{"id":2469,"count":2,"description":"\r\n\r\n\r\n\r\nOBTER O PRE\u00c7O DO MATERIAL DA V\u00c1LVULA DE BORBOLETA<\/strong><\/a>\r\n\r\n\r\n\r\n\r\n

Material da v\u00e1lvula de borboleta<\/h2>\r\n\r\n\r\n\r\n\r\nExistem v\u00e1rios tipos de materiais dispon\u00edveis para a v\u00e1lvula de borboleta para satisfazer os requisitos de diferentes aplica\u00e7\u00f5es, tais como A216 WCB, A216 WCC, A217 WC6, A217 WC9, e assim por diante. De acordo com a nossa rica experi\u00eancia e as necessidades da ind\u00fastria, seleccionamos o material adequado para produzir v\u00e1lvulas de borboleta. Atualmente, fornecemos principalmente v\u00e1lvulas de borboleta de a\u00e7o inoxid\u00e1vel e v\u00e1lvulas de borboleta criog\u00e9nicas. Pode clicar no produto para obter mais pormenores.\r\n\r\n\r\n\r\n\r\n

V\u00e1lvulas de borboleta para venda Lista por material<\/h2>\r\n\r\n\r\n\r\n
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\"V\u00e1lvula
V\u00e1lvula de borboleta em a\u00e7o inoxid\u00e1vel\/ OBTER PRE\u00c7O DA V\u00c1LVULA ><\/em><\/a><\/figcaption><\/figure>\r\n\r\n\r\n\r\n\r\nV\u00e1lvula borboleta de a\u00e7o inoxid\u00e1vel A v\u00e1lvula borboleta de a\u00e7o inoxid\u00e1vel ZECO \u00e9 um tipo de v\u00e1lvula borboleta com alto desempenho e longa vida \u00fatil. \u00c9 composta principalmente por dispositivos de acionamento e pe\u00e7as de a\u00e7o inoxid\u00e1vel.<\/a>\r\n\r\n\r\n\r\n<\/div>\r\n\r\n\r\n\r\n
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\"V\u00e1lvula
V\u00e1lvula borboleta criog\u00e9nica\/ OBTER PRE\u00c7O DA V\u00c1LVULA ><\/em><\/a><\/figcaption><\/figure>\r\n\r\n\r\n\r\n\r\nV\u00e1lvula borboleta criog\u00e9nica O volume do corpo da v\u00e1lvula borboleta criog\u00e9nica ZECO \u00e9 pequeno e de forma sim\u00e9trica, e a espessura da parede \u00e9 uniforme.<\/a>\r\n\r\n\r\n\r\n<\/div>\r\n\r\n\r\n<\/div>\r\n\r\n\r\n\r\n

Introdu\u00e7\u00e3o do material da v\u00e1lvula de borboleta<\/h2>\r\n\r\n\r\n\r\n\r\nA216 WCB e A216 WCC s\u00e3o materiais comumente usados para os corpos e discos das v\u00e1lvulas borboleta, eles s\u00e3o adequados para \u00e1gua, \u00f3leo, g\u00e1s, vapor e outros meios n\u00e3o corrosivos, algumas vezes eles tamb\u00e9m podem ser usados para servi\u00e7o \u00e1cido ap\u00f3s o descarte de NACE MR-01-75 ou NACE MR-01-03 e considere a toler\u00e2ncia \u00e0 corros\u00e3o. Deve-se notar que eles n\u00e3o s\u00e3o adequados para baixa temperatura abaixo de -29 \u2103 e alta temperatura acima de 425 \u2103.\r\n\r\n\r\n\r\n\r\n\r\nCorpo da v\u00e1lvula WCC<\/strong>\r\n\r\n\r\n\r\n\r\n\r\nO grau WCC \u00e9 abrangido pela norma ASTM A216, cuja especifica\u00e7\u00e3o abrange pe\u00e7as fundidas de a\u00e7o-carbono para v\u00e1lvulas, acess\u00f3rios, flanges e outras pe\u00e7as que contenham press\u00e3o para servi\u00e7o a alta temperatura e a qualidade necess\u00e1ria para a montagem com outras pe\u00e7as fundidas ou pe\u00e7as de a\u00e7o forjado por soldadura por fus\u00e3o.\r\n\r\n\r\n\r\n\r\n\r\nAs v\u00e1lvulas A217 WC6 e A217 WC9 s\u00e3o normalmente utilizadas em aplica\u00e7\u00f5es de alta temperatura, normalmente, o meio \u00e9 vapor de alta temperatura ou ar quente, para tais aplica\u00e7\u00f5es, a v\u00e1lvula tem sede de metal com metal ou anel de sede de SS+grafite. Para conseguir um fecho estanque, estas v\u00e1lvulas t\u00eam normalmente um design triplo exc\u00eantrico.\r\n\r\n\r\n\r\n\r\n\r\nCorpo da v\u00e1lvula WC6<\/strong>\r\n\r\n\r\n\r\n\r\n\r\nAs v\u00e1lvulas ASTM A217 Gr. WC6 s\u00e3o feitas de material WC6. A especifica\u00e7\u00e3o ASTM A217 inclui um grupo de a\u00e7os de baixa liga de molibd\u00e9nio e de molibd\u00e9nio-cr\u00f3mio. O material WC6 \u00e9 um a\u00e7o com 1 \u00bc de cr\u00f3mio e \u00bd molibd\u00e9nio.\r\n\r\n\r\n\r\n\r\n\r\nA352 LCB e A352 LCC s\u00e3o geralmente usados para aplica\u00e7\u00f5es de baixa temperatura, geralmente, o meio \u00e9 de baixa temperatura, mas acima de -46 \u2103 ou a v\u00e1lvula \u00e9 instalada ao ar livre em uma \u00e1rea de um ambiente frio. Mas esses materiais n\u00e3o podem ser usados para alta temperatura acima de 345 \u2103.\r\n\r\n\r\n\r\n\r\n\r\nA351 CF8, A351 CF8M, A351 CF3, e A351 CF3M, estes a\u00e7os inoxid\u00e1veis austen\u00edticos s\u00e3o anti-ferrugem e anti-corros\u00e3o, adequados para o meio de v\u00e1rios tipos de \u00e1cido. Tamb\u00e9m t\u00eam um \u00f3timo desempenho para aplica\u00e7\u00f5es a baixa e alta temperatura, mas o seu custo \u00e9 muito superior ao do a\u00e7o-carbono.\r\n\r\n\r\n\r\n\r\n\r\nO bronze-alum\u00ednio, como o B148 C95500 e o B148 C95800, \u00e9 perfeitamente adequado para aplica\u00e7\u00f5es em \u00e1gua do mar. A v\u00e1lvula de borboleta de bronze-alum\u00ednio \u00e9 amplamente utilizada em aplica\u00e7\u00f5es offshore e em condutas de \u00e1gua do mar. Como o seu custo \u00e9 elevado, uma v\u00e1lvula de borboleta de grandes dimens\u00f5es \u00e9 normalmente utilizada como material do disco para o design da linha central.\r\n\r\n\r\n\r\n\r\n\r\nOs a\u00e7os duplex A890 4A, A890 5A, SAF2205, S31803 e os a\u00e7os super duplex A890 6A, SAF2507 e S32750 t\u00eam uma gama de aplica\u00e7\u00e3o semelhante \u00e0 do bronze-alum\u00ednio, t\u00eam uma boa resist\u00eancia \u00e0 corros\u00e3o por cloretos, pelo que s\u00e3o amplamente utilizados para aplica\u00e7\u00f5es em \u00e1gua do mar e em \u00e1gua produzida.\r\n\r\n\r\n\r\n\r\n

O que \u00e9 uma sede numa v\u00e1lvula?<\/h2>\r\n\r\n\r\n\r\n\r\nEssencialmente, a sede de uma v\u00e1lvula \u00e9 o local onde o componente m\u00f3vel de uma v\u00e1lvula assenta quando est\u00e1 na posi\u00e7\u00e3o fechada. Em aplica\u00e7\u00f5es de v\u00e1lvulas borboleta, o disco assenta firmemente na sede para fechar e vedar a v\u00e1lvula. As sedes s\u00e3o concebidas para manter a veda\u00e7\u00e3o intacta apesar das tens\u00f5es t\u00e9rmicas, de fric\u00e7\u00e3o e de impacto de um processo.\r\n\r\n\r\n\r\n\r\n

Introdu\u00e7\u00e3o do material da sede da v\u00e1lvula borboleta<\/h2>\r\n\r\n\r\n\r\n\r\nA sede da v\u00e1lvula \u00e9 uma pe\u00e7a amov\u00edvel no interior da v\u00e1lvula. A sua principal fun\u00e7\u00e3o \u00e9 apoiar o n\u00facleo da v\u00e1lvula para que fique totalmente fechado ou totalmente fechado e formar um par de veda\u00e7\u00e3o. Em circunst\u00e2ncias normais, o di\u00e2metro da sede da v\u00e1lvula \u00e9 o tamanho da v\u00e1lvula. A sede da v\u00e1lvula de borboleta \u00e9 feita de uma vasta gama de materiais, mas os materiais normalmente utilizados incluem EPDM de veda\u00e7\u00e3o suave, borracha nitr\u00edlica (NBR), politetrafluoroetileno (PTFE) e materiais de liga dura de veda\u00e7\u00e3o dura de metal. tipo. Vamos apresent\u00e1-los um a um a seguir.\r\n\r\n\r\n\r\n\r\n
    \r\n \t
  1. EPDM: Em compara\u00e7\u00e3o com outras borrachas de uso geral, o EPDM tem grandes vantagens.\r\n
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    • O desempenho em termos de custos \u00e9 muito elevado. Entre as borrachas normalmente utilizadas, o EPDM tem a densidade de borracha bruta mais leve e pode ser enchido em grande quantidade, reduzindo o custo da borracha.<\/li>\r\n \t
    • O material EPDM \u00e9 resistente ao envelhecimento, \u00e0 exposi\u00e7\u00e3o solar, ao calor, \u00e0 humidade e \u00e0 radia\u00e7\u00e3o, e \u00e9 adequado para meios \u00e1cidos e alcalinos fracos. Boas propriedades de isolamento.<\/li>\r\n \t
    • A faixa de temperatura aplic\u00e1vel pode ser t\u00e3o baixa quanto -40 \u2103 -60 \u2103, e pode ser usada por um longo tempo sob a condi\u00e7\u00e3o de temperatura de 130 \u2103.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t
    • Borracha de nitrilo (NBR): resist\u00eancia ao \u00f3leo, resist\u00eancia ao calor, resist\u00eancia \u00e0 abras\u00e3o e boa resist\u00eancia \u00e0 \u00e1gua, estanquidade ao ar e excelentes propriedades de liga\u00e7\u00e3o. \u00c9 muito utilizada em condutas de petr\u00f3leo. A desvantagem \u00e9 que n\u00e3o \u00e9 resistente a baixas temperaturas, ao ozono, tem um fraco desempenho de isolamento e elasticidade geral.<\/li>\r\n \t
    • Politetrafluoroetileno (PTFE): Um fluoropl\u00e1stico, este material tem uma forte resist\u00eancia a \u00e1cidos, \u00e1lcalis e v\u00e1rios solventes org\u00e2nicos. Ao mesmo tempo, o material \u00e9 resistente a altas temperaturas e pode ser usado continuamente a 260 \u00b0 C, e a temperatura m\u00e1xima de uso pode chegar a 290-320 \u00b0 C. O surgimento do PTFE resolveu com sucesso muitos problemas nas ind\u00fastrias qu\u00edmica, de petr\u00f3leo, farmac\u00eautica e outras.<\/li>\r\n \t
    • VITON (V): Classificado para temperaturas de 0\u00b0F a 300\u00b0F. Viton \u00e9 uma marca registada da E.I. DuPont. Flour \u00e9 a marca comercial da 3M para o elast\u00f3mero de fluorocarbono equivalente. Este material oferece uma resist\u00eancia a temperaturas mais elevadas e uma excelente resist\u00eancia qu\u00edmica. \u00c9 resistente a produtos de hidrocarbonetos e \u00e1cidos minerais, tanto em solu\u00e7\u00f5es dilu\u00eddas como concentradas. No entanto, nunca deve ser utilizado em aplica\u00e7\u00f5es de vapor e \u00e9 relativamente fraco no servi\u00e7o de \u00e1gua.<\/li>\r\n \t
    • Vedante met\u00e1lico duro (liga dura): O material da sede da v\u00e1lvula de veda\u00e7\u00e3o met\u00e1lica dura tem muito boa resist\u00eancia a altas temperaturas e a altas press\u00f5es, resist\u00eancia \u00e0 corros\u00e3o, resist\u00eancia ao desgaste e outras caracter\u00edsticas, o que compensa os defeitos do material de veda\u00e7\u00e3o macio que n\u00e3o \u00e9 resistente a altas temperaturas e altas press\u00f5es. No entanto, o material de veda\u00e7\u00e3o r\u00edgido tem requisitos elevados no que respeita \u00e0 tecnologia de processamento. A \u00fanica desvantagem da sede met\u00e1lica da v\u00e1lvula de veda\u00e7\u00e3o r\u00edgida \u00e9 o facto de o desempenho de veda\u00e7\u00e3o ser fraco e de ocorrerem fugas ap\u00f3s um longo per\u00edodo de funcionamento.<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n

      Que tipo de material devo utilizar?<\/h2>\r\n\r\n\r\n\r\n\r\nAlgumas caracter\u00edsticas da sede da v\u00e1lvula de borboleta sobrep\u00f5em-se a outras. Segue-se uma compara\u00e7\u00e3o lado a lado destes materiais.\r\n\r\n\r\n\r\n\r\n\r\nEPDM vs BUNA<\/strong>\r\n\r\n\r\n\r\n\r\n\r\nO EPDM \u00e9 resistente a \u00e1lcalis, \u00e1cidos e cetonas. O EPDM n\u00e3o \u00e9 adequado para aplica\u00e7\u00f5es que envolvam combust\u00edveis \u00e0 base de petr\u00f3leo, \u00f3leo e solventes n\u00e3o polares, mas o BUNA \u00e9.\r\n\r\n\r\n\r\n\r\n\r\nEmbora tanto o EDPM como o BUNA sejam resistentes \u00e0 abras\u00e3o e ao rasgamento, o EDPM \u00e9 mais resistente ao calor do que o BUNA. Comparando o EDPM com o BUNA, o EDPM \u00e9 melhor para aplica\u00e7\u00f5es no exterior, uma vez que resiste aos elementos.\r\n\r\n\r\n\r\n\r\n\r\nVITON VS BUNA<\/strong>\r\n\r\n\r\n\r\n\r\n\r\nVITON e BUNA s\u00e3o ambos resistentes \u00e0 compress\u00e3o e suportam a maioria dos \u00f3leos, lubrificantes e materiais \u00e0 base de petr\u00f3leo.\r\n\r\n\r\n\r\n\r\n\r\nQuando se compara o VITON com o BUNA, a principal diferen\u00e7a \u00e9 a resist\u00eancia \u00e0 temperatura. O VITON mant\u00e9m uma veda\u00e7\u00e3o com temperaturas cerca de 150\u00b0 mais quentes do que o BUNA. No entanto, o BUNA consegue manter a veda\u00e7\u00e3o a temperaturas muito mais frias do que o VITON.\r\n\r\n\r\n\r\n\r\n\r\nO VITON resiste melhor aos elementos exteriores do que o BUNA, mas o BUNA \u00e9 considerado melhor para aplica\u00e7\u00f5es industriais pesadas.\r\n\r\n\r\n\r\n\r\n\r\nEPDM VS PTFE<\/strong>\r\n\r\n\r\n\r\n\r\n\r\nO EPDM \u00e9 um mon\u00f3mero e o PFTE (Teflon) \u00e9 um fluoropol\u00edmero. Quando se compara o EPDM com o PFTE, a toler\u00e2ncia \u00e0 temperatura e a flexibilidade s\u00e3o as principais diferen\u00e7as. O PTFE pode suportar uma gama mais alargada de temperaturas extremas, tanto frias como quentes.\r\n\r\n\r\n\r\n\r\n\r\nO EPDM \u00e9 uma borracha resistente ao rasgamento que suporta movimentos repetitivos, enquanto o PFTE \u00e9 inel\u00e1stico. O PTFE \u00e9 ideal para processos petrol\u00edferos, enquanto o EPDM \u00e9 adequado para aplica\u00e7\u00f5es AVAC.\r\n\r\n","link":"https:\/\/zecovalve.com\/pt\/categoria-do-produto\/butterfly-valve\/butterfly-valve-by-material","name":"V\u00e1lvula borboleta por material","slug":"butterfly-valve-by-material","taxonomy":"product_cat","parent":2044,"meta":[],"yoast_head":"\nButterfly Material - Butterfly Valve Seat Material | Butterfly Valve Manufacturer - ZECO<\/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\/butterfly-valve-by-material\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Butterfly Material - Butterfly Valve Seat Material | Butterfly Valve Manufacturer - ZECO\" \/>\n<meta property=\"og:description\" content=\"GET BUTTERFLY VALVE MATERIAL PRICE Butterfly Valve Material There is various kind of materials available for butterfly valve to suit the requirement of different application, such as A216 WCB, A216 WCC, A217 WC6, A217 WC9, and so on. According to our rich experience and industry needs, we select the proper material to produce butterfly valves. Currently, we mainly supply stainless steel butterfly valves and cryogenic butterfly valves. You may click the product to get more details. Butterfly Valves for Sale List by Material Stainless Steel Butterfly Valve\/ GET VALVE PRICE > Stainless Steel Butterfly Valve ZECO stainless steel butterfly valve is a kind of butterfly valve with high performance and long service life. It is mainly composed of driving devices and stainless steel parts.\/ GET VALVE PRICE > Cryogenic Butterfly Valve\/ GET VALVE PRICE > Cryogenic Butterfly Valve ZECO cryogenic butterfly valve body volume is small and symmetrical in shape, and the wall thickness is uniform.\/ GET VALVE PRICE > Introduction of Butterfly Valve Material A216 WCB and A216 WCC are commonly used materials for the butterfly valve bodies and disc, they are suitable for water, oil, gas, steam, and other non-corrosive media, some times they can also be used for sour service after disposing of NACE MR-01-75 or NACE MR-01-03 and consider corrosion allowance in. It should be noticed that they are not suitable for low-temperature below -29\u2103 and high-temperature over 425\u2103. WCC Valve Body Grade WCC is covered by ASTM A216 standard, which specification covers carbon steel castings for valves, fittings, flanges, and other pressure-containing parts for high-temperature service and the quality required for assembly with other castings or wrought steel parts by fusion welding. A217 WC6 and A217 WC9 are usually used for high-temperature applications, usually, the medium is high-temperature steam or hot air, for such applications, the valve is with metal to metal seat or SS+Graphite seat ring. In order to achieve tight shut-off, these valves are usually of a triple eccentric design. WC6 Valve Body ASTM A217 Gr. WC6 Valves are made up of WC6 material. The specification ASTM A217 includes a low alloy steel group of molybdenum and chromium molybdenum steels. The WC6 material is 1 \u00bc chromium \u00bd molybdenum steel. A352 LCB and A352 LCC are usually used for low-temperature applications, usually, the medium is of low-temperature but over -46\u2103 or the valve is installed outdoors in an area of a cold environment. But these materials can not be used for high-temperature over 345\u2103. A351 CF8, A351 CF8M, A351 CF3, and A351 CF3M, these austenitic stainless steel that is anti-rust and anti-corrosion, suitable for the medium of various kinds of acid. They also perform great for low-temperature and high-temperature applications but their cost of them is much higher than carbon steel. Aluminum-bronze like B148 C95500 and B148 C95800 are perfectly suitable for seawater application. Al-Bronze butterfly valve is widely used in offshore applications and seawater pipelines. Because the cost of it is high, a big-size butterfly valve usually uses as a disc material for centerline design. Duplex Steel A890 4A, A890 5A, SAF2205, S31803 and super duplex steel A890 6A, SAF2507, and S32750 have similar application range of Al-Bronze, they have good resistance to chloride corrosion, so they are widely used for seawater application and produced water application. What is a Seat On a Valve? Essentially, a valve seat is where the moving component of a valve rests when in the closed position. In butterfly valve applications, the disc rests securely on the seat to close and seal the valve. Seats are designed to keep the seal intact despite the thermal, friction, and impact stresses of a process. Introduction of Butterfly Valve Seat Material The valve seat is a detachable part inside the valve. Its main function is to support the valve core to be fully closed or fully closed and to form a sealing pair. Under normal circumstances, the diameter of the valve seat is the size of the valve. The butterfly valve seat is made of a wide range of materials, but the commonly used materials include soft-seal EPDM, nitrile rubber (NBR), polytetrafluoroethylene (PTFE), and metal hard-seal hard alloy materials. kind. Let\u2019s introduce them one by one below. EPDM: Compared with other general-purpose rubbers, EPDM has great advantages. The cost performance is very high. Among the commonly used rubbers, EPDM has the lightest raw rubber density and can be filled in a large amount, reducing the cost of the rubber. EPDM material is resistant to aging, sun exposure, heat resistance, moisture resistance, and radiation resistance, and is suitable for weak acid and weak alkali media. Good insulation properties. The applicable temperature range can be as low as -40\u2103\u201360\u2103, and it can be used for a long time under the temperature condition of 130\u2103. Nitrile rubber (NBR): oil resistance, heat resistance, abrasion resistance and good water resistance, air tightness, and excellent bonding properties. It is widely used in petroleum pipelines. The disadvantage is that it is not resistant to low temperatures, ozone, poor insulation performance, and general elasticity. Polytetrafluoroethylene (PTFE): A fluoroplastic, this material has strong resistance to acids, alkalis, and various organic solvents. At the same time, the material is resistant to high temperatures and can be used continuously at 260\u00b0C, and the maximum use temperature can reach 290-320\u00b0C. The emergence of PTFE has successfully solved many problems in the chemical, petroleum, pharmaceutical, and other industries. VITON (V): Rated for temperatures 0\u00b0F to 300\u00b0F. Viton is an E.I. DuPont trademark. Flour is 3M\u2019s trademark for the equivalent fluorocarbon elastomer. This material offers higher temperature resistance and outstanding chemical resistance. It is resistant to hydrocarbon products and mineral acids, both dilute and concentrated solutions. However, it is never to be used in steam applications and is relatively poor in water service. Metal hard seal (hard alloy): The material of the metal hard seal valve seat has very good high temperature and high-pressure resistance, corrosion resistance, wear resistance, and other characteristics, which makes up for the defects of soft seal material that is not resistant to high temperature and high pressure. However, the hard seal material has high requirements on the processing technology. The only disadvantage of the metal hard seal valve seat is that the sealing performance is poor, and leakage will occur after a long time of operation. What Type of Material Should I Use? Some butterfly valve seat characteristics overlap with others. Below is a side-by-side comparison of these materials. EPDM vs BUNA EPDM is resistant to alkalis, acids, and ketones. EPDM is not suitable for applications that involve petroleum-based fuels, oil, and non-polar solvents, but BUNA is. While both EDPM and BUNA are abrasion and tear-resistant, EDPM is more heat-resistant than BUNA. When comparing EDPM vs BUNA, EDPM is better for outdoor applications as it stands up to elements. VITON VS BUNA VITON and BUNA are both compression set resistant and endure most oils, lubricants, and petroleum-based materials. When comparing VITON vs BUNA, the main difference is temperature resistance. VITON maintains a seal with temperatures about 150\u00b0 hotter than BUNA would. However, BUNA can maintain a seal in much colder temperatures than VITON. VITON stands up better for outdoor elements than BUNA, but BUNA is considered to be better for heavy-duty industrial applications. EPDM VS PTFE EPDM is a monomer and PFTE (Teflon) is a fluoropolymer. When comparing EPDM vs PFTE, temperature tolerance and flexibility are the main differences. PTFE can withstand a wider range of temperatures of both cold and hot extremes. EPDM is a tear-resistant rubber that endures repetitive motion, whereas PFTE is inelastic. 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