Le si\u00e8ge de la vanne papillon est l'endroit o\u00f9 reposent les pi\u00e8ces mobiles de la vanne lorsqu'elle est en position ferm\u00e9e. Dans les applications de vanne papillon, le disque repose fermement sur le si\u00e8ge pour fermer et sceller la vanne. Le si\u00e8ge est con\u00e7u pour maintenir l\u2019int\u00e9grit\u00e9 du joint sous la chaleur, la friction et la pression de choc du processus.<\/p>\n\n\n\n
Les si\u00e8ges de soupape peuvent-ils \u00eatre remplac\u00e9s ?<\/h2>\n\n\n\n
Les si\u00e8ges de vanne papillon peuvent \u00eatre produits comme si\u00e8ges rempla\u00e7ables, le joint de si\u00e8ge d'origine est affect\u00e9 par des dommages, le si\u00e8ge d'origine sera retir\u00e9, remplac\u00e9 par un nouveau si\u00e8ge peut continuer \u00e0 \u00eatre utilis\u00e9, mais la vulcanisation du si\u00e8ge sur le corps de vanne n'est pas rempla\u00e7able.<\/p>\n\n\n\n
Guide de s\u00e9lection des si\u00e8ges de vanne papillon<\/h2>\n\n\n\n
Le milieu applicable de la vanne papillon \u00e0 si\u00e8ge en caoutchouc est diff\u00e9rent selon les diff\u00e9rents mat\u00e9riaux en caoutchouc. Les mat\u00e9riaux courants pour les si\u00e8ges de soupape en caoutchouc comprennent le caoutchouc EPDM, le caoutchouc nitrile (NBR) et le PTFE.<\/p>\n\n\n\n
Qu'est-ce que le si\u00e8ge EPDM ?<\/h3>\n\n\n\n
Caoutchouc EPDM : EPDM est l\u2019abr\u00e9viation de Ethyl\u00e8ne Propyl\u00e8ne Di\u00e8ne Monom\u00e8re. Compar\u00e9 \u00e0 d\u2019autres caoutchoucs g\u00e9n\u00e9raux, le caoutchouc EPDM est tr\u00e8s rentable. Le mat\u00e9riau EPDM r\u00e9siste au vieillissement, \u00e0 l\u2019exposition au soleil, \u00e0 la chaleur, \u00e0 l\u2019humidit\u00e9 et aux radiations. Il a de bonnes performances d'isolation. Plage de temp\u00e9rature Applicable-20-120 \u2103<\/p>\n\n\n\n
A quoi sert l\u2019EPDM ?<\/h3>\n\n\n\n
La vanne papillon EPDM convient \u00e0 l'eau et \u00e0 la vapeur contenant des acides faibles et des alcalis faibles.<\/p>\n\n\n\n
Qu'est-ce que le si\u00e8ge NBR\u00a0? Qu'est-ce que le si\u00e8ge Buna-N\u00a0?<\/h3>\n\n\n\n
Buna N est le m\u00eame que NBR ou Nitrile. NBR est l'abr\u00e9viation de Caoutchouc Nitrile-Butadi\u00e8ne, ce mat\u00e9riau est r\u00e9sistant \u00e0 l'huile et \u00e0 l'abrasion et poss\u00e8de une bonne r\u00e9sistance \u00e0 l'eau, une bonne \u00e9tanch\u00e9it\u00e9 \u00e0 l'air et d'excellentes propri\u00e9t\u00e9s de liaison. Il est largement utilis\u00e9 dans les ol\u00e9oducs. Les inconv\u00e9nients sont une mauvaise r\u00e9sistance \u00e0 la temp\u00e9rature, une r\u00e9sistance \u00e0 l'ozone, de mauvaises performances d'isolation et une \u00e9lasticit\u00e9 g\u00e9n\u00e9rale. La plage de temp\u00e9rature applicable du caoutchouc nitrile est de 0 \u00e0 80 \u2103.<\/p>\n\n\n\n
A quoi sert le NBR ?<\/h3>\n\n\n\n
La vanne papillon NBR est plus r\u00e9sistante \u00e0 l'huile que l'EPDM et convient \u00e0 la plupart des services de transformation des produits laitiers, alimentaires et sanitaires.<\/p>\n\n\n\n
Qu'est-ce que le si\u00e8ge en PTFE\u00a0?<\/h3>\n\n\n\n
PTFE est l'abr\u00e9viation du terme polyt\u00e9trafluoro\u00e9thyl\u00e8ne, souvent appel\u00e9 t\u00e9flon. Ce fluoropolym\u00e8re thermoplastique pr\u00e9sente un faible frottement, une r\u00e9sistance chimique et une r\u00e9sistance au feu. Le t\u00e9flon est utilis\u00e9 dans la fabrication de vannes papillon \u00e0 si\u00e8ge r\u00e9silient.<\/p>\n\n\n\n
Le PTFE est un mat\u00e9riau rentable dans des applications telles que le traitement chimique ou le p\u00e9trole et le gaz. De par ses qualit\u00e9s isolantes, il est compatible avec les applications \u00e9lectriques. Cependant, il ne doit pas \u00eatre utilis\u00e9 dans des conditions de haute pression. Le PTFE a une plage de temp\u00e9ratures nominales de -50\u00b0F \u00e0 400\u00b0F.<\/p>\n\n\n\n
A quoi sert le PTFE ?<\/h3>\n\n\n\n
La vanne papillon en PTFE est utilis\u00e9e pour le contr\u00f4le du d\u00e9bit dans des environnements corrosifs tels que le transfert d'acides, d'alcalis et d'autres usines de transformation alimentaire corrosives et de produits chimiques dans les usines de transformation chimique. De plus, la vanne papillon papillon en PTFE est \u00e9galement utilis\u00e9e dans les usines p\u00e9trochimiques et d'autres industries telles que les usines d'engrais, de pesticides, de transformation de p\u00e2te \u00e0 papier et de papier et les teintures.<\/p>\n\n\n\n
Buna N VS EPDM, quelle est la diff\u00e9rence entre EPDM et NBR ?<\/h3>\n\n\n\n
L'EPDM r\u00e9siste aux alcalis, aux acides et aux c\u00e9tones. L'EPDM ne convient pas aux applications impliquant des carburants \u00e0 base de p\u00e9trole, du p\u00e9trole et des solvants apolaires, mais le BUNA l'est.<\/p>\n\n\n\n
Bien que l\u2019EPDM et le BUNA soient tous deux r\u00e9sistants \u00e0 l\u2019abrasion et \u00e0 la d\u00e9chirure, l\u2019EPDM est plus r\u00e9sistant aux temp\u00e9ratures \u00e9lev\u00e9es que le BUNA. Lorsque l\u2019on compare l\u2019EPDM au BUNA, l\u2019EPDM est plus adapt\u00e9 aux applications ext\u00e9rieures car il peut r\u00e9sister aux \u00e9l\u00e9ments.<\/p>\n\n\n\n
PTFE VS EPDM, quel est le meilleur EPDM ou PTFE ?<\/h3>\n\n\n\n
L'EPDM est un monom\u00e8re, tandis que le PFTE (T\u00e9flon) est un fluoropolym\u00e8re. Lorsque l\u2019on compare l\u2019EPDM au PFTE, la tol\u00e9rance \u00e0 la temp\u00e9rature et la flexibilit\u00e9 sont les principales diff\u00e9rences. Le PTFE peut r\u00e9sister \u00e0 une plus large gamme de temp\u00e9ratures extr\u00eames, froides et chaudes.<\/p>\n\n\n\n
L'EPDM est un caoutchouc ind\u00e9chirable qui peut r\u00e9sister \u00e0 des mouvements r\u00e9p\u00e9titifs, tandis que le PFTE n'est pas flexible. Le PFTE est id\u00e9al pour les proc\u00e9d\u00e9s p\u00e9troliers, tandis que l'EPDM convient aux applications CVC.<\/p>\n\n\n
![\"\"\/](\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220104123610-61d43f3a1cb57.webp\")
<\/figure>\n<\/div>\n\n\n![\"\"\/](\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220104123610-61d43f3a14ade.webp\")
<\/figure>\n\n\n\n\nBalises associ\u00e9es :<\/h2>\n\n\n\n\n\nSoupape ZECO<\/a>\n\n<\/div>\n\n\n\n\nVanne et robinet \u00e0 boisseau sph\u00e9rique<\/a>\n\n<\/div>\n\n\n\n\nQu'est-ce qu'un robinet \u00e0 soupape ?<\/a>\n\n<\/div>\n\n\n\n\nR\u00e9paration de vannes \u00e0 vanne<\/a>\n\n<\/div>\n\n\n\n\nQu'est-ce qu'un clapet anti-retour axial ?<\/a>\n\n<\/div>\n\n\n\n\n\nFabricant de robinets-vannes \u00e0 commande manuelle<\/a>\n\n<\/div>\n\n\n\n\nQue sont les vannes \u00e0 soupape\u00a0?<\/a>\n\n<\/div>\n\n\n<\/p>\n
<\/p>\n
Dix articles avant et apr\u00e8s<\/p>\n
Introduction de la vanne papillon \u00e0 si\u00e8ge vulcanis\u00e9 \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nInstallation de vanne papillon \u00e0 plaquette \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nPr\u00e9sentation de la vanne papillon \u00e0 cosse \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nL\u2019avantage des vannes papillon \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nProduits brevet\u00e9s Introduction de la vanne papillon LUG \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nCertificat UL & FM \u2013 Actualit\u00e9s de l\u2019industrie \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nVanne papillon \u00e0 cosse Br\u00e8ve introduction \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nLe volume d\u2019exportation de vannes papillon continue d\u2019augmenter \u2013 Actualit\u00e9s de l\u2019industrie \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nRaisons et solutions des fuites des vannes papillon \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\nCe que vous devez savoir sur la vanne papillon \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n<\/p>","protected":false},"excerpt":{"rendered":"
Les vannes papillon ZECO sont g\u00e9n\u00e9ralement class\u00e9es en papillon CI, papillon WCB, papillon en bronze et papillon en acier inoxydable. Les vannes papillon sont disponibles en\u2026 Lire plus<\/a><\/p>","protected":false},"author":2,"featured_media":11718,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1],"tags":[1814,1821,1819,1818,1820,1816,1815,1817,1997,1998,3235],"class_list":["post-11720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-butterfly-valve-seat","tag-epdm-butterfly-valve","tag-epdm-seat","tag-epdm-valve","tag-epdm-vs-nbr","tag-epdm-vs-nitrile","tag-epdm-vs-ptfe","tag-nbr-vs-epdm","tag-pctfe-valve-seat","tag-pctfe-valve-seat-manufacturer","tag-valve-seat-rings","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220104123610-61d43f3a14ade.webp",495,409,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/fr\/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":1814,"name":"butterfly valve seat","slug":"butterfly-valve-seat","term_group":0,"term_taxonomy_id":1814,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":1821,"name":"epdm butterfly valve","slug":"epdm-butterfly-valve","term_group":0,"term_taxonomy_id":1821,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1819,"name":"epdm seat","slug":"epdm-seat","term_group":0,"term_taxonomy_id":1819,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1818,"name":"epdm valve","slug":"epdm-valve","term_group":0,"term_taxonomy_id":1818,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1820,"name":"epdm vs nbr","slug":"epdm-vs-nbr","term_group":0,"term_taxonomy_id":1820,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1816,"name":"epdm vs nitrile","slug":"epdm-vs-nitrile","term_group":0,"term_taxonomy_id":1816,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1815,"name":"epdm vs ptfe","slug":"epdm-vs-ptfe","term_group":0,"term_taxonomy_id":1815,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1817,"name":"nbr vs epdm","slug":"nbr-vs-epdm","term_group":0,"term_taxonomy_id":1817,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1997,"name":"PCTFE Valve Seat","slug":"pctfe-valve-seat","term_group":0,"term_taxonomy_id":1997,"taxonomy":"post_tag","description":"\r\n\r\n\r\n\r\nGET PCTFE VALVE SEAT PRICE<\/strong><\/a>\r\n\r\n\r\n\r\n\r\nWhat is PCTFE Material?<\/h2>\r\n\r\n\r\n\r\n\r\nPCTFE (Polychlorotrifluoroethylene) PCTFE (Polychlorotrifluoroethylene) is a homopolymer of Chlorotrifluoroethylene. PCTFE is a unique fluoropolymer that is capable of maintaining its physical properties at exceptionally low operating temperatures.\r\n\r\n\r\n\r\n\r\n\r\nPCTFE has excellent chemical resistance, radiation resistance, and flammability characteristics. The material has a useful temperature range of -400\u00b0F to 380\u00b0F. PCTFE is resistant to cold flow and it has the lowest coefficient of thermal expansion of any unfilled fluoropolymer. These characteristics make it an excellent choice when dimensional stability is critical.\r\n\r\n\r\n\r\n\r\n\r\nPCTFE is often used for aerospace applications when chemical resistance, a broad operating temperature range, and low flammability are required. It is also extensively used for cryogenic valve applications.\r\n\r\n\r\n\r\n\r\nKey Properties of PCTFE Material<\/h2>\r\n\r\n\r\n\r\n\r\n \t- Dimensionally stable, rigid, and resistant to cold flow<\/li>\r\n \t
- Very low gas permeation and outgassing<\/li>\r\n \t
- Near zero moisture absorption<\/li>\r\n \t
- Excellent chemical resistance<\/li>\r\n \t
- High compression strength<\/li>\r\n \t
- Low deformation under load<\/li>\r\n \t
- Non-flammable<\/li>\r\n \t
- Temperature range: -400\u00b0 to 380\u00b0F<\/li>\r\n \t
- Radiation Resistance<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n
<\/p>\n
<\/p>\n
Dix articles avant et apr\u00e8s<\/p>\n
Introduction de la vanne papillon \u00e0 si\u00e8ge vulcanis\u00e9 \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Installation de vanne papillon \u00e0 plaquette \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Pr\u00e9sentation de la vanne papillon \u00e0 cosse \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n L\u2019avantage des vannes papillon \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Produits brevet\u00e9s Introduction de la vanne papillon LUG \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Certificat UL & FM \u2013 Actualit\u00e9s de l\u2019industrie \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Vanne papillon \u00e0 cosse Br\u00e8ve introduction \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Le volume d\u2019exportation de vannes papillon continue d\u2019augmenter \u2013 Actualit\u00e9s de l\u2019industrie \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Raisons et solutions des fuites des vannes papillon \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n Ce que vous devez savoir sur la vanne papillon \u2013 Informations sur les vannes industrielles \u2013 Actualit\u00e9s \u2013 Zeco Valve<\/a><\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" Les vannes papillon ZECO sont g\u00e9n\u00e9ralement class\u00e9es en papillon CI, papillon WCB, papillon en bronze et papillon en acier inoxydable. Les vannes papillon sont disponibles en\u2026 Lire plus<\/a><\/p>","protected":false},"author":2,"featured_media":11718,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1],"tags":[1814,1821,1819,1818,1820,1816,1815,1817,1997,1998,3235],"class_list":["post-11720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-butterfly-valve-seat","tag-epdm-butterfly-valve","tag-epdm-seat","tag-epdm-valve","tag-epdm-vs-nbr","tag-epdm-vs-nitrile","tag-epdm-vs-ptfe","tag-nbr-vs-epdm","tag-pctfe-valve-seat","tag-pctfe-valve-seat-manufacturer","tag-valve-seat-rings","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220104123610-61d43f3a14ade.webp",495,409,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/fr\/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":1814,"name":"butterfly valve seat","slug":"butterfly-valve-seat","term_group":0,"term_taxonomy_id":1814,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":1821,"name":"epdm butterfly valve","slug":"epdm-butterfly-valve","term_group":0,"term_taxonomy_id":1821,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1819,"name":"epdm seat","slug":"epdm-seat","term_group":0,"term_taxonomy_id":1819,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1818,"name":"epdm valve","slug":"epdm-valve","term_group":0,"term_taxonomy_id":1818,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1820,"name":"epdm vs nbr","slug":"epdm-vs-nbr","term_group":0,"term_taxonomy_id":1820,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1816,"name":"epdm vs nitrile","slug":"epdm-vs-nitrile","term_group":0,"term_taxonomy_id":1816,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1815,"name":"epdm vs ptfe","slug":"epdm-vs-ptfe","term_group":0,"term_taxonomy_id":1815,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1817,"name":"nbr vs epdm","slug":"nbr-vs-epdm","term_group":0,"term_taxonomy_id":1817,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1997,"name":"PCTFE Valve Seat","slug":"pctfe-valve-seat","term_group":0,"term_taxonomy_id":1997,"taxonomy":"post_tag","description":"\r\n\r\n\r\n\r\nGET PCTFE VALVE SEAT PRICE<\/strong><\/a>\r\n\r\n\r\n\r\n\r\nWhat is PCTFE Material?<\/h2>\r\n\r\n\r\n\r\n\r\nPCTFE (Polychlorotrifluoroethylene) PCTFE (Polychlorotrifluoroethylene) is a homopolymer of Chlorotrifluoroethylene. PCTFE is a unique fluoropolymer that is capable of maintaining its physical properties at exceptionally low operating temperatures.\r\n\r\n\r\n\r\n\r\n\r\nPCTFE has excellent chemical resistance, radiation resistance, and flammability characteristics. The material has a useful temperature range of -400\u00b0F to 380\u00b0F. PCTFE is resistant to cold flow and it has the lowest coefficient of thermal expansion of any unfilled fluoropolymer. These characteristics make it an excellent choice when dimensional stability is critical.\r\n\r\n\r\n\r\n\r\n\r\nPCTFE is often used for aerospace applications when chemical resistance, a broad operating temperature range, and low flammability are required. It is also extensively used for cryogenic valve applications.\r\n\r\n\r\n\r\n\r\n
Key Properties of PCTFE Material<\/h2>\r\n\r\n\r\n\r\n
\r\n \t