{"id":30,"count":2,"description":"<!-- wp:heading -->\r\n<h2 id=\"h-valves-in-oxygen-service\">Vannes dans le service d&#039;oxyg\u00e8ne<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nL&#039;oxyg\u00e8ne a des propri\u00e9t\u00e9s chimiques g\u00e9n\u00e9ralement actives. C&#039;est une substance fortement oxydante et combustible qui peut se combiner avec la plupart des \u00e9l\u00e9ments pour former des oxydes, \u00e0 l&#039;exception de l&#039;or, de l&#039;argent et des gaz inertes tels que l&#039;h\u00e9lium, le n\u00e9on, l&#039;argon et le krypton. Une explosion se produit lorsque l&#039;oxyg\u00e8ne est m\u00e9lang\u00e9 \u00e0 des gaz combustibles (ac\u00e9tyl\u00e8ne, hydrog\u00e8ne, m\u00e9thane, etc.) dans une certaine proportion ou lorsque la vanne du tuyau rencontre un incendie soudain. Le d\u00e9bit d&#039;oxyg\u00e8ne dans le syst\u00e8me de canalisations change au cours du transport de l&#039;oxyg\u00e8ne gazeux, l&#039;Association europ\u00e9enne du gaz industriel (EIGA) a d\u00e9velopp\u00e9 la norme IGC Doc 13\/12E \u00ab Syst\u00e8mes de canalisations et de tuyauteries d&#039;oxyg\u00e8ne \u00bb qui divise les conditions de travail de l&#039;oxyg\u00e8ne en fonction de \u00ab l&#039;impact \u00bb et \u00ab sans impact \u00bb. L&#039;\u00ab impact \u00bb est une occasion dangereuse car il est facile de stimuler l&#039;\u00e9nergie, provoquant une combustion et une explosion. La valve \u00e0 oxyg\u00e8ne est une \u00ab occasion d\u2019impact \u00bb typique.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nLa vanne \u00e0 oxyg\u00e8ne est un type de vanne sp\u00e9ciale con\u00e7ue pour un pipeline d&#039;oxyg\u00e8ne et a \u00e9t\u00e9 largement utilis\u00e9e dans les industries m\u00e9tallurgiques, p\u00e9troli\u00e8res, chimiques et autres impliquant l&#039;oxyg\u00e8ne. Le mat\u00e9riau de la vanne \u00e0 oxyg\u00e8ne est limit\u00e9 \u00e0 la pression de service et au d\u00e9bit pour \u00e9viter la collision de particules et d&#039;impuret\u00e9s dans le pipeline. Par cons\u00e9quent, l&#039;ing\u00e9nieur doit pleinement prendre en compte la friction, l&#039;\u00e9lectricit\u00e9 statique, l&#039;inflammation des non-m\u00e9taux, les polluants possibles (corrosion de la surface de l&#039;acier au carbone) et d&#039;autres facteurs lors de la s\u00e9lection d&#039;une vanne \u00e0 oxyg\u00e8ne.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Propri\u00e9t\u00e9s de l&#039;oxyg\u00e8ne<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>La concentration normale dans l&#039;air est 21%<\/li>\r\n \t<li>Incolore, inodore et insipide.<\/li>\r\n \t<li>Ne peut pas \u00eatre d\u00e9tect\u00e9 par les sens humains<\/li>\r\n \t<li>Non inflammable mais entretient et acc\u00e9l\u00e8re la combustion.<\/li>\r\n \t<li>Mati\u00e8res inflammables, y compris certaines mati\u00e8res qui sont normalement relativement<\/li>\r\n \t<li>Ininflammable dans l&#039;air, br\u00fble tr\u00e8s rapidement \u00e0 des concentrations \u00e9lev\u00e9es d&#039;oxyg\u00e8ne.<\/li>\r\n \t<li>Trois \u00e9l\u00e9ments n\u00e9cessaires pour un feu d&#039;oxyg\u00e8ne sont une source d&#039;inflammation, de l&#039;oxyg\u00e8ne et un mat\u00e9riau inflammable (carburant) \u2013 connu sous le nom de \u00ab triangle du feu \u00bb.<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Mat\u00e9riau utilis\u00e9 dans la valve \u00e0 oxyg\u00e8ne<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nOrganic materials have ignition temperatures below those of metals. The use of organic materials in contact with oxygen should be avoided, particularly when the material is directly in the flow stream. When an organic material must be used for parts such as valve seats, diaphragms, or packing, it is preferable to select a material with the highest ignition temperature, the lowest specific heat, and the necessary mechanical properties.\r\nLubricants and sealing compounds should be used only if they are suitable for oxygen service and then used sparingly. Ordinary petroleum lubricants are not satisfactory and are particularly hazardous because of their high heat of combustion and high rate of reaction.\r\nThe approximate ignition temperatures in 138 bar (2000 psig) oxygen for a few organic materials are shown in table 1.\r\nTable 1. Typical Ignition Temperatures\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:table {\"className\":\"is-style-stripes\"} -->\r\n<figure class=\"wp-block-table is-style-stripes\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>MAT\u00c9RIEL<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">TEMP\u00c9RATURE D&#039;INFLAMMATION TYPIQUE EN 138 BAR (2000 PSIG) D&#039;OXYG\u00c8NE<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>PTFE et PCTFE<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">468<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>70% PTFE charg\u00e9 bronze<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">468<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Fluoro\u00e9lastom\u00e8re<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Nylon<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">210<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Poly\u00e9thyl\u00e8ne<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">182<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Chloropr\u00e8ne et Nitrile<\/td>\r\n<td class=\"has-text-align-center\" data-align=\"center\">149<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n<!-- \/wp:table -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n<strong>Les m\u00e9taux<\/strong>\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nLe choix des m\u00e9taux doit \u00eatre bas\u00e9 sur leur r\u00e9sistance \u00e0 l\u2019inflammation et leur vitesse de r\u00e9action. Vous trouverez ci-dessous une comparaison de ces deux propri\u00e9t\u00e9s pour certains mat\u00e9riaux de vannes couramment utilis\u00e9s.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n<strong>R\u00e9sistance \u00e0 l&#039;inflammation dans l&#039;oxyg\u00e8ne<\/strong>\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nLes mat\u00e9riaux sont class\u00e9s du plus difficile \u00e0 enflammer au plus facile \u00e0 enflammer.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:list {\"ordered\":true} -->\r\n<ol>\r\n \t<li>Cuivre, alliages de cuivre et alliages nickel-cuivre \u2013 les plus r\u00e9sistants<\/li>\r\n \t<li>Acier inoxydable (s\u00e9rie 300)<\/li>\r\n \t<li>Acier Carbone<\/li>\r\n \t<li>Aluminium \u2010\u2010 le moins r\u00e9sistant<\/li>\r\n<\/ol>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n<strong>Vitesse de r\u00e9action<\/strong>\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nLes mat\u00e9riaux sont class\u00e9s par ordre d\u00e9croissant du taux de combustion le plus lent au taux de combustion le plus rapide.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:list {\"ordered\":true} -->\r\n<ol>\r\n \t<li>Le cuivre, les alliages de cuivre et les alliages nickel-cuivre ne propagent normalement pas la combustion.<\/li>\r\n \t<li>Acier Carbone<\/li>\r\n \t<li>Acier inoxydable (s\u00e9rie 300)<\/li>\r\n \t<li>L&#039;aluminium \u2010\u2010 br\u00fble tr\u00e8s rapidement<\/li>\r\n<\/ol>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nNotez que l\u2019acier inoxydable, une fois enflamm\u00e9, br\u00fble plus rapidement que l\u2019acier au carbone. N\u00e9anmoins, les nuances aust\u00e9nitiques (s\u00e9rie 300) d&#039;acier inoxydable sont consid\u00e9r\u00e9es comme bien meilleures que l&#039;acier au carbone en raison de leur haute r\u00e9sistance \u00e0 l&#039;inflammation.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"https:\/\/zecovalve.com\/fr\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>OBTENIR LE PRIX DE LA VALVE \u00c0 OXYG\u00c8NE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2>\u00c0 quel point l&#039;oxyg\u00e8ne est-il dangereux<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nL&#039;oxyg\u00e8ne n&#039;est pas combustible \u00e0 lui seul. Cependant, en cas de combustion, une teneur \u00e9lev\u00e9e en oxyg\u00e8ne signifie que les mat\u00e9riaux combustibles br\u00fblent beaucoup plus rapidement. L&#039;impact des particules, la pressurisation rapide ou la compression des mat\u00e9riaux peuvent entra\u00eener un \u00e9chauffement susceptible de provoquer une combustion. La contamination et l&#039;\u00e9nergie m\u00e9canique telle que la friction peuvent \u00e9galement provoquer une inflammation et provoquer des incendies rapides et chauds lorsqu&#039;une plus grande quantit\u00e9 d&#039;oxyg\u00e8ne est pr\u00e9sente. Plus la concentration en oxyg\u00e8ne est \u00e9lev\u00e9e, plus le risque de combustion est grand.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nLarson a soulign\u00e9 que, m\u00eame si certaines pr\u00e9cautions doivent \u00eatre prises avec l&#039;oxyg\u00e8ne liquide, il est encore plus important d&#039;\u00eatre vigilant lorsqu&#039;on travaille avec celui-ci \u00e0 l&#039;\u00e9tat gazeux.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Minimiser les risques<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nPour minimiser le risque d&#039;incendie, il est important de choisir des mat\u00e9riaux hautement compatibles pour les vannes, qu&#039;il s&#039;agisse de m\u00e9taux ou de mat\u00e9riaux souples. Il est \u00e9galement important de minimiser les m\u00e9canismes d&#039;allumage. Cela peut \u00eatre fait en minimisant les biens textiles et en limitant l\u2019utilisation de lubrifiants. Il est \u00e9galement essentiel d&#039;utiliser les meilleures pratiques, de la conception \u00e0 la fabrication, en passant par l&#039;acheminement du produit sur le site et son exploitation.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Comment choisir une valve utilis\u00e9e pour l\u2019oxyg\u00e8ne ?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nCertains projets interdisent explicitement l&#039;utilisation de vannes \u00e0 vanne dans les conduites d&#039;oxyg\u00e8ne dont la pression de conception est sup\u00e9rieure \u00e0 0,1 MPa. En effet, la surface d&#039;\u00e9tanch\u00e9it\u00e9 des vannes sera endommag\u00e9e par le frottement lors du mouvement relatif (c&#039;est-\u00e0-dire l&#039;ouverture\/fermeture de la vanne), ce qui fera tomber de petites \u00ab\u00a0particules de poudre de fer\u00a0\u00bb de la surface d&#039;\u00e9tanch\u00e9it\u00e9 et prendront facilement feu. De m\u00eame, la conduite d&#039;oxyg\u00e8ne d&#039;un autre type de valve explosera \u00e9galement au moment o\u00f9 la diff\u00e9rence de pression entre les deux c\u00f4t\u00e9s de la valve est importante et que la valve s&#039;ouvre rapidement.\r\n\r\n<!-- \/wp:paragraph -->","link":"https:\/\/zecovalve.com\/fr\/tag\/oxygen","name":"oxyg\u00e8ne","slug":"oxygen","taxonomy":"post_tag","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Oxygen Ball Valve - Choose Right Oxygen 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\/fr\/tag\/oxygen\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oxygen Ball Valve - Choose Right Oxygen Valve | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"Valves in Oxygen Service  Oxygen has typically active chemical properties. It is a strong oxidizing and combustible substance and can combine with most elements to form oxides except for gold, silver, and inert gases such as helium, neon, argon, and krypton. An explosion occurs when oxygen is mixed with combustible gases (acetylene, hydrogen, methane, etc.) in a certain proportion or when the pipe valve meets a sudden fire. The oxygen flow in the pipeline system change in the process of oxygen gas transportation, the European Industrial Gas Association (EIGA) developed the standard IGC Doc 13\/12E \u201cOxygen Pipeline and Piping Systems\u201d divided the Oxygen working conditions for \u201cimpact\u201d and \u201cnon-impact\u201d. The \u201cimpact \u201d is a dangerous occasion because it is easy to stimulate energy, causing combustion and explosion. The oxygen valve is the typical \u201cimpact occasion\u201d.  Oxygen valve is a type of special valve designed for an oxygen pipeline and has been widely used in metallurgy, petroleum, chemical, and other industries involving oxygen. The material of the oxygen valve is limited to working pressure and flow rate to prevent the collision of particles and impurities in the pipeline. Therefore, the engineer should fully consider friction, static electricity, non-metal ignition, possible pollutants (carbon steel surface corrosion), and other factors when selecting an oxygen valve.  Oxygen Properties  The normal concentration in air is 21% Colorless, odorless, and tasteless. Cannot be detected by the human senses Not flammable but supports and accelerates combustion. Flammable materials, including some materials that are normally relatively Non-flammable in air, burn very rapidly in high oxygen concentrations. Three elements necessary for an oxygen fire are an ignition source, oxygen, and flammable material (fuel) \u2013 known as the \u201cfire triangle\u201d  Material Used in Oxygen Valve  Organic materials have ignition temperatures below those of metals. The use of organic materials in contact with oxygen should be avoided, particularly when the material is directly in the flow stream. When an organic material must be used for parts such as valve seats, diaphragms, or packing, it is preferable to select a material with the highest ignition temperature, the lowest specific heat, and the necessary mechanical properties. Lubricants and sealing compounds should be used only if they are suitable for oxygen service and then used sparingly. Ordinary petroleum lubricants are not satisfactory and are particularly hazardous because of their high heat of combustion and high rate of reaction. The approximate ignition temperatures in 138 bar (2000 psig) oxygen for a few organic materials are shown in table 1. Table 1. Typical Ignition Temperatures    MATERIAL TYPICAL IGNITION TEMPERATURE IN 138 BAR (2000 PSIG) OXYGEN  PTFE and PCTFE 468  70% Bronze\u2010filled PTFE 468  Fluoroelastomer 316  Nylon 210  Polyethylene 182  Chloroprene and Nitrile 149    Metals  The selection of metals should be based on their resistance to ignition and rate of reaction. Following is a comparison of these two properties for some commonly used valve materials.  Resistance to Ignition in Oxygen  Materials are listed in order from hardest to ignite to easiest to ignite.  Copper, copper alloys, and nickel\u2010copper alloys \u2010\u2010 most resistant Stainless steel (300 series) Carbon steel Aluminum \u2010\u2010 least resistant  Rate of Reaction  Materials are listed in order from the slowest rate of combustion to the most rapid rate of combustion.  Copper, copper alloys, and nickel\u2010copper alloys \u2010\u2010 do not normally propagate combustion Carbon steel Stainless steel (300 series) Aluminum \u2010\u2010 burns very rapidly  Note that stainless steel, once ignited, burns more rapidly than carbon steel. Nevertheless, the austenitic grades (300 series) of stainless steel are considered to be much better than carbon steel because of their high resistance to ignition.  GET OXYGEN VALVE PRICE  How Dangerous is Oxygen  Oxygen is not combustible alone. However, if there is a combustion event, high-oxygen content means that combustible materials do burn much faster. Particle impact, rapid pressurization, or compression of materials can result in heating that could cause combustion. Contamination and mechanical energy such as friction can also cause ignition and result in fast, hot fires when more oxygen is present. The higher the concentration of oxygen, the greater the risk of combustion.  Larson pointed out that, while certain precautions must be taken with liquid oxygen, it is even more important to be vigilant when working with it in the gaseous state.  Minimizing Risk  To minimize the risk of fire, it is important to choose highly compatible materials for valves\u2014both metals and soft goods. It is also important to minimize ignition mechanisms. That can be done by minimizing soft goods and limiting the use of lubricants. It is also essential to utilizing best practices\u2014from design to manufacture, to getting the product to the site, to operating it.  How to choose a valve used for oxygen?  Some projects explicitly prohibit gate valves from being used in oxygen pipelines with design pressure greater than 0.1mpa. This is because the sealing surface of gate valves will be damaged by friction in relative motion (i.e. the opening\/closing of the valve), which causes small \u201ciron powder particles\u201d to fall off from the sealing surface and easily catch fire. Similarly, the oxygen line of another type of valve will also explode at the moment when the pressure difference between the two sides of the valve is large and the valve opens quickly.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/fr\/tag\/oxygen\" \/>\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\":\"fr-FR\"},{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/oxygen#webpage\",\"url\":\"https:\/\/zecovalve.com\/tag\/oxygen\",\"name\":\"Oxygen Ball Valve - Choose Right Oxygen Valve | ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/tag\/oxygen#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/tag\/oxygen\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/tag\/oxygen#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\/oxygen\",\"url\":\"https:\/\/zecovalve.com\/tag\/oxygen\",\"name\":\"oxygen\"}}]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/fr\/wp-json\/wp\/v2\/tags\/30","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zecovalve.com\/fr\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/zecovalve.com\/fr\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/zecovalve.com\/fr\/wp-json\/wp\/v2\/posts?tags=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}