{"id":2604,"count":9,"description":"\r\n\r\nPara muitas aplica\u00e7\u00f5es que exigem fechamento estanque a bolhas, as v\u00e1lvulas borboleta de duplo deslocamento simplesmente n\u00e3o atendem. Nestes casos, as v\u00e1lvulas borboleta de triplo deslocamento s\u00e3o a escolha perfeita, como a BM Engineering Supplies explica neste \u00faltimo artigo tutorial.\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nOBTER PRE\u00c7O DE V\u00c1LVULA BORBOLETA TRIPLO OFFSET<\/strong><\/a>\r\n\r\n\r\n\r\n\r\n

O que \u00e9 uma v\u00e1lvula borboleta de deslocamento triplo?<\/h2>\r\n\r\n\r\n\r\n\r\nA v\u00e1lvula borboleta possui um design muito compacto pertencente \u00e0 fam\u00edlia quarter. \u00c9 leve, f\u00e1cil de operar e possui menor torque. \u00c9 considerada a melhor escolha para aplica\u00e7\u00f5es cr\u00edticas e severas. O projeto da v\u00e1lvula de deslocamento triplo atinge vazamento zero no contato metal com metal. A sede com revestimento r\u00edgido elimina o atrito entre a sede e o anel de veda\u00e7\u00e3o ao longo do caminho do fluxo para prolongar a vida \u00fatil do ciclo. Sua veda\u00e7\u00e3o uniforme pode operar com mais frequ\u00eancia e abrir e fechar rapidamente.\r\n\r\n\r\n\r\n\r\n

O que exatamente \u00e9 a tecnologia Triple Offset<\/h2>\r\n\r\n\r\n\r\n\r\nUma v\u00e1lvula borboleta de deslocamento triplo possui 3 deslocamentos separados. Dois dos deslocamentos se aplicam \u00e0 localiza\u00e7\u00e3o do eixo em rela\u00e7\u00e3o \u00e0 linha central do furo e \u00e0 linha central das superf\u00edcies de veda\u00e7\u00e3o do disco\/sede. O terceiro deslocamento \u00e9 o desenho no eixo do \u00e2ngulo do cone do assento.\r\n\r\n\r\n\r\n\r\n\r\nDeslocamento zero<\/strong>: O disco gira em torno do eixo central permitindo uma rota\u00e7\u00e3o potencial de 360\u00ba. A veda\u00e7\u00e3o \u00e9 obtida pelo disco deformando a veda\u00e7\u00e3o macia, resultando em atrito total durante todo o ciclo operacional.\r\n\r\n\r\n\r\n\r\n\r\nDeslocamento duplo<\/strong>: Para permitir o deslocamento da sede, o eixo \u00e9 deslocado da linha central da sede do disco e da veda\u00e7\u00e3o do corpo (deslocamento um) e da linha central do furo (deslocamento dois). Isto cria uma a\u00e7\u00e3o de came durante a opera\u00e7\u00e3o para levantar a sede para fora da veda\u00e7\u00e3o, resultando em atrito durante os primeiros 10 graus de abertura e os 10 graus finais de fechamento.\r\n\r\n\r\n\r\n\r\n\r\nDeslocamento triplo<\/strong>: O terceiro deslocamento \u00e9 o desenho geom\u00e9trico dos componentes de veda\u00e7\u00e3o. Cada componente de veda\u00e7\u00e3o \u00e9 usinado em um perfil c\u00f4nico deslocado, resultando em um cone em \u00e2ngulo reto. Isto garante um movimento sem atrito durante todo o seu ciclo operacional. O contato \u00e9 feito apenas no ponto final de fechamento com o \u00e2ngulo de 90\u00b0 atuando como batente mec\u00e2nico; resultando em nenhum deslocamento excessivo do assento do disco.\r\n\r\n\r\n\r\n\r\n
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Benef\u00edcios das v\u00e1lvulas borboleta de deslocamento triplo<\/h2>\r\n\r\n\r\n\r\n\r\nO deslocamento triplo, como o nome indica, usa tr\u00eas deslocamentos separados para obter um fechamento \u00e0 prova de bolhas. Um dos deslocamentos aplica-se \u00e0 localiza\u00e7\u00e3o do eixo da v\u00e1lvula em rela\u00e7\u00e3o \u00e0 linha central do furo. Outro deslocamento est\u00e1 entre a linha central da superf\u00edcie de veda\u00e7\u00e3o do disco\/sede e o eixo. Ent\u00e3o, o terceiro deslocamento \u00e9 a geometria da superf\u00edcie de assentamento, que cria um formato c\u00f4nico do disco e da sede. A combina\u00e7\u00e3o dessas tr\u00eas compensa\u00e7\u00f5es confere a esta v\u00e1lvula os principais benef\u00edcios que s\u00e3o os seguintes:\r\n\r\n\r\n\r\n\r\n
    \r\n \t
  • Desenho Geom\u00e9trico<\/strong>: O design dos componentes de veda\u00e7\u00e3o assume um formato de cone em \u00e2ngulo reto. Resultando em um design de a\u00e7\u00e3o exc\u00eantrica e em \u00e2ngulo reto, onde os componentes de veda\u00e7\u00e3o nunca entram em contato at\u00e9 seu grau final de fechamento. Assim, permitindo uma veda\u00e7\u00e3o repet\u00edvel e uma vida \u00fatil prolongada da v\u00e1lvula devido \u00e0 sua natureza livre de atrito. Al\u00e9m disso, o movimento sem atrito em toda a v\u00e1lvula permite que um atuador de torque relativamente mais baixo seja usado na opera\u00e7\u00e3o deste tipo de v\u00e1lvula. Esse design o torna ideal para automa\u00e7\u00e3o.<\/li>\r\n \t
  • Veda\u00e7\u00e3o metal-metal<\/strong>: Devido ao mecanismo de veda\u00e7\u00e3o sem atrito, as v\u00e1lvulas borboleta de deslocamento triplo usam uma veda\u00e7\u00e3o metal com metal. Isso permite um fechamento herm\u00e9tico em sistemas de alta press\u00e3o e alta temperatura. As aplica\u00e7\u00f5es que utilizam fric\u00e7\u00e3o na veda\u00e7\u00e3o geralmente utilizam elast\u00f4meros ou materiais macios para o interno da v\u00e1lvula, que podem deteriorar-se com o aumento da temperatura ou quando a v\u00e1lvula \u00e9 submetida \u00e0 corros\u00e3o. Mas com o deslocamento triplo, ligas resistentes \u00e0 corros\u00e3o podem servir tanto para o disco da v\u00e1lvula quanto para a sede, proporcionando desempenho de vazamento zero.<\/li>\r\n \t
  • Aus\u00eancia de c\u00e1ries<\/strong>: Em uma v\u00e1lvula de deslocamento triplo, n\u00e3o h\u00e1 cavidades entre os componentes de veda\u00e7\u00e3o. Portanto, n\u00e3o h\u00e1 espa\u00e7o para que detritos obstruam e interrompam o mecanismo de veda\u00e7\u00e3o, ao contr\u00e1rio das v\u00e1lvulas de gaveta e de esfera. Isto minimiza os custos de manuten\u00e7\u00e3o e prolonga a vida \u00fatil da v\u00e1lvula.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n

    V\u00e1lvula borboleta de deslocamento \u00fanico versus v\u00e1lvula borboleta de deslocamento triplo<\/h2>\r\n\r\n\r\n\r\n\r\nA v\u00e1lvula borboleta de deslocamento \u00fanico n\u00e3o \u00e9 comum no mercado porque compartilha muitas semelhan\u00e7as com a v\u00e1lvula conc\u00eantrica\/deslocamento zero. Abaixo est\u00e1 uma tabela destacando as diferen\u00e7as entre as v\u00e1lvulas de deslocamento simples e triplo.\r\n\r\n\r\n\r\n\r\n
    \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Recurso<\/strong><\/td>\r\nV\u00e1lvula de deslocamento \u00fanico\/conc\u00eantrica<\/strong><\/td>\r\nV\u00e1lvula de deslocamento triplo<\/strong><\/td>\r\n<\/tr>\r\n
    Tipo de veda\u00e7\u00e3o<\/td>\r\nA sede da v\u00e1lvula geralmente \u00e9 feita de pol\u00edmeros ou outros materiais macios para permitir uma veda\u00e7\u00e3o por fric\u00e7\u00e3o com o disco de metal.<\/td>\r\nOs tr\u00eas deslocamentos permitem veda\u00e7\u00f5es metal-metal usando ligas tanto para a sede quanto para o disco.<\/td>\r\n<\/tr>\r\n
    Fric\u00e7\u00e3o do assento<\/td>\r\nAlto, porque o atrito \u00e9 o mecanismo b\u00e1sico de veda\u00e7\u00e3o. Assim, \u00e9 suscet\u00edvel ao desgaste e resulta numa vida \u00fatil mais curta do assento.<\/td>\r\nO atrito da sede \u00e9 insignificante porque a veda\u00e7\u00e3o \u00e9 feita por press\u00e3o de contato. Como resultado, a sede da v\u00e1lvula desfruta de uma vida operacional muito mais longa.<\/td>\r\n<\/tr>\r\n
    Classifica\u00e7\u00e3o de classe de press\u00e3o ANSI<\/td>\r\nEmbora esta v\u00e1lvula possa fornecer um fechamento estanque a bolhas, seu mecanismo de veda\u00e7\u00e3o inferior e a suscetibilidade ao desgaste limitam-na \u00e0 classe 150.<\/td>\r\nOferece veda\u00e7\u00e3o confi\u00e1vel que n\u00e3o se desgasta facilmente. Modelos como o deslocamento triplo podem atingir uma classifica\u00e7\u00e3o de 1.500 libras.<\/td>\r\n<\/tr>\r\n
    Servi\u00e7os fluidos<\/td>\r\nDevido ao seu mecanismo de veda\u00e7\u00e3o por fric\u00e7\u00e3o, s\u00f3 \u00e9 eficaz com fluido limpo.<\/td>\r\nO mecanismo de veda\u00e7\u00e3o de deslocamento triplo \u00e9 mais toler\u00e1vel \u00e0 sujeira, portanto funciona com fluidos limpos ou sujos.<\/td>\r\n<\/tr>\r\n
    Formul\u00e1rios<\/td>\r\nComum em utilidades e aplica\u00e7\u00f5es dom\u00e9sticas.<\/td>\r\nPode funcionar eficazmente em servi\u00e7os severos e opera\u00e7\u00f5es c\u00edclicas elevadas.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n

    V\u00e1lvula borboleta de deslocamento duplo versus v\u00e1lvula borboleta de deslocamento triplo<\/h2>\r\n\r\n\r\n\r\n\r\nA v\u00e1lvula de deslocamento duplo \u00e9 uma melhoria da v\u00e1lvula de deslocamento conc\u00eantrico\/\u00fanico e oferece mais versatilidade do que a v\u00e1lvula de deslocamento \u00fanico. As compara\u00e7\u00f5es de recursos s\u00e3o observadas entre o duplo e o triplo abaixo:\r\n\r\n\r\n\r\n\r\n
    \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Recurso<\/strong><\/td>\r\nV\u00e1lvula de deslocamento duplo<\/strong><\/td>\r\nV\u00e1lvula de deslocamento triplo<\/strong><\/td>\r\n<\/tr>\r\n
    Tipo de veda\u00e7\u00e3o e fric\u00e7\u00e3o<\/td>\r\nQuando comparado ao deslocamento \u00fanico, o deslocamento duplo reduz bastante o atrito. No entanto, ainda depende da deforma\u00e7\u00e3o pl\u00e1stica para veda\u00e7\u00e3o. Como resultado, materiais macios ainda s\u00e3o usados na sede da v\u00e1lvula.<\/td>\r\nMant\u00e9m a veda\u00e7\u00e3o metal-metal com press\u00e3o de contato.<\/td>\r\n<\/tr>\r\n
    Servi\u00e7o fluido<\/td>\r\nAdequado apenas para manuseio de fluidos limpos, devido ao atrito em seu mecanismo de veda\u00e7\u00e3o.<\/td>\r\nMant\u00e9m a efic\u00e1cia, mesmo em fluidos sujos.<\/td>\r\n<\/tr>\r\n
    Formul\u00e1rios<\/td>\r\nPode servir em diversas aplica\u00e7\u00f5es industriais, incluindo tratamento de \u00e1gua, produtos qu\u00edmicos, petr\u00f3leo e g\u00e1s e HVAC.<\/td>\r\nAtende tamb\u00e9m em aplica\u00e7\u00f5es industriais, mas atende cen\u00e1rios com maior demanda operacional.<\/td>\r\n<\/tr>\r\n
    Custo<\/td>\r\nTem um custo moderado, ou seja, mais caro que as v\u00e1lvulas de deslocamento \u00fanico, mas menos que as v\u00e1lvulas de deslocamento triplo.<\/td>\r\nA usinagem especializada necess\u00e1ria para obter uma veda\u00e7\u00e3o superior torna-o mais caro.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n","link":"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/butterfly-valve\/triple-offset-butterfly-valve","name":"V\u00e1lvula de borboleta de desvio triplo","slug":"triple-offset-butterfly-valve","taxonomy":"product_cat","parent":2044,"meta":[],"yoast_head":"\nTriple Offset Butterfly Valve - Metal Seated Butterfly 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\/categoria-do-produto\/butterfly-valve\/triple-offset-butterfly-valve\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Triple Offset Butterfly Valve - Metal Seated Butterfly Valve | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"For many applications requiring bubble-tight shut-off, double offset butterfly valves simply do not make the grade. In these cases, Triple Offset Butterfly Valves are a perfect choice, as BM Engineering Supplies explains in this latest tutorial article. GET TRIPLE OFFSET BUTTERFLY VALVE PRICE What is a Triple Offset Butterfly Valve? The butterfly valve has a very compact design belonging to the quarter family. It\u2019s lightweight, easy to operate, and has lower torque. It\u2019s considered a top choice for critical and severe applications. The triple offset valve design achieves zero leakage on metal-to-metal contact. The hard facing seat eliminates the rubbing between the seat and seal ring through the flow path to extend the cycle life. Its uniform sealing can operate more frequently, and open and close quickly. What Exactly is Triple Offset Technology A Triple Offset Butterfly Valve has 3 separate offsets. Two of the offsets apply to the location of the shaft with respect to the centerline of the bore and the centerline of the disc\/seat sealing surfaces. The third offset is the design in the axis of the seat cone angle. Zero Offset: The disc rotates around the centre axis allowing for a potential 360\u00ba rotation. Sealing is achieved by the Disc deforming the soft seal resulting in full friction through the full operating cycle. Double Offset: To allow displacement of the seat the shaft is offset from the centre line of the disc seat and body seal (offset one), and the centre line of the bore (offset two). This creates a cam action during operation to lift the seat out of the seal resulting in friction during the first 10 degrees of opening and the final 10 degrees of closing. Triple Offset: The third offset is the geometry design of the sealing components. The sealing components are each machined into an offset conical profile resulting in a right-angled cone. This ensures friction-free stroking throughout its operating cycle. Contact is only made at the final point of closure with the 90\u00b0 angle acting as a mechanical stop; resulting in no over-travel of the disc seat. Benefits of Triple Offset Butterfly Valves Triple offset, as the name implies, uses three separate offsets to achieve a bubble-tight shut-off. One of the offsets applies to the location of the valve shaft relative to the centerline of the bore. Another offset is between the centerline of the disc\/seat sealing surface and the shaft. Then, the third offset is the geometry of the seating surface, which creates a cone shape of the disc and seat. The combination of these three offsets gives this valve its key benefits which are as follows: Geometric Design: The design of the sealing components takes up a right-angle cone shape. Resulting in a cam-action and right-angled design where the sealing components are never in contact until their final degree of closing. Thus, enabling a repeatable sealing and an extended valve life because of its friction-free nature. In addition, the friction-free stroking throughout the valve allows for a relatively lower torque actuator to be used in operating this type of valve. Such a design makes it ideal for automation. Metal-to-Metal Seal: Because of the frictionless sealing mechanism, triple offset butterfly valves use a metal-to-metal seal. This enables a tight shutoff in high-pressure and high-temperature systems. Applications that use friction in sealing often use elastomers or soft material for the valve trim, which may deteriorate with increasing temperature or when the valve is subjected to corrosion. But with the triple offset, corrosion-resistant alloys can serve for both the valve disc and seat, to deliver zero leakage performance. Absence of Cavities: In a triple-offset valve, there are no cavities between sealing components. Therefore, there is no room for debris to clog and disrupt the sealing mechanism, unlike gate and ball valves. This minimizes maintenance costs and extends the valve life. Single Offset Butterfly Valve vs Triple Offset Butterfly Valve The single offset butterfly valve is not common in the market because it shares a lot of similarities with the concentric\/zero offset valve. Below is a table highlighting the differences between the single and triple offset valves. Feature Single Offset\/Concentric Valve Triple Offset Valve Seal type The valve seat is usually made from polymers or other soft materials to enable a friction seal with the metal disc. The three offsets allow for metal-to-metal seals using alloys for both the seat and disc. Seat friction High, because friction is the basic sealing mechanism. Thus, it is susceptible to wear and results in a shorter seat lifespan. Seat friction is insignificant because sealing is by contact pressure. As a result, the valve seat enjoys much longer operational life. ANSI pressure class rating Although this valve can deliver bubble-tight shut-off, its inferior sealing mechanism, and susceptibility to wear limit this to class 150. Delivers dependable sealing which does not wear easily. Models such as the\u00a0triple offset\u00a0can achieve a 1500-pound rating. Fluid services Because of its friction sealing mechanism, it is only effective with clean fluid. The triple offset sealing mechanism is more tolerable to dirt, so works with clean or dirty fluids. Applications Common in utilities and domestic applications. Can function effectively in severe service and high cyclic operations. Double Offset Butterfly Valve vs Triple Offset Butterfly Valve The double offset valve is an improvement of the concentric\/single offset valve and provides more versatility than the single offset. Feature comparisons are noted between the double and triple below: Feature Double Offset Valve Triple Offset Valve Seal type and friction When compared to the single offset, the double offset greatly reduces friction. However, it still relies on plastic deformation for sealing. As a result, soft materials are still used for the valve seat. Maintains metal-to-metal seal with contact pressure. Fluid service Suitable for handling clean fluids only, due to friction in its sealing mechanism. Maintains effectiveness, even in dirty fluids. Applications Can serve in several industrial applications including water treatment, chemicals, oil and gas, and HVAC. Also serves in industrial applications, but suits scenarios with higher operational demand. Cost Comes at a moderate cost i.e. more expensive than single offset valves but less than triple offset valves. The specialized machining required to achieve superior sealing makes it more expensive.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/butterfly-valve\/triple-offset-butterfly-valve\" \/>\n<meta property=\"og:site_name\" content=\"ZECO Valve\" \/>\n<meta property=\"og:image\" content=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/07\/Triple-Offset-Butterfly-Valve.png\" \/>\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\/product-category\/butterfly-valve\/triple-offset-butterfly-valve#webpage\",\"url\":\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\/triple-offset-butterfly-valve\",\"name\":\"Triple Offset Butterfly Valve - Metal Seated Butterfly Valve | ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\/triple-offset-butterfly-valve#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\/triple-offset-butterfly-valve\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\/triple-offset-butterfly-valve#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\/product-category\/butterfly-valve\",\"url\":\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\",\"name\":\"Butterfly Valve\"}},{\"@type\":\"ListItem\",\"position\":3,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\/triple-offset-butterfly-valve\",\"url\":\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\/triple-offset-butterfly-valve\",\"name\":\"Triple Offset Butterfly Valve\"}}]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/product_cat\/2604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/product_cat\/2044"}],"wp:post_type":[{"href":"https:\/\/zecovalve.com\/pt\/wp-json\/wp\/v2\/product?product_cat=2604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}