{"id":1885,"count":8,"description":"\r\n\r\n\r\n\r\nOBTER INFORMA\u00c7\u00d5ES DO WIKI DA V\u00c1LVULA DE GATE<\/strong><\/a>\r\n\r\n\r\n\r\n\r\n

O que \u00e9 uma v\u00e1lvula de gaveta?<\/h2>\r\n\r\n\r\n\r\n\r\nUma v\u00e1lvula gaveta, tamb\u00e9m conhecida como v\u00e1lvula de eclusa, \u00e9 uma v\u00e1lvula que se abre levantando uma barreira (porta) para fora do caminho do fluido. As v\u00e1lvulas gaveta requerem muito pouco espa\u00e7o ao longo do eixo do tubo e dificilmente restringem o fluxo de fluido quando a comporta est\u00e1 totalmente aberta. As faces da porta podem ser paralelas, mas geralmente t\u00eam formato de cunha (para poder aplicar press\u00e3o na superf\u00edcie de veda\u00e7\u00e3o).\r\n\r\n\r\n\r\n\r\n

Como funciona uma v\u00e1lvula gaveta?<\/h2>\r\n\r\n\r\n\r\n\r\nA gate valve is a control valve that either allows media to flow through unobstructed or stops the fluid flow. The main advantage of a gate valve is the straight-through unobstructed passageway, which induces minimal pressure loss over the valve. The unobstructed bore of a gate valve also allows for a pig's passage in cleaning pipe procedures, unlike butterfly valves. However, gate valves are slower than quarter-turn valves and should only be used in the fully open or closed position, not to regulate the flow. Automated gate valves exist with either an electric or pneumatic actuator, but a manual gate valve is cost-effective since gate valves are typically used infrequently. Gate valves are also commonly referred to as sluice gate valves.\r\n\r\n\r\n\r\n\r\n

Onde as v\u00e1lvulas gaveta s\u00e3o usadas?<\/h2>\r\n\r\n\r\n\r\n\r\nAs v\u00e1lvulas gaveta s\u00e3o frequentemente usadas quando s\u00e3o necess\u00e1rias perdas m\u00ednimas de press\u00e3o e um furo livre. Quando totalmente aberta, uma v\u00e1lvula gaveta t\u00edpica n\u00e3o apresenta obstru\u00e7\u00e3o no caminho do fluxo, resultando em uma perda de press\u00e3o muito baixa, e esse projeto possibilita o uso de um pig para limpeza de tubos. Uma v\u00e1lvula gaveta \u00e9 uma v\u00e1lvula multivoltas, o que significa que a opera\u00e7\u00e3o da v\u00e1lvula \u00e9 feita por meio de uma haste roscada. Como a v\u00e1lvula tem que girar v\u00e1rias vezes para passar da posi\u00e7\u00e3o aberta para a fechada, a opera\u00e7\u00e3o lenta tamb\u00e9m evita efeitos de golpe de ar\u00edete.\r\n\r\n\r\n\r\n\r\n

Vantagens das v\u00e1lvulas gaveta<\/h2>\r\n\r\n\r\n\r\n
    \r\n \t
  • A v\u00e1lvula gaveta tem um design muito simples, relativamente barata e f\u00e1cil de manter.<\/li>\r\n \t
  • Quase n\u00e3o h\u00e1 queda de press\u00e3o na v\u00e1lvula quando ela est\u00e1 na posi\u00e7\u00e3o totalmente aberta.<\/li>\r\n \t
  • A substitui\u00e7\u00e3o do disco da v\u00e1lvula gaveta geralmente n\u00e3o \u00e9 uma tarefa dif\u00edcil.<\/li>\r\n \t
  • A substitui\u00e7\u00e3o dos an\u00e9is da sede geralmente n\u00e3o \u00e9 uma tarefa dif\u00edcil.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n

    Desvantagens das v\u00e1lvulas gaveta<\/h2>\r\n\r\n\r\n\r\n
      \r\n \t
    • As v\u00e1lvulas gaveta n\u00e3o s\u00e3o adequadas para estrangulamento (qualquer posi\u00e7\u00e3o da v\u00e1lvula entre totalmente aberta e totalmente fechada), pois isso cria fluxo turbulento e perdas por atrito. Uma v\u00e1lvula deixada na posi\u00e7\u00e3o quase fechada far\u00e1 com que o meio que flui flua a uma velocidade muito alta atrav\u00e9s das superf\u00edcies de sede da v\u00e1lvula, o que pode causar danos \u00e0s superf\u00edcies ('trefilagem) e passagem\/vazamento da v\u00e1lvula.<\/li>\r\n \t
    • As v\u00e1lvulas gaveta criam fluxo turbulento quando estranguladas e, como resultado, sofrem vibra\u00e7\u00e3o excessiva. Esta situa\u00e7\u00e3o deve ser evitada para evitar danos \u00e0 gaxeta da v\u00e1lvula e outras pe\u00e7as internas.<\/li>\r\n \t
    • Em compara\u00e7\u00e3o com uma v\u00e1lvula globo, as superf\u00edcies de sede de uma v\u00e1lvula gaveta s\u00e3o mais dif\u00edceis de reformar (se os an\u00e9is de sede n\u00e3o forem usados)<\/li>\r\n<\/ul>\r\n","link":"https:\/\/zecovalve.com\/pt\/tag\/gate-valve-wiki","name":"V\u00e1lvula de gaveta Wiki","slug":"gate-valve-wiki","taxonomy":"post_tag","meta":[],"yoast_head":"\nGate Valve Wikipedia - Gate Valve Manufacturer | 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\/gate-valve-wiki\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gate Valve Wikipedia - Gate Valve Manufacturer | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"GET GATE VALVE WIKI INFORMATION What is a Gate Valve? A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier (gate) out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. The gate faces can be parallel but are most commonly wedge-shaped (in order to be able to apply pressure on the sealing surface). How does a Gate Valve work? A gate valve is a control valve that either allows media to flow through unobstructed or stops the fluid flow. The main advantage of a gate valve is the straight-through unobstructed passageway, which induces minimal pressure loss over the valve. The unobstructed bore of a gate valve also allows for a pig’s passage in cleaning pipe procedures, unlike butterfly valves. However, gate valves are slower than quarter-turn valves and should only be used in the fully open or closed position, not to regulate the flow. Automated gate valves exist with either an electric or pneumatic actuator, but a manual gate valve is cost-effective since gate valves are typically used infrequently. Gate valves are also commonly referred to as sluice gate valves. Where are Gate Valves Used? Gate valves are often used when minimum pressure loss and a free bore are needed. When fully open, a typical gate valve has no obstruction in the flow path resulting in a very low-pressure loss, and this design makes it possible to use a pipe-cleaning pig. A gate valve is a multiturn valve meaning that the operation of the valve is done by means of a threaded stem. As the valve has to turn multiple times to go from the open to the closed position, the slow operation also prevents water hammer effects. Advantages of Gate Valves The gate valve is very simple in design, relatively cheap, and easy to maintain. There is almost no pressure drop across the valve when the valve is in the fully open position. Replacement of the gate valve disc is usually not a difficult task. Replacement of the seat rings is usually not a difficult task. Disadvantages of Gate Valves Gate valves are not well suited to throttling (any valve position between fully open and fully closed) as this creates turbulent flow and frictional losses. A valve left in the almost closed position will cause the flowing medium to flow at a very high velocity across the valve\u2019s seating surfaces, this can lead to damage to the surfaces (\u2018wire-drawing) and passing\/leaking of the valve. Gate valves create turbulent flow when throttled and experience excessive vibration as a result. This situation should be avoided to prevent damage from occurring to the valve packing and other internal parts. Compared to a globe valve, a gate valve\u2019s seating surfaces are more difficult to refurbish (if seat rings are not used)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/pt\/tag\/gate-valve-wiki\" \/>\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\/gate-valve-wiki#webpage\",\"url\":\"https:\/\/zecovalve.com\/tag\/gate-valve-wiki\",\"name\":\"Gate Valve Wikipedia - Gate Valve Manufacturer | ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/tag\/gate-valve-wiki#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/tag\/gate-valve-wiki\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/tag\/gate-valve-wiki#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\/gate-valve-wiki\",\"url\":\"https:\/\/zecovalve.com\/tag\/gate-valve-wiki\",\"name\":\"Gate Valve Wiki\"}}]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/tags\/1885","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=1885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}