{"id":387,"date":"2018-06-20T08:19:55","date_gmt":"2018-06-20T06:19:55","guid":{"rendered":"http:\/\/www.prometal.dk\/?page_id=387"},"modified":"2019-09-10T15:27:18","modified_gmt":"2019-09-10T13:27:18","slug":"fjederstyrede-sikkerhedsventiler","status":"publish","type":"page","link":"https:\/\/www.prometal.dk\/?page_id=387","title":{"rendered":"Fjederstyrede sikkerhedsventiler"},"content":{"rendered":"<h1>FJEDERSTYREDE SIKKERHEDSVENTILER<\/h1>\n<p>Fjederstyrede sikkerhedsventiler bruges i n\u00e6sten alle industrier, og er kendetegnet med at de \u00e5bner brat. Hermed forst\u00e5s at de lukker hele overtrykket ud p\u00e5 \u00e9n gang og ofte lidt mere \u2013 de \u00e5bner op ca. 5 % f\u00f8r de n\u00e5r settrykket og de lukker f\u00f8rst ca. 5 % efter settrykket.<\/p>\n<p>Den mest basale tommelfingerregel er at dette design <u>ikke<\/u> benyttes n\u00e5r drifttrykket ligger t\u00e6ttere p\u00e5 settrykket end 5 % \u2013 for s\u00e5 vil ventilen \u00e5bne og lukke unyttigt. Dette kaldes i branchen for \u201dchattering\u201d.<\/p>\n<p>Fjederstyrede sikkerhedsventiler f\u00e5s i forskellige designs og modeller, designet til et bredt udvalg af applikationer. De f\u00e5s som full nozzle og semi nozzle. Ved aggressive medier benytter man oftest en full nozzle, \u2013 idet at det her kun er nozzle og disc som uds\u00e6ttes for ber\u00f8ring med mediet \u2013 man kan s\u00e5ledes v\u00e6lge at lave disse to dele i et h\u00f8jtlegeret og medieresistent materiale, og resten af ventilen i et lavere legeret og billigere materiale \u2013 ved en semi nozzle ventil vil flere dele af ventilen og ventilhuset v\u00e6re eksponeret for mediet, hvorfor dette design ofte bruges ved mindre aggressive medier.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-383 size-medium\" src=\"https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler2-175x300.jpg\" alt=\"Her ses en fjederstyret sikkerhedsventil\" width=\"175\" height=\"300\" srcset=\"https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler2-175x300.jpg 175w, https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler2-596x1024.jpg 596w, https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler2.jpg 742w\" sizes=\"auto, (max-width: 175px) 100vw, 175px\" \/><\/p>\n<p>ProMetals fjederstyrede sikkerhedsventiler leveres til flere forskellige standarder:<\/p>\n<p><strong>Europ\u00e6iske standarder:<\/strong><\/p>\n<ul>\n<li>PED 97\/23\/EC &#8211; Pressure Equipment Directive &#8211; Classifies pressure equipment into four categories (I, II, III, IV)<\/li>\n<li>EN4126 &#8211; Safety devices for protection against excessive pressure<\/li>\n<\/ul>\n<p><strong>Internationale (Amerikanske) Standarder:<\/strong><\/p>\n<ul>\n<li>ASME I &#8211; Direct fired pressure vessels<\/li>\n<li>ASME III &#8211; Nuclear power plants<\/li>\n<li>ASME IV &#8211; Heating Boilers<\/li>\n<li>ASME VIII &#8211; Unfired pressure vessels<\/li>\n<li>ANSI\/ASME PTC 25.3 &#8211; Performance test codes<\/li>\n<\/ul>\n<p>ProMetal A\/S er agent for <a href=\"https:\/\/www.global.weir\/products\/valves\/\">Weir<\/a> \/ Sarasin \/ RSBD \u2013 og de er blandt de f\u00e5 producenter i verden som har designs og leverancer i henhold til ASME I og ASME III.<\/p>\n<p>Den oftest benyttede standard til sikkerhedsventiler er ASME VIII.<\/p>\n<p><a href=\"https:\/\/www.global.weir\/brands\/sarasin-rsbd\/\">L\u00e6s mere om Sarasin-RSBD pilot- og fjederstyrede sikkerhedsventiler her<\/a> (du f\u00f8res til en anden hjemmeside).<\/p>\n<p>L\u00e6s ogs\u00e5 om vores <a href=\"https:\/\/www.prometal.dk\/pilotstyrede-sikkerhedsventiler\/\">pilotstyrede sikkerhedsventiler her<\/a>.<\/p>\n<p><a href=\"https:\/\/www.prometal.dk\/kontakt\/\">Kontakt ProMetal for yderligere information om fjederstyrede sikkerhedsventiler.<\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-388 size-medium\" src=\"https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler-154x300.jpg\" alt=\"P\u00e5 dette billede ses en fjederstyret sikkerhedsventil.\" width=\"154\" height=\"300\" srcset=\"https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler-154x300.jpg 154w, https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler-768x1496.jpg 768w, https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler-526x1024.jpg 526w, https:\/\/www.prometal.dk\/wp-content\/uploads\/2018\/06\/ProMetal-Sikkerhedsventiler-Fjederstyrede-sikkerhedsventiler.jpg 848w\" sizes=\"auto, (max-width: 154px) 100vw, 154px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>FJEDERSTYREDE SIKKERHEDSVENTILER Fjederstyrede sikkerhedsventiler bruges i n\u00e6sten alle industrier, og er kendetegnet med at de \u00e5bner brat. Hermed forst\u00e5s at de lukker hele overtrykket ud p\u00e5 \u00e9n gang og ofte lidt mere \u2013 de \u00e5bner op ca. 5 % f\u00f8r de n\u00e5r settrykket og de lukker f\u00f8rst ca. 5 % efter settrykket. Den mest basale&hellip;<\/p>\n<p class=\"more-link\"><a href=\"https:\/\/www.prometal.dk\/?page_id=387\" class=\"themebutton2\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":562,"parent":231,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"tmpl-page-sidebar.php","meta":{"footnotes":""},"class_list":["post-387","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fjederstyrede sikkerhedsventiler - semi og full nozzle - ProMetal A\/S<\/title>\n<meta name=\"description\" content=\"Fjederstyrede sikkerhedsventiler er kendetegnet ved at de lukker hele overtrykket ud p\u00e5 \u00e9n gang. 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