00f4nica e a aba se move linearmente ao longo da linha central do fluido. Os canais de entrada e sa\u00edda de uma v\u00e1lvula globo angular, tamb\u00e9m conhecida como v\u00e1lvula angular, n\u00e3o est\u00e3o na mesma dire\u00e7\u00e3o, criando um \u00e2ngulo reto de 90\u00b0. Esta forma de v\u00e1lvula globo permite que o meio que flui atrav\u00e9s dela mude seu caminho de fluxo, resultando em uma queda de press\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-4-steel-ball-or-porcelain-ball-sealed-globe-valve\">4. V\u00e1lvula globo selada com esfera de a\u00e7o ou porcelana<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"388\" height=\"414\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/0dcecd11c9760c1981b7f15564ff26a5.png\" alt=\"\" class=\"wp-image-16490\" title=\"\/uploads\/image\/2020\/02\/28\/0dcecd11c9760c1981b7f15564ff26a5.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/0dcecd11c9760c1981b7f15564ff26a5.png 388w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/0dcecd11c9760c1981b7f15564ff26a5-281x300.png 281w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/><\/figure>\n\n\n\n<p>A caracter\u00edstica estrutural da v\u00e1lvula \u00e9 que o corpo da v\u00e1lvula \u00e9 dividido em tipo de pe\u00e7a \u00fanica e tipo dividido. O disco da v\u00e1lvula \u00e9 uma esfera de a\u00e7o de liga dura STL ou uma esfera de cer\u00e2mica feita de material amorfo por forma\u00e7\u00e3o de p\u00f3, sinteriza\u00e7\u00e3o em alta temperatura e desenvolvimento fino. A esfera envolvente rolante na extremidade inferior da haste da v\u00e1lvula est\u00e1 dentro do orif\u00edcio da v\u00e1lvula. Quando a esfera \u00e9 girada tridimensionalmente no orif\u00edcio esf\u00e9rico da haste da v\u00e1lvula, in\u00fameras linhas de veda\u00e7\u00e3o podem ser geradas, o que aumenta a vida \u00fatil da superf\u00edcie de veda\u00e7\u00e3o e tamb\u00e9m pode garantir uma veda\u00e7\u00e3o confi\u00e1vel.<\/p>\n\n\n\n<p>Devido \u00e0 limita\u00e7\u00e3o da veda\u00e7\u00e3o esf\u00e9rica, esta v\u00e1lvula \u00e9 geralmente usada para passagens nominais menores, cerca de 6-25 mm. A v\u00e1lvula \u00e9 adequada para tubula\u00e7\u00f5es de vapor de alta temperatura e alta press\u00e3o em usinas nucleares e usinas termel\u00e9tricas, tubula\u00e7\u00f5es de instrumenta\u00e7\u00e3o para sistemas de amostragem e esgoto e tubula\u00e7\u00f5es resistentes \u00e0 temperatura, \u00e0 press\u00e3o, ao desgaste e \u00e0 corros\u00e3o na ind\u00fastria petroqu\u00edmica. e sistemas qu\u00edmicos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-5-high-temperature-and-high-pressure-power-station-globe-valve\">5. V\u00e1lvula globo de esta\u00e7\u00e3o de energia de alta temperatura e alta press\u00e3o<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"587\" height=\"304\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/371aa3ca1c14f373dc8b7377ad2aa65d.png\" alt=\"\" class=\"wp-image-16491\" title=\"\/uploads\/image\/2020\/02\/28\/371aa3ca1c14f373dc8b7377ad2aa65d.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/371aa3ca1c14f373dc8b7377ad2aa65d.png 587w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/371aa3ca1c14f373dc8b7377ad2aa65d-300x155.png 300w\" sizes=\"auto, (max-width: 587px) 100vw, 587px\" \/><\/figure>\n\n\n\n<p>A caracter\u00edstica estrutural da v\u00e1lvula \u00e9 que a conex\u00e3o entre o corpo da v\u00e1lvula e a tampa da v\u00e1lvula adota um tipo de veda\u00e7\u00e3o auto-estanque \u00e0 press\u00e3o ou um tipo de bra\u00e7adeira. A forma de conex\u00e3o do corpo da v\u00e1lvula e da tubula\u00e7\u00e3o \u00e9 uma conex\u00e3o de soldagem de topo. O material do corpo da v\u00e1lvula \u00e9 principalmente a\u00e7o cromo molibd\u00eanio ou a\u00e7o cromo molibd\u00eanio van\u00e1dio, e a superf\u00edcie de veda\u00e7\u00e3o \u00e9 principalmente soldada com liga dura.<\/p>\n\n\n\n<p>Portanto, este tipo de v\u00e1lvula \u00e9 resistente a altas temperaturas e press\u00f5es com boa resist\u00eancia ao calor; a superf\u00edcie de veda\u00e7\u00e3o \u00e9 resistente ao desgaste, abras\u00e3o e corros\u00e3o e possui bom desempenho de veda\u00e7\u00e3o e longa vida \u00fatil. \u00c9 mais adequado para tubula\u00e7\u00f5es de vapor superaquecido e de alta temperatura e alta press\u00e3o em sistemas da ind\u00fastria de energia t\u00e9rmica, sistemas petroqu\u00edmicos e metalurgia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-6-fluorine-lined-globe-valve\">6. V\u00e1lvula globo revestida com fl\u00faor<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"514\" height=\"320\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/7bfef87287b9c1ff8919957edd0fc299.png\" alt=\"\" class=\"wp-image-16492\" title=\"\/uploads\/image\/2020\/02\/28\/7bfef87287b9c1ff8919957edd0fc299.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/7bfef87287b9c1ff8919957edd0fc299.png 514w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/7bfef87287b9c1ff8919957edd0fc299-300x187.png 300w\" sizes=\"auto, (max-width: 514px) 100vw, 514px\" \/><\/figure>\n\n\n\n<p>O membro de abertura e fechamento da v\u00e1lvula globo revestida de fl\u00faor \u00e9 um disco em forma de tamp\u00e3o. A superf\u00edcie de veda\u00e7\u00e3o \u00e9 plana ou c\u00f4nica e a aba da v\u00e1lvula se move linearmente ao longo da linha central do fluido. Para a forma de movimento da haste da v\u00e1lvula, existem o tipo de haste de eleva\u00e7\u00e3o (a haste da v\u00e1lvula \u00e9 levantada e abaixada, e o volante n\u00e3o sobe e desce) e o tipo de haste rotativa de eleva\u00e7\u00e3o (o volante e a haste da v\u00e1lvula s\u00e3o girados e levantado juntos e a porca \u00e9 fornecida no corpo da v\u00e1lvula).<\/p>\n\n\n\n<p>A v\u00e1lvula globo \u00e9 adequada apenas para abertura total e fechamento total. N\u00e3o \u00e9 permitido us\u00e1-lo para ajuste e estrangulamento. As v\u00e1lvulas de corte revestidas com fl\u00faor s\u00e3o adequadas para \u00e1gua r\u00e9gia, \u00e1cido sulf\u00farico, \u00e1cido clor\u00eddrico, \u00e1cido fluor\u00eddrico e v\u00e1rios \u00e1cidos org\u00e2nicos, \u00e1cidos fortes e oxidantes fortes a -50 a 150 \u00b0 C. Tamb\u00e9m s\u00e3o adequadas para v\u00e1rias concentra\u00e7\u00f5es de \u00e1lcalis org\u00e2nicos fortes solventes e outros gasodutos corrosivos e de meio l\u00edquido.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-7-insulation-globe-valve\">7. V\u00e1lvula globo de isolamento<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"374\" height=\"312\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/cdd4010c106179aeed4d77d29da61ea4.png\" alt=\"\" class=\"wp-image-16493\" title=\"\/uploads\/image\/2020\/02\/28\/cdd4010c106179aeed4d77d29da61ea4.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/cdd4010c106179aeed4d77d29da61ea4.png 374w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/cdd4010c106179aeed4d77d29da61ea4-300x250.png 300w\" sizes=\"auto, (max-width: 374px) 100vw, 374px\" \/><\/figure>\n\n\n\n<p>A pe\u00e7a de abertura e fechamento da v\u00e1lvula glo de isolamento \u00e9 um disco em forma de tamp\u00e3o. A superf\u00edcie de veda\u00e7\u00e3o \u00e9 plana ou c\u00f4nica e a aba da v\u00e1lvula se move linearmente ao longo da linha central do fluido. Para a forma de movimento da haste da v\u00e1lvula, existem o tipo de haste de eleva\u00e7\u00e3o (a haste da v\u00e1lvula \u00e9 levantada e abaixada, e o volante n\u00e3o sobe e desce) e o tipo de haste rotativa de eleva\u00e7\u00e3o (o volante e a haste da v\u00e1lvula s\u00e3o girados e levantado juntos e a porca \u00e9 fornecida no corpo da v\u00e1lvula).<\/p>\n\n\n\n<p>A v\u00e1lvula globo corrugada \u00e9 adequada apenas para abertura total e fechamento total e n\u00e3o pode ser usada para ajuste e estrangulamento. A v\u00e1lvula globo de isolamento \u00e9 usada principalmente em sistemas de petr\u00f3leo, qu\u00edmica, metalurgia, farmac\u00eautica e outros para transportar meios de alta viscosidade que solidificar\u00e3o \u00e0 temperatura ambiente. A jaqueta de isolamento da v\u00e1lvula globo de isolamento com jaqueta DC \u00e9 soldada entre os dois flanges da v\u00e1lvula, e duas portas de conex\u00e3o da jaqueta de isolamento s\u00e3o fornecidas na lateral e na parte inferior da v\u00e1lvula. A v\u00e1lvula globo de isolamento DC \u00e9 particularmente adequada para tubula\u00e7\u00f5es nas ind\u00fastrias qu\u00edmica e de fertilizantes. O vapor contido na camisa pode impedir a cristaliza\u00e7\u00e3o do meio. As v\u00e1lvulas globo isoladas s\u00e3o amplamente utilizadas em v\u00e1rios sistemas, como petr\u00f3leo, produtos qu\u00edmicos, metalurgia e produtos farmac\u00eauticos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-8-electric-flange-globe-valve\">8. V\u00e1lvula globo de flange el\u00e9trica<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"492\" height=\"272\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/c7b3c24085b695a86b649de3a16ffa64.png\" alt=\"\" class=\"wp-image-16494\" title=\"\/uploads\/image\/2020\/02\/28\/c7b3c24085b695a86b649de3a16ffa64.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/c7b3c24085b695a86b649de3a16ffa64.png 492w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/c7b3c24085b695a86b649de3a16ffa64-300x166.png 300w\" sizes=\"auto, (max-width: 492px) 100vw, 492px\" \/><\/figure>\n\n\n\n<p>El\u00e9trico&nbsp;<a href=\"https:\/\/zecovalve.com\/pt\/products\/flange-globe-valve.html\/\">v\u00e1lvula de globo de flange<\/a>&nbsp;e a v\u00e1lvula gaveta flangeada \u00e9 o mesmo tipo de v\u00e1lvula. Consiste em atuador el\u00e9trico ou atuador pneum\u00e1tico e v\u00e1lvula de corte. A diferen\u00e7a \u00e9 que a parte de fechamento da v\u00e1lvula globo com flange el\u00e9trica \u00e9 um corpo de v\u00e1lvula. O corpo da v\u00e1lvula \u00e9 girado em torno de sua linha central para abrir e fechar a v\u00e1lvula.<\/p>\n\n\n\n<p>A v\u00e1lvula gaveta \u00e9 usada principalmente para cortar, distribuir e alterar a dire\u00e7\u00e3o do fluxo do meio na tubula\u00e7\u00e3o. Possui uma ampla gama de aplica\u00e7\u00f5es, desde v\u00e1rios mil\u00edmetros at\u00e9 grandes metros, podendo ser aplicado desde alto v\u00e1cuo at\u00e9 alta press\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-9-api-stop-valve\">9. V\u00e1lvula de bloqueio API<\/h2>\n\n\n\n<p>Esse tipo de&nbsp;<a href=\"https:\/\/zecovalve.com\/pt\/products\/globe-valve-check-valve\/\">v\u00e1lvula de globo<\/a>&nbsp;foi projetado em estrita conformidade com a norma ASMEB16.34; a conex\u00e3o entre o corpo da v\u00e1lvula e o castelo, a caixa de empanque, a instala\u00e7\u00e3o da porca da haste e a veda\u00e7\u00e3o superior s\u00e3o todos projetados em estrita conformidade com API600. O material da v\u00e1lvula atende totalmente aos requisitos da API600. Seu comprimento estrutural est\u00e1 em conformidade com ASMEB16.10; as dimens\u00f5es da conex\u00e3o do flange est\u00e3o em conformidade com ANSI \/ ASMEB16.5a. A inspe\u00e7\u00e3o e teste da v\u00e1lvula s\u00e3o realizados estritamente de acordo com API598. Portanto, a v\u00e1lvula \u00e9 amplamente utilizada em dutos petroqu\u00edmicos e tamb\u00e9m \u00e9 adequada para uso em sistemas de energia, metalurgia, t\u00eaxteis e outros.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-10-stop-valve-for-oxygen-pipeline\">10. V\u00e1lvula de parada para tubula\u00e7\u00e3o de oxig\u00eanio<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"607\" height=\"278\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/e2e230a3a0039005422db03a48f1959c.png\" alt=\"\" class=\"wp-image-16495\" title=\"\/uploads\/image\/2020\/02\/28\/e2e230a3a0039005422db03a48f1959c.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/e2e230a3a0039005422db03a48f1959c.png 607w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/e2e230a3a0039005422db03a48f1959c-300x137.png 300w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/e2e230a3a0039005422db03a48f1959c-600x275.png 600w\" sizes=\"auto, (max-width: 607px) 100vw, 607px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-11-petroleum-liquefied-gas-stop-valve\">11. V\u00e1lvula de corte de g\u00e1s liquefeito de petr\u00f3leo<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"426\" height=\"309\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/12fb4753a665cdf393c52e20cb1ffdad.png\" alt=\"\" class=\"wp-image-16496\" title=\"\/uploads\/image\/2020\/02\/28\/12fb4753a665cdf393c52e20cb1ffdad.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/12fb4753a665cdf393c52e20cb1ffdad.png 426w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/12fb4753a665cdf393c52e20cb1ffdad-300x218.png 300w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><\/figure>\n\n\n\n<p>Esta v\u00e1lvula \u00e9 especialmente projetada para tubula\u00e7\u00f5es ou dispositivos de g\u00e1s liquefeito de petr\u00f3leo, com foco nos requisitos de prote\u00e7\u00e3o contra inc\u00eandio na estrutura. A gaxeta \u00e9 feita de politetrafluoretileno, que possui veda\u00e7\u00e3o confi\u00e1vel e nunca vaza. O submaterial de veda\u00e7\u00e3o \u00e9 feito de politetrafluoroetileno ou n\u00e1ilon no corpo da v\u00e1lvula, que \u00e9 macio e confi\u00e1vel. Esta v\u00e1lvula \u00e9 adequada para o sistema de gasodutos de petr\u00f3leo liquefeito como dispositivo de abertura e fechamento, e tamb\u00e9m adequada para outros gasodutos com temperatura \u226480 \u00b0 C.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-12-upper-threaded-stem-globe-valve\">12. V\u00e1lvula globo com haste roscada superior<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"426\" height=\"309\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b271abb28f9b7e58f35c728a5e6c580a.png\" alt=\"\" class=\"wp-image-16497\" title=\"\/uploads\/image\/2020\/02\/28\/b271abb28f9b7e58f35c728a5e6c580a.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b271abb28f9b7e58f35c728a5e6c580a.png 426w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b271abb28f9b7e58f35c728a5e6c580a-300x218.png 300w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><\/figure>\n\n\n\n<p>V\u00e1lvula globo com haste roscada superior: a rosca da haste da v\u00e1lvula globo fica fora do corpo da v\u00e1lvula. A vantagem \u00e9 que a haste da v\u00e1lvula n\u00e3o \u00e9 afetada pelo meio e \u00e9 f\u00e1cil de lubrificar. Esse tipo de estrutura \u00e9 comumente usado.<\/p>\n\n\n\n<p>A haste deste tipo de v\u00e1lvula de bloqueio n\u00e3o entra em contato direto com o meio de trabalho. \u00c9 adequado para diferentes condi\u00e7\u00f5es de trabalho de acordo com os diferentes materiais da carca\u00e7a, o material do par de veda\u00e7\u00e3o, o material da gaxeta e o material da haste da v\u00e1lvula. Se o material do corpo da v\u00e1lvula e da tampa da v\u00e1lvula for a\u00e7o carbono, o submaterial de veda\u00e7\u00e3o for a\u00e7o-liga, o enchimento for grafite flex\u00edvel e o material da haste da v\u00e1lvula for a\u00e7o inoxid\u00e1vel da s\u00e9rie Cr13, que \u00e9 adequado para \u00e1gua, vapor e oleodutos. Se o corpo da v\u00e1lvula e o material da tampa forem 1Cr18Ni9 ou 0Cr18Ni9, o submaterial de veda\u00e7\u00e3o \u00e9 o material do corpo da v\u00e1lvula ou liga dura, o enchimento \u00e9 politetrafluoroetileno e o material da haste da v\u00e1lvula \u00e9 Cr17Ni2, que \u00e9 adequado para tubula\u00e7\u00f5es de meio corrosivo e dispositivos baseados em \u00e1cido n\u00edtrico. No entanto, o di\u00e2metro nominal m\u00e1ximo deste tipo de v\u00e1lvula de corte \u00e9 de 200 mm, e uma v\u00e1lvula de desvio ou uma estrutura de desvio interna deve ser fornecida na v\u00e1lvula de corte acima de 200. Geralmente, a extremidade de entrada de uma v\u00e1lvula globo DN \u2265200 mm est\u00e1 acima do disco de v\u00e1lvula, ou seja, entrada alta e sa\u00edda baixa. Isso evita que haja grande esfor\u00e7o ao fech\u00e1-lo e uma haste grossa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-13-lower-threaded-stem-globe-valve\">13. V\u00e1lvula globo com haste roscada inferior<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"464\" height=\"270\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/361717af4fab04f7d47d8c21a6184f8a.png\" alt=\"\" class=\"wp-image-16498\" title=\"\/uploads\/image\/2020\/02\/28\/361717af4fab04f7d47d8c21a6184f8a.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/361717af4fab04f7d47d8c21a6184f8a.png 464w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/361717af4fab04f7d47d8c21a6184f8a-300x175.png 300w\" sizes=\"auto, (max-width: 464px) 100vw, 464px\" \/><\/figure>\n\n\n\n<p>V\u00e1lvula globo com haste roscada inferior: a rosca da haste da v\u00e1lvula globo est\u00e1 no corpo da v\u00e1lvula. Esta estrutura da rosca da haste da v\u00e1lvula entra em contato direto com o meio, \u00e9 suscet\u00edvel \u00e0 eros\u00e3o e n\u00e3o pode ser lubrificada. Essa estrutura \u00e9 utilizada em locais de pequeno di\u00e2metro e baixa temperatura.<\/p>\n\n\n\n<p>A rosca da haste deste tipo de v\u00e1lvula globo est\u00e1 em contato direto com o meio de trabalho e \u00e9 corro\u00edda diretamente pelo meio, o que torna a rosca da haste suscet\u00edvel \u00e0 ferrugem e causa abertura e fechamento trabalhosos. A v\u00e1lvula globo nesta estrutura tem uma passagem nominal relativamente pequena, geralmente entre 6 e 50 mm, e \u00e9 usada principalmente para v\u00e1lvulas de instrumentos e v\u00e1lvulas de amostragem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-14-api602-forged-steel-globe-valve\">14. V\u00e1lvula globo de a\u00e7o forjado API602<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"535\" height=\"309\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/2878ae0ad323b13b13dcf8cf6862d70b.png\" alt=\"\" class=\"wp-image-16499\" title=\"\/uploads\/image\/2020\/02\/28\/2878ae0ad323b13b13dcf8cf6862d70b.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/2878ae0ad323b13b13dcf8cf6862d70b.png 535w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/2878ae0ad323b13b13dcf8cf6862d70b-300x173.png 300w\" sizes=\"auto, (max-width: 535px) 100vw, 535px\" \/><\/figure>\n\n\n\n<p>Este tipo de v\u00e1lvula globo \u00e9 projetado de acordo com o padr\u00e3o API602 do American Petroleum Institute. O corpo e o cap\u00f4 s\u00e3o forjados em a\u00e7o carbono ou a\u00e7o inoxid\u00e1vel. O corpo da v\u00e1lvula e a tampa s\u00e3o conectados com uma conex\u00e3o aparafusada, uma conex\u00e3o aparafusada e soldagem, e s\u00e3o divididos em uma haste roscada superior e uma haste roscada inferior. O submaterial de veda\u00e7\u00e3o \u00e9 a\u00e7o Cr13, a\u00e7o \u00e1cido inoxid\u00e1vel para liga dura STL. O enchimento \u00e9 grafite flex\u00edvel ou politetrafluoroetileno. Os m\u00e9todos de conex\u00e3o incluem flange, rosca, soldagem de soquete e soldagem de topo. O n\u00edvel de press\u00e3o \u00e9 CL150 \uff5e CL1500 e a passagem nominal \u00e9 1\/4 \uff5e 2 pol.<\/p>\n\n\n\n<p>Este tipo de v\u00e1lvula globo \u00e9 amplamente utilizado em equipamentos e tubula\u00e7\u00f5es de departamentos petroqu\u00edmicos, de energia, qu\u00edmicos e outros. O meio de trabalho \u00e9 vapor, \u00f3leo e meios corrosivos. O comprimento da estrutura est\u00e1 de acordo com ASMEB16.10, o tamanho da conex\u00e3o do flange est\u00e1 de acordo com ASME \/ ANSIB16.5a, o tamanho da extremidade de soldagem est\u00e1 de acordo com ASMEB16.25, o tamanho do furo de soldagem do soquete est\u00e1 de acordo com ANSIB16.11, e o o tamanho da extremidade da conex\u00e3o roscada est\u00e1 de acordo com ANSIB1.20.1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-15-plunger-globe-valve\">15. V\u00e1lvula globo de \u00eambolo<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"415\" height=\"297\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b58635caf21feef42e1649d02a2013d9.png\" alt=\"\" class=\"wp-image-16500\" title=\"\/uploads\/image\/2020\/02\/28\/b58635caf21feef42e1649d02a2013d9.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b58635caf21feef42e1649d02a2013d9.png 415w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b58635caf21feef42e1649d02a2013d9-300x215.png 300w\" sizes=\"auto, (max-width: 415px) 100vw, 415px\" \/><\/figure>\n\n\n\n<p>Este tipo de v\u00e1lvula de \u00eambolo \u00e9 uma veda\u00e7\u00e3o radial, que \u00e9 realizada por dois an\u00e9is de veda\u00e7\u00e3o el\u00e1sticos revestidos no \u00eambolo polido. Os dois an\u00e9is de veda\u00e7\u00e3o el\u00e1sticos s\u00e3o separados por um colar, e o anel de veda\u00e7\u00e3o el\u00e1stico ao redor do \u00eambolo \u00e9 pressionado firmemente pela carga aplicada \u00e0 tampa da v\u00e1lvula pelo corpo da v\u00e1lvula e pelos parafusos de conex\u00e3o da tampa da v\u00e1lvula para garantir a veda\u00e7\u00e3o. O material da v\u00e1lvula \u00e9 composto de a\u00e7o carbono para o alojamento e a\u00e7o inoxid\u00e1vel Cr13 para o \u00eambolo. Grafite flex\u00edvel para anel de veda\u00e7\u00e3o pode ser usado em oleodutos de \u00e1gua, vapor e \u00f3leo. Se o inv\u00f3lucro for feito de a\u00e7o inoxid\u00e1vel resistente a \u00e1cidos, o \u00eambolo ser\u00e1 feito de a\u00e7o inoxid\u00e1vel resistente a \u00e1cidos e o anel de veda\u00e7\u00e3o ser\u00e1 feito de politetrafluoroetileno, que \u00e9 adequado para meios corrosivos \u00e1cidos e alcalinos.<\/p>\n\n\n\n<p>A v\u00e1lvula tem as vantagens de veda\u00e7\u00e3o confi\u00e1vel, longa vida \u00fatil e f\u00e1cil manuten\u00e7\u00e3o; a desvantagem \u00e9 a lenta velocidade de abertura e fechamento. Este tipo de v\u00e1lvula \u00e9 amplamente utilizado em sistemas de constru\u00e7\u00e3o urbana, tubula\u00e7\u00f5es de \u00e1gua e vapor em sistemas de aquecimento urbano.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-16-bellows-globe-valve\">16. V\u00e1lvula globo de fole<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"505\" height=\"285\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/0b844058a1d1e4b92c9c6e971df4f82e.png\" alt=\"\" class=\"wp-image-16501\" title=\"\/uploads\/image\/2020\/02\/28\/0b844058a1d1e4b92c9c6e971df4f82e.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/0b844058a1d1e4b92c9c6e971df4f82e.png 505w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/0b844058a1d1e4b92c9c6e971df4f82e-300x169.png 300w\" sizes=\"auto, (max-width: 505px) 100vw, 505px\" \/><\/figure>\n\n\n\n<p>A v\u00e1lvula globo de fole tamb\u00e9m \u00e9 chamada de v\u00e1lvula globo selada por fole. Atrav\u00e9s da soldagem autom\u00e1tica por rolo, uma barreira met\u00e1lica \u00e9 formada entre o meio fluido e a atmosfera para garantir um projeto de vazamento zero da haste da v\u00e1lvula. A v\u00e1lvula globo de fole usa uma estrutura de fole interna, e a extremidade inferior do fole de a\u00e7o inoxid\u00e1vel \u00e9 soldada \u00e0 haste da v\u00e1lvula para evitar que o fluido do processo corroa a haste da v\u00e1lvula. A outra extremidade \u00e9 colocada entre o corpo da v\u00e1lvula e a tampa da v\u00e1lvula para formar uma veda\u00e7\u00e3o est\u00e1tica. Para projeto de veda\u00e7\u00e3o dupla, se o fole falhar, a gaxeta da haste da v\u00e1lvula tamb\u00e9m evitar\u00e1 vazamentos. A soldagem do tubo corrugado e a haste da v\u00e1lvula mant\u00eam um desempenho de funcionamento est\u00e1vel para evitar a vibra\u00e7\u00e3o da haste da v\u00e1lvula causada pela vibra\u00e7\u00e3o do obturador da v\u00e1lvula. \u00c9 mais adequado para tubula\u00e7\u00f5es de vapor, inflam\u00e1veis, explosivos, \u00f3leo t\u00e9rmico, alta pureza, t\u00f3xicos e outros meios.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-17-direct-globe-valve\">17. V\u00e1lvula globo direta<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"357\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b01d23769a3a172a9bfb20e6140e3f4d.png\" alt=\"\" class=\"wp-image-16502\" title=\"\/uploads\/image\/2020\/02\/28\/b01d23769a3a172a9bfb20e6140e3f4d.png\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b01d23769a3a172a9bfb20e6140e3f4d.png 640w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b01d23769a3a172a9bfb20e6140e3f4d-300x167.png 300w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/b01d23769a3a172a9bfb20e6140e3f4d-600x335.png 600w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p>Os canais de entrada e sa\u00edda do meio da v\u00e1lvula de corte reta est\u00e3o na mesma dire\u00e7\u00e3o a 180\u00b0. Este tipo de v\u00e1lvula globo apresenta danos relativamente pequenos no estado do fluxo, de modo que a perda de press\u00e3o atrav\u00e9s da v\u00e1lvula \u00e9 correspondentemente reduzida. Baseia-se na press\u00e3o da haste da v\u00e1lvula para combinar firmemente a superf\u00edcie de veda\u00e7\u00e3o do disco da v\u00e1lvula com a superf\u00edcie de veda\u00e7\u00e3o da sede da v\u00e1lvula para evitar que o meio flua. Durante o processo de abertura e fechamento, o atrito entre as superf\u00edcies de veda\u00e7\u00e3o \u00e9 pequeno, resistente ao desgaste, a altura de abertura \u00e9 pequena e o desempenho do processo de fabrica\u00e7\u00e3o \u00e9 bom. Em compara\u00e7\u00e3o com as v\u00e1lvulas gaveta, as v\u00e1lvulas globo t\u00eam uma estrutura mais simples e s\u00e3o mais convenientes para serem fabricadas e mantidas. \u00c9 a v\u00e1lvula mais utilizada no setor industrial.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">Etiquetas relacionadas :<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/\">V\u00e1lvula ZECO<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/china-gate-valves-suppliersnon-rising-stem-gate-valvesks-gate-valves.html\/\">O que \u00e9 uma v\u00e1lvula de gaveta?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/tag\/shanghai-pressure-reducing-valve-factory\/\">F\u00e1brica de v\u00e1lvulas redutoras de press\u00e3o de Xangai<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/difference-between-gate-valves-and-ball-valves.html\/\">V\u00e1lvula de gaveta vs V\u00e1lvula de esfera<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/what-is-an-axial-flow-silent-check-valve.html\/\">O que \u00e9 uma v\u00e1lvula de reten\u00e7\u00e3o axial<\/a>\n\n<\/div>\n\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/difference-between-gate-valve-and-butterfly-valve.html\/\">Diferen\u00e7a entre a v\u00e1lvula de gaveta e a v\u00e1lvula de borboleta<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/advantages-and-disadvantages-of-globe-valves.html\/\">O que \u00e9 uma v\u00e1lvula de globo?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/the-function-of-globe-valve-in-pipeline-system.html\/\">O que s\u00e3o v\u00e1lvulas globo?<\/a>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Caracter\u00edsticas do Fluxo da V\u00e1lvula de Globo As partes de abertura e fecho da v\u00e1lvula de paragem (v\u00e1lvula de globo) s\u00e3o discos em forma de obturador, a sua superf\u00edcie de veda\u00e7\u00e3o ... <a title=\"Caracter\u00edsticas e sele\u00e7\u00e3o de 17 tipos de v\u00e1lvulas de globo\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/pt\/characteristics-and-selection-of-17-kinds-of-globe-valves.html\" aria-label=\"Mais em Caracter\u00edsticas e Sele\u00e7\u00e3o de 17 Tipos de V\u00e1lvulas Globo\">Ler mais<\/a><\/p>","protected":false},"author":2,"featured_media":20799,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1929],"tags":[1970,2283,2284,2285,2281,3965,3671,3966,1806,2280,2282],"class_list":["post-16486","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-globe-valve","tag-china-angle-valve","tag-bellows-globe-valve","tag-direct-globe-valve","tag-flange-globe-valve","tag-forged-steel-globe-valve","tag-globe-valve-characteristics","tag-globe-valve-flow-direction","tag-globe-valve-internal","tag-globe-valves","tag-needle-globe-valve","tag-plunger-globe-valve","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/07\/DIN-Globe-Valve-2-1024x735.jpg",1024,735,true],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/pt\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":1929,"name":"Globe Valve","slug":"globe-valve","term_group":0,"term_taxonomy_id":1929,"taxonomy":"category","description":"","parent":0,"count":21,"filter":"raw","cat_ID":1929,"category_count":21,"category_description":"","cat_name":"Globe Valve","category_nicename":"globe-valve","category_parent":0}],"tag_info":[{"term_id":1970,"name":"Angle Globe Valve","slug":"china-angle-valve","term_group":0,"term_taxonomy_id":1970,"taxonomy":"post_tag","description":"<!-- wp:heading -->\r\n<h2 id=\"h-what-is-a-angle-globe-valve\">What is a Angle Globe Valve?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>The angle globe valve is a modification of the basic standard pattern globe valve where the ends are at an angle of 90 degrees. The Red Point\u00ae angle globe valves have a streamlined curved bore to create optimal flow and lower CV value. They are used in applications that have periods of pulsating flow because of their capability to handle the slugging effect of this type of flow. To avoid accumulation and crystallization of the medium, packing flushing and heating steam jackets can be added to the valve design.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"https:\/\/zecovalve.com\/contact\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET ANGLE GLOBE VALVE PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2>How does an Angle Globe Valve work?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>The angle globe valve\u2019s opening and closing sections are plug-shaped valve discs, the sealing surface is smooth or conical, and the flap travels linearly down the fluid\u2019s centerline. The inlet and outlet channels of an angle globe valve, also known as an angle valve, are not in the same direction, creating a 90\u00b0 right angle. This form of globe valve allows the medium flowing through it to change its flow path, resulting in a pressure drop.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Applications of Angle Globe Valve<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>Angle globe valves can be used in pipelines for gasoline, mineral, pharmaceutical, fertilizer, electric power, recycling machinery, gas supply, cooling and freezing systems, boiler steam systems, hot oil systems, and other industries. It can be used to break off or link the pipeline medium in various working conditions, from nominal pressures of 150LB to 2500LB and working temperatures of -40 to 500\u00b0C.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:list -->\r\n<ul><li>They are suitable for pipelines that do not have strict requirements for fluid resistance, i.e., pressure loss.<\/li><li>These valves come in a practical size limit of NPS 12 (DN 300). Valves larger than NPS 12 (DN 300) are rarely used. However, sizes up to NPS 48 (DN 1200) have been manufactured and used.<\/li><li>The pressure difference across the valve disc must not exceed 20 percent of the maximum upstream pressure or 200 psi (1380 kPa), whichever is less.<\/li><li>These valves can be considered for the equipment or pipelines with flow medium at high temperature and high pressure, and pipelines with steam mediums and DN&lt;200mm.<\/li><li>These valves are generally installed for low-temperature and low-pressure applications so that pressure is under the disk.<\/li><li>For high-temperature and high-pressure applications, like steam, valves are installed so that pressure is above the disk.<\/li><li>These valves can be used for small applications as valves for instruments, sampling, pressure gauges, etc.<\/li><li>For highly toxic mediums, valves with bellow seals should be used.<\/li><\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Advantages of Globe Angle Valves<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul><li>The Angle pattern globe valve is a modified version of the \u201cT\u201d-Pattern Globe valve with an inlet and outlet at right angles.<\/li><li>When fitted at a change in piping direction, this valve eliminates a bend and has the advantage of a smaller pressure drop than a conventional \u201cT\u201d pattern globe valve.<\/li><li>Angle valves have the same features of the stem, disc, and seat ring design as the globe valve.<\/li><li>The fundamental difference between the two is that the fluid flow through the angle valve makes a 90\u00b0 turn.<\/li><li>These valves offer less resistance to flow than a globe valve with an elbow which it would replace.<\/li><li>An angle valve reduces the number of joints in a line, in addition to saving installation time.<\/li><li>They are also used in applications that have periods of pulsating flow because of their capability to handle the slugging effect of this type of flow.<\/li><\/ul>\r\n<!-- \/wp:list -->","parent":0,"count":2,"filter":"raw"},{"term_id":2283,"name":"bellows globe valve","slug":"bellows-globe-valve","term_group":0,"term_taxonomy_id":2283,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2284,"name":"direct globe valve","slug":"direct-globe-valve","term_group":0,"term_taxonomy_id":2284,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2285,"name":"flange globe valve","slug":"flange-globe-valve","term_group":0,"term_taxonomy_id":2285,"taxonomy":"post_tag","description":"","parent":0,"count":4,"filter":"raw"},{"term_id":2281,"name":"forged steel globe valve","slug":"forged-steel-globe-valve","term_group":0,"term_taxonomy_id":2281,"taxonomy":"post_tag","description":"","parent":0,"count":4,"filter":"raw"},{"term_id":3965,"name":"globe valve characteristics","slug":"globe-valve-characteristics","term_group":0,"term_taxonomy_id":3965,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3671,"name":"Globe Valve Flow Direction","slug":"globe-valve-flow-direction","term_group":0,"term_taxonomy_id":3671,"taxonomy":"post_tag","description":"<!-- wp:generateblocks\/button-container {\"uniqueId\":\"f8260ba6\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"e4f70767\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-e4f70767 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET GLOBE VALVE FLOW DIRECTION INFORMATION<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_d5c49d-10\"} \/-->\r\n\r\n<!-- wp:heading -->\r\n<h2>Globe Valve Direction of Flow<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n<a href=\"https:\/\/zecovalve.com\/product-category\/globe-valve\">Globe valves<\/a> have become one of the most-used valves in companies in almost every industry. And with their ability to start, stop, and throttle fluid flow within a pipeline, it\u2019s easy to see why.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nGenerally speaking, the flow of globe vales is from down to up. It means the medium will go through from the disc downside and then out by the upside. Globe valves usually adopt a compulsory sealed design, so closing the valve offer pressure to the disc against the seat. So if you want to open the valve, the globe valve disc must overcome resistance made by stem and packing friction, medium pressure will offer adverse pressure which helps open the valve. It means you can use less force than the closing valve. So the stem diameter should be larger, to avoid stem bending fault. (depending on the metal material's physical performance of the stem ). In recent years, there are more and more valve pressure seals, the medium through the upper disc to the down disc, so the close valve force is smaller than the open valve force, valve shaft diameter is allowed to be smaller.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nBut some opinions disagree with it, especially for a globe valve with a larger size (for example, a size bigger than DN250), the globe valve usually adopts a valve pressure seal, and considering closing valve force, it is easy to reach the seal performance. But it should take the stabilization of the valve into consideration when the valve stem diameter is smaller than the seat diameter.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nBut how exactly do these valves work and what\u2019s the globe valve direction flow?\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>How do Globe Valves Work?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA globe valve is primarily designed to stop, start and regulate flow. It is comprised of a movable disk and a stationary ring seat in a generally spherical body. The seat of a globe valve is in the middle of and parallel to the pipe, and the opening in the seat is closed off with the disk. When the handle is turned, manually or through an actuator, a disc is lowered or raised by means of the valve stem. When the disc is fully lowered, the fluid flow is shut off. When the disc is fully raised, the fluid flow is at its maximum rate. When the disc is raised to the less than maximum level, the fluid flow is regulated in proportion to the vertical travel of the disc.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-globe-valve-flow-direction\"><strong>Globe Valve Flow Direction<\/strong><\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n-For low-temperature applications, globe and angle valves are ordinarily installed so that pressure under the disk. This promotes easy operation, helps protect the packing, and eliminates a certain amount of erosive action to the seat and disk faces.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n-For high-temperature steam service, globe valves are installed so that pressure is above the disk. Otherwise, the stem will contract upon cooling and tend to lift the disk off the seat ( and leak).\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Flow to Open (FTO)<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nAlso referred to as standard or forward flow, or in globe valves, flow under the seat. Think about when you've controlled the flow of water from a garden hose with your thumb. Your thumb acts like the face of the plug in a globe valve - flow is pushing against your thumb to open a flow path for the water.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Flow to Close (FTC)<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nAlso referred to as reverse flow or in globe valves, flow over the seat. Consider a drain plug in a bathtub. The flow direction is against the back or top of the plug (rather than the face) creating a tendency for the plug to close into the drain.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:image {\"align\":\"center\",\"id\":27401,\"width\":376,\"height\":387,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\r\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img class=\"wp-image-27401\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2023\/02\/GLOBE-VALVE-FTO-FTC.png\" alt=\"\" width=\"376\" height=\"387\" \/><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":8,"filter":"raw"},{"term_id":3966,"name":"globe valve internal","slug":"globe-valve-internal","term_group":0,"term_taxonomy_id":3966,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1806,"name":"globe valves","slug":"globe-valves","term_group":0,"term_taxonomy_id":1806,"taxonomy":"post_tag","description":"","parent":0,"count":7,"filter":"raw"},{"term_id":2280,"name":"needle globe valve","slug":"needle-globe-valve","term_group":0,"term_taxonomy_id":2280,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2282,"name":"plunger globe valve","slug":"plunger-globe-valve","term_group":0,"term_taxonomy_id":2282,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1929,"label":"Globe Valve"}],"post_tag":[{"value":1970,"label":"Angle Globe Valve"},{"value":2283,"label":"bellows globe valve"},{"value":2284,"label":"direct globe valve"},{"value":2285,"label":"flange globe valve"},{"value":2281,"label":"forged steel globe valve"},{"value":3965,"label":"globe valve characteristics"},{"value":3671,"label":"Globe Valve Flow Direction"},{"value":3966,"label":"globe valve internal"},{"value":1806,"label":"globe valves"},{"value":2280,"label":"needle globe valve"},{"value":2282,"label":"plunger globe valve"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Characteristics and Kinds of Globe Valves - Angle Globe Valve | ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/pt\/characteristics-and-selection-of-17-kinds-of-globe-valves.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Characteristics and Kinds of Globe Valves - Angle Globe Valve | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"Flow Characteristics of Globe Valve The opening and closing parts of the stop valve (globe valve) are plug-shaped discs, their sealing surface ... 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