{"id":9319,"date":"2021-12-30T08:10:22","date_gmt":"2021-12-30T08:10:22","guid":{"rendered":"https:\/\/zecovalve.com\/press-seal-gate-valve-bw-900lb-gate-valvechina-pressure-seal-gate-valve-supplier-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabello.html"},"modified":"2022-08-03T05:53:23","modified_gmt":"2022-08-03T05:53:23","slug":"press-seal-gate-valve-bw-900lb-gate-valvechina-pressure-seal-gate-valve-supplier-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabello","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/pt\/press-seal-gate-valve-bw-900lb-gate-valvechina-pressure-seal-gate-valve-supplier-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabello.html","title":{"rendered":"Como escolher o material da v\u00e1lvula de alta temperatura"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-how-to-choose-valve-materials-for-high-temperature-conditions\"><span style=\"font-weight: bold; font-size: 14pt; font-family: Arial;\">Como escolher materiais de v\u00e1lvula para condi\u00e7\u00f5es de alta temperatura?<\/span><\/h2>\n\n\n\n<p><span style=\"font-family: Arial;\">As condi\u00e7\u00f5es de trabalho em alta temperatura incluem principalmente temperatura subalta, classe I de alta temperatura, classe II de alta temperatura, classe III de alta temperatura, classe IV de alta temperatura e classe V de alta temperatura, que ser\u00e3o introduzidas separadamente abaixo .<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-family: Arial; font-weight: bold;\">1. Temperatura subalta<\/span><\/h3>\n\n\n\n<p><span style=\"font-family: Arial;\">Temperatura sub-alta significa que a temperatura de trabalho da v\u00e1lvula est\u00e1 na faixa de 325 ~ 425 \u2103. Se o meio for \u00e1gua e vapor, s\u00e3o utilizados principalmente WCB, WCC, A105, WC6 e WC9. Se o meio for \u00f3leo contendo enxofre, s\u00e3o usados principalmente C5, CF8, CF3, CF8M, CF3M, etc., que s\u00e3o resistentes \u00e0 corros\u00e3o por sulfeto. Eles s\u00e3o usados principalmente em dispositivos atmosf\u00e9ricos e de v\u00e1cuo e dispositivos de coqueamento retardado em refinarias de petr\u00f3leo.<\/span>.<\/p>\n\n\n\n<p><span style=\"font-family: Arial;\">Atualmente, as v\u00e1lvulas feitas de CF8, CF8M, CF3 e CF3M n\u00e3o s\u00e3o usadas para corros\u00e3o por solu\u00e7\u00e3o \u00e1cida, mas para produtos petrol\u00edferos contendo enxofre e oleodutos e gasodutos. Nesta condi\u00e7\u00e3o de trabalho, a temperatura m\u00e1xima de trabalho de CF8, CF8M, CF3 e CF3M \u00e9 450 \u2103.<\/span><\/p>\n\n\n\n<p><span style=\"font-family: Arial;\">Para v\u00e1lvula de gaveta de tubula\u00e7\u00e3o de vapor de usina de energia, design Zeco com v\u00e1lvula de veda\u00e7\u00e3o de press\u00e3o, a temperatura de aplica\u00e7\u00e3o \u00e9 de 450 \u2103<\/span><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/high-pressure-gate-valve.jpg\" alt=\"V\u00e1lvula de gaveta de alta press\u00e3o\" class=\"wp-image-16591\" width=\"400\" height=\"300\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/high-pressure-gate-valve.jpg 800w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/high-pressure-gate-valve-300x225.jpg 300w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/high-pressure-gate-valve-768x576.jpg 768w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/high-pressure-gate-valve-600x450.jpg 600w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-family: Arial;\"><span style=\"font-weight: bold;\">2. Classe I de alta temperatura<\/span><\/span><\/h3>\n\n\n\n<p><span style=\"font-family: Arial;\">Quando a temperatura de trabalho da v\u00e1lvula \u00e9 de 425 ~ 550 \u2103, ela \u00e9 classe I de alta temperatura (referida como classe PI). O material principal da v\u00e1lvula de n\u00edvel PI \u00e9 CF8 no padr\u00e3o ASTMA351, que \u00e9 \u201ca\u00e7o resistente ao calor de alta qualidade, grau I, m\u00e9dio carbono, cromo-n\u00edquel, terras raras, tit\u00e2nio de alta qualidade\u201d. Como o grau PI \u00e9 um nome espec\u00edfico, o conceito de a\u00e7o inoxid\u00e1vel (P) de alta temperatura est\u00e1 inclu\u00eddo aqui. Portanto, se o meio de trabalho for \u00e1gua ou vapor, embora o a\u00e7o de alta temperatura WC6 (t \u2264 540 \u2103) ou WC9 (t \u2264 570 \u2103) tamb\u00e9m possa ser usado, embora o a\u00e7o de alta temperatura C5 (ZG1Cr5Mo) tamb\u00e9m possa ser usado para \u00f3leo contendo enxofre Eles n\u00e3o podem ser chamados de graus PI aqui.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-family: Arial; font-weight: bold;\">3. Classe de alta temperatura \u2161<\/span><\/h3>\n\n\n\n<p><span style=\"font-family: Arial;\">A temperatura de trabalho da v\u00e1lvula \u00e9 de 550 ~ 650 \u2103, que \u00e9 definida como alta temperatura<\/span> classe II (referida como P classe II, abreviadamente). A v\u00e1lvula de alta temperatura P\u2161 \u00e9 usada principalmente em dispositivos de craqueamento catal\u00edtico de \u00f3leo pesado de refinarias de petr\u00f3leo. Ele cont\u00e9m v\u00e1lvulas de gaveta resistentes ao desgaste com revestimento de alta temperatura usadas no bico de tr\u00eas rota\u00e7\u00e3o e outras pe\u00e7as. O material principal da v\u00e1lvula P \u2161 \u00e9 CF8 no padr\u00e3o ASTMA351 baseado em \u201calta temperatura<span style=\"font-family: Arial;\"> \u2161 grau m\u00e9dio carbono cromo n\u00edquel terras raras tit\u00e2nio t\u00e2ntalo a\u00e7o refor\u00e7ado resistente ao calor\u201d.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-family: Arial; font-weight: bold;\">4. Alta temperatura \u2162<\/span><\/h3>\n\n\n\n<p><span style=\"font-family: Arial;\">A temperatura de trabalho da v\u00e1lvula \u00e9 de 650 ~ 730 \u2103, definida para alta temperatura \u2162 (referida como P \u2162). As v\u00e1lvulas de alta temperatura P\u2162 s\u00e3o usadas principalmente em grandes unidades de craqueamento catal\u00edtico de \u00f3leo pesado em refinarias. O material principal do corpo da v\u00e1lvula de alta temperatura de grau P\u2162 \u00e9 CF8M baseado no padr\u00e3o ASTMA351 \u201cGrau de alta temperatura III m\u00e9dio carbono cromo n\u00edquel molibd\u00eanio terras raras tit\u00e2nio t\u00e2ntalo calor refor\u00e7ado<br>a\u00e7o resistente\u201d.&nbsp;&nbsp;&nbsp;<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-family: Arial;\"><span style=\"font-weight: bold;\">5. Alta temperatura \u2163<\/span><\/span><\/h3>\n\n\n\n<p><span style=\"font-family: Arial;\">A temperatura de trabalho da v\u00e1lvula \u00e9 de 730 ~ 816 \u2103, ajustada em n\u00edvel de alta temperatura \u2163 (referido como n\u00edvel P \u2163 para abreviar). O limite superior da temperatura operacional da v\u00e1lvula PIV \u00e9 816 \u00b0C porque a temperatura m\u00e1xima fornecida na classifica\u00e7\u00e3o de press\u00e3o-temperatura padr\u00e3o ASMEB16134 do projeto da v\u00e1lvula \u00e9 816 \u00b0C (1500\u03c5). Al\u00e9m disso, ap\u00f3s a temperatura de trabalho ultrapassar 816 \u00b0 C, o a\u00e7o est\u00e1 pr\u00f3ximo de entrar na zona de temperatura de forjamento. Neste momento, o metal est\u00e1 na zona de deforma\u00e7\u00e3o pl\u00e1stica, o metal tem boa plasticidade e \u00e9 dif\u00edcil suportar alta press\u00e3o de trabalho e for\u00e7a de impacto sem permanecer deformado. O material principal da v\u00e1lvula P\u2163 \u00e9 CF8M no padr\u00e3o ASTMA351, que \u00e9 um tipo b\u00e1sico \u201ca\u00e7o resistente ao calor refor\u00e7ado com t\u00e2ntalo de tit\u00e2nio de terras raras de alta temperatura grau m\u00e9dio carbono cromo n\u00edquel molibd\u00eanio\u201d. A\u00e7os inoxid\u00e1veis resistentes ao calor, como F310 (teor C \u226501050%) e F310H nos padr\u00f5es CK-20 e ASTMA182.&nbsp;&nbsp;&nbsp;&nbsp;<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-family: Arial;\"><span style=\"font-weight: bold;\"> 6. Alta temperatura \u2164 n\u00edvel<\/span><\/span><\/h3>\n\n\n\n<p><span style=\"font-family: Arial;\">A temperatura de trabalho da v\u00e1lvula \u00e9 superior a 816 \u2103, referida como classe P\u2164, v\u00e1lvula de alta temperatura classe P\u2164 (usada como v\u00e1lvula de corte, n\u00e3o como v\u00e1lvula borboleta reguladora) deve usar m\u00e9todos de projeto especiais, como isolamento de revestimento ou \u00e1gua ou resfriamento de g\u00e1s, etc., pode garantir o funcionamento normal da v\u00e1lvula. Portanto, o limite superior da temperatura de trabalho da v\u00e1lvula de alta temperatura P\u2164 n\u00e3o \u00e9 especificado, porque a temperatura de trabalho da v\u00e1lvula de controle n\u00e3o \u00e9 resolvida apenas por materiais, mas por meios de projeto especiais, e os princ\u00edpios b\u00e1sicos dos meios de projeto s\u00e3o o mesmo. A v\u00e1lvula de alta temperatura P\u2164 pode escolher materiais razo\u00e1veis que possam atender \u00e0 v\u00e1lvula de acordo com seu meio de trabalho e press\u00e3o de trabalho e o m\u00e9todo de design especial adotado. Na v\u00e1lvula de alta temperatura P\u2164, geralmente a v\u00e1lvula de inser\u00e7\u00e3o de combust\u00e3o ou inser\u00e7\u00e3o de v\u00e1lvula borboleta ou placa borboleta geralmente usam liga de alta temperatura HK-30, HK-40 no padr\u00e3o ASTMA297, eles podem resistir \u00e0 oxida\u00e7\u00e3o e redu\u00e7\u00e3o de g\u00e1s abaixo de 1150 \u2103 Resist\u00eancia \u00e0 corros\u00e3o, mas n\u00e3o podem suportar impactos e cargas de alta press\u00e3o.<\/span><\/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\/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\/history-of-automatic-control-valve-zeco-valve-industrial-valve-manufacturer.html\/\">O que s\u00e3o v\u00e1lvulas de controlo autom\u00e1ticas?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/thermoplastic-materials-as-valve-seat.html\/\">Materiais termopl\u00e1sticos como sede de v\u00e1lvula esf\u00e9rica e sede de v\u00e1lvula borboleta<\/a>\n\n<\/div>\n\n\n\n<p>Dez artigos antes e depois<\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/super-high-temperature-gate-valvewc6-pressure-seal-gate-valve-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabellow-sealed-globe-valve.html\/\">v\u00e1lvula de gaveta de super alta temperatura, v\u00e1lvula de veda\u00e7\u00e3o de press\u00e3o WC6 - 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fornecedor de v\u00e1lvulas de esfera de tit\u00e2nio na China, fabricantes de v\u00e1lvula globo criog\u00eanica na China, v\u00e1lvula borboleta C95800 na China, f\u00e1brica de v\u00e1lvula globo selada com fole, empresa de v\u00e1lvula globo inconel 625 | Fabricante profissional de v\u00e1lvulas<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/dn20-pn16-astm-a182-f316-cryogenic-globe-valve-rf-cryogenic-globe-valve-196c-cryogenic-globe-valve-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butte.html\/\">V\u00e1lvula globo criog\u00eanica DN20 PN16 ASTM A182-F316, v\u00e1lvula globo criog\u00eanica RF. V\u00e1lvula globo criog\u00eanica -196 \u00b0 C - fornecedor de v\u00e1lvulas de esfera de tit\u00e2nio na China, fabricantes de v\u00e1lvulas globo criog\u00eanicas na China, v\u00e1lvula borboleta C95800 na China, f\u00e1brica de v\u00e1lvula globo selada com fole, empresa de v\u00e1lvula globo inconel 625 | Fabricante profissional de v\u00e1lvulas<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/a351-cf8-bellow-sealed-globe-valve6-150lb-bellow-sealed-globe-valve-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabellow-sealed-glo.html\/\">V\u00e1lvula globo selada com fole A351 CF8, v\u00e1lvula globo selada com fole de 6&quot; 150LB - fornecedor de v\u00e1lvulas de esfera de tit\u00e2nio na China, fabricantes de v\u00e1lvula globo criog\u00eanica na China, v\u00e1lvula borboleta C95800 na China, f\u00e1brica de v\u00e1lvula globo selada com fole, empresa de v\u00e1lvula globo inconel 625 | Fabricante profissional de v\u00e1lvulas<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/dbb-6000psi-ball-valve-dbb-high-pressure-ball-valves-dbb-sae-ball-valve-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabellow-sealed.html\/\">V\u00e1lvula de esfera DBB 6000psi, v\u00e1lvulas de esfera de alta press\u00e3o DBB, v\u00e1lvula de esfera DBB SAE - fornecedor de v\u00e1lvulas de esfera de tit\u00e2nio na China, fabricantes de v\u00e1lvula globo criog\u00eanica na China, v\u00e1lvula borboleta C95800 na China, f\u00e1brica de v\u00e1lvula globo selada com fole, empresa de v\u00e1lvula globo inconel 625 | Fabricante profissional de v\u00e1lvulas<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/power-plant-minimun-flow-circulation-valve-power-plant-rotork-electrical-actuator-control-valve-super-high-pressure-control-valve-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufa.html\/\">V\u00e1lvula de circula\u00e7\u00e3o de fluxo m\u00ednimo para usina de energia, v\u00e1lvula de controle do atuador el\u00e9trico Rotork para usina de energia, v\u00e1lvula de controle de super alta press\u00e3o - fornecedor de v\u00e1lvulas de esfera de tit\u00e2nio na China, fabricantes de v\u00e1lvula globo criog\u00eanica na China, v\u00e1lvula borboleta C95800 na China, f\u00e1brica de v\u00e1lvula globo selada abaixo, empresa de v\u00e1lvula globo inconel 625 | Fabricante profissional de v\u00e1lvulas<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/pt\/1-2-1500lb-forged-gate-valve-asme-b16-11-socket-weld-connection-gate-valvehigh-pressure-socket-weld-connection-gate-valve-china-manufacturer-titanium-ball-valves-supplier-chinacryogenic-globe.html\/\">V\u00e1lvula de gaveta forjada de 1\/2 \u201d1500LB, v\u00e1lvula de gaveta de conex\u00e3o de solda de soquete ASME B16.11, fabricante de v\u00e1lvula de gaveta de conex\u00e3o de solda de alta press\u00e3o China - fornecedor de v\u00e1lvulas de esfera de tit\u00e2nio na China, fabricantes de v\u00e1lvula globo criog\u00eanica na China, v\u00e1lvula borboleta C95800 na China, globo selado abaixo f\u00e1brica de v\u00e1lvulas, empresa de v\u00e1lvula globo inconel 625 | Fabricante profissional de v\u00e1lvulas<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Como escolher materiais de v\u00e1lvula para condi\u00e7\u00f5es de alta temperatura? As condi\u00e7\u00f5es de trabalho em alta temperatura incluem principalmente temperatura subalta, classe I de alta temperatura, classe de alta temperatura\u2026 <a title=\"Como escolher o material da v\u00e1lvula de alta temperatura\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/pt\/press-seal-gate-valve-bw-900lb-gate-valvechina-pressure-seal-gate-valve-supplier-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabello.html\" aria-label=\"Mais em Como escolher o material da v\u00e1lvula de alta temperatura\">Ler mais<\/a><\/p>","protected":false},"author":2,"featured_media":16591,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1],"tags":[3214,2349,3215,3216,3213,3217],"class_list":["post-9319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-high-temperature-ball-valve","tag-high-temperature-butterfly-valve","tag-high-temperature-check-valve","tag-high-temperature-gate-valve","tag-high-temperature-valve","tag-valve-high-temperature","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/high-pressure-gate-valve.jpg",800,600,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/pt\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":1,"name":"Uncategorized","slug":"uncategorized","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":452,"filter":"raw","cat_ID":1,"category_count":452,"category_description":"","cat_name":"Uncategorized","category_nicename":"uncategorized","category_parent":0}],"tag_info":[{"term_id":3214,"name":"high temperature ball valve","slug":"high-temperature-ball-valve","term_group":0,"term_taxonomy_id":3214,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":2349,"name":"high temperature butterfly valve","slug":"high-temperature-butterfly-valve","term_group":0,"term_taxonomy_id":2349,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":3215,"name":"high temperature check valve","slug":"high-temperature-check-valve","term_group":0,"term_taxonomy_id":3215,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3216,"name":"high temperature gate valve","slug":"high-temperature-gate-valve","term_group":0,"term_taxonomy_id":3216,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3213,"name":"high temperature valve","slug":"high-temperature-valve","term_group":0,"term_taxonomy_id":3213,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":3217,"name":"valve high temperature","slug":"valve-high-temperature","term_group":0,"term_taxonomy_id":3217,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}],"post_tag":[{"value":3214,"label":"high temperature ball valve"},{"value":2349,"label":"high temperature butterfly valve"},{"value":3215,"label":"high temperature check valve"},{"value":3216,"label":"high temperature gate valve"},{"value":3213,"label":"high temperature valve"},{"value":3217,"label":"valve high temperature"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Choose High Temperature Valve Material | 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\/press-seal-gate-valve-bw-900lb-gate-valvechina-pressure-seal-gate-valve-supplier-titanium-ball-valves-supplier-chinacryogenic-globe-valve-manufacturers-chinac95800-butterfly-valve-in-chinabello.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Choose High Temperature Valve Material | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"How to choose valve materials for high temperature conditions? 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