{"id":1894,"count":6,"description":"\r\n\r\n\r\n\r\nUma v\u00e1lvula globo \u00e9 uma v\u00e1lvula de movimento linear projetada principalmente para parar, iniciar e regular o fluxo. O disco de uma v\u00e1lvula Globo pode ser totalmente removido do caminho do fluxo ou pode fechar completamente o caminho do fluxo.\r\n\r\n\r\n\r\n\r\n\r\nOBTENHA VANTAGENS E DESVANTAGENS DAS INFORMA\u00c7\u00d5ES SOBRE V\u00c1LVULAS GLOBO <\/strong><\/a>\r\n\r\n\r\n\r\n\r\n

Vantagens e desvantagens das v\u00e1lvulas globo<\/h2>\r\n\r\n\r\n\r\n

VANTAGENS<\/h3>\r\n\r\n\r\n\r\n
    \r\n \t
  • Boa capacidade de desligamento<\/li>\r\n \t
  • Capacidade de acelera\u00e7\u00e3o moderada a boa<\/li>\r\n \t
  • Curso mais curto (em compara\u00e7\u00e3o com uma v\u00e1lvula gaveta)<\/li>\r\n \t
  • Dispon\u00edvel em padr\u00f5es T, Y e \u00e2ngulo, cada um oferecendo recursos exclusivos<\/li>\r\n \t
  • F\u00e1cil de usinar ou recapear os assentos<\/li>\r\n \t
  • Com o disco n\u00e3o preso \u00e0 haste, a v\u00e1lvula pode ser usada como v\u00e1lvula de reten\u00e7\u00e3o<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n

    DESVANTAGENS<\/h3>\r\n\r\n\r\n\r\n
      \r\n \t
    • Maior queda de press\u00e3o (em compara\u00e7\u00e3o com uma v\u00e1lvula gaveta)<\/li>\r\n \t
    • Requer maior for\u00e7a ou um atuador maior para assentar a v\u00e1lvula (com press\u00e3o sob a sede)<\/li>\r\n \t
    • Fluxo de estrangulamento sob o assento e fluxo de corte sobre o assento<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n

      Dire\u00e7\u00e3o de fluxo das v\u00e1lvulas globo<\/h2>\r\n\r\n\r\n\r\n\r\nPara aplica\u00e7\u00f5es com temperaturas baixas, as v\u00e1lvulas de globo s\u00e3o normalmente instaladas de modo a que a press\u00e3o esteja sob o disco. Isto contribui para um funcionamento f\u00e1cil e ajuda a proteger o empanque.\r\n\r\n\r\n\r\n\r\n\r\nPara aplica\u00e7\u00f5es com servi\u00e7o de vapor em alta temperatura, as v\u00e1lvulas globo s\u00e3o instaladas de forma que a press\u00e3o fique acima do disco. Caso contr\u00e1rio, a haste se contrair\u00e1 durante o resfriamento e tender\u00e1 a levantar o disco da sede.\r\n\r\n\r\n\r\n\r\n

      Aplica\u00e7\u00f5es t\u00edpicas de v\u00e1lvulas globo<\/h2>\r\n\r\n\r\n\r\n\r\nA seguir est\u00e3o algumas das aplica\u00e7\u00f5es t\u00edpicas das v\u00e1lvulas globo.\r\n\r\n\r\n\r\n\r\n
        \r\n \t
      • Sistemas de \u00e1gua de resfriamento onde o fluxo precisa ser regulado<\/li>\r\n \t
      • Sistema de \u00f3leo combust\u00edvel onde o fluxo \u00e9 regulado e a estanqueidade \u00e9 importante<\/li>\r\n \t
      • Respiradouros de ponto alto e drenos de ponto baixo quando a estanqueidade e a seguran\u00e7a s\u00e3o considera\u00e7\u00f5es importantes<\/li>\r\n \t
      • Sistemas de \u00e1gua de alimenta\u00e7\u00e3o, alimenta\u00e7\u00e3o de produtos qu\u00edmicos, extra\u00e7\u00e3o de ar do condensador e drenagem de extra\u00e7\u00e3o<\/li>\r\n \t
      • Aberturas e drenos da caldeira, aberturas e drenos principais de vapor e drenos do aquecedor<\/li>\r\n \t
      • Selos e drenos de turbina<\/li>\r\n \t
      • Sistema de \u00f3leo lubrificante de turbina e outros<\/li>\r\n<\/ul>\r\n","link":"https:\/\/zecovalve.com\/pt\/tag\/advantages-and-disadvantages-of-globe-valves","name":"Vantagens e Desvantagens das V\u00e1lvulas de Globo","slug":"advantages-and-disadvantages-of-globe-valves","taxonomy":"post_tag","meta":[],"yoast_head":"\nAdvantages and Disadvantages of Globe Valves | 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\/tag\/advantages-and-disadvantages-of-globe-valves\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Advantages and Disadvantages of Globe Valves | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"A Globe valve is a linear motion valve and is primarily designed to stop, start and regulate flow. The disk of a Globe valve can be totally removed from the flow path or it can completely close the flow path. GET ADVANTAGES AND DISADVANTAGES OF GLOBE VALVES INFORMATION Advantages and disadvantages of Globe valves ADVANTAGES Good shutoff capability Moderate to good throttling capability Shorter stroke (compared to a gate valve) Available in tee, wye, and angle patterns, each offering unique capabilities Easy to machine or resurface the seats With the disc not attached to the stem, the valve can be used as a stop-check valve DISADVANTAGES Higher pressure drop (compared to a gate valve) Requires greater force or a larger actuator to seat the valve (with pressure under the seat) Throttling flow under the seat and shutoff flow over the seat Flow direction of Globe Valves For applications with low temperatures, Globe valves are normally installed so that the pressure is under the disc. This contributes to an easy operation and helps protect the packing. For applications with high-temperature steam service, Globe valves are installed so that the pressure is above the disk. Otherwise, the stem will contract upon cooling and tend to lift the disk off the seat. Typical Applications of Globe valves The following are some of the typical applications of Globe valves.. Cooling water systems where flow needs to be regulated Fuel oil system where flow is regulated and leak tightness is of importance High-point vents and low-point drains when leak tightness and safety are major considerations Feedwater, chemical feed, condenser air extraction, and extraction drain systems Boiler vents and drains, main steam vents and drains, and heater drains Turbine seals and drains Turbine lube oil system and others\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/pt\/tag\/advantages-and-disadvantages-of-globe-valves\" \/>\n<meta property=\"og:site_name\" content=\"ZECO Valve\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/zecovalve.com\/#website\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"ZECO Valve\",\"description\":\"Industrial Ball Valve, Gate Valve and Globe Valve Manufacturer\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/zecovalve.com\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/advantages-and-disadvantages-of-globe-valves#webpage\",\"url\":\"https:\/\/zecovalve.com\/tag\/advantages-and-disadvantages-of-globe-valves\",\"name\":\"Advantages and Disadvantages of Globe Valves | ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/tag\/advantages-and-disadvantages-of-globe-valves#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/tag\/advantages-and-disadvantages-of-globe-valves\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/tag\/advantages-and-disadvantages-of-globe-valves#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"position\":2,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/advantages-and-disadvantages-of-globe-valves\",\"url\":\"https:\/\/zecovalve.com\/tag\/advantages-and-disadvantages-of-globe-valves\",\"name\":\"Advantages and Disadvantages of Globe Valves\"}}]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/tags\/1894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/posts?tags=1894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}