{"id":377,"date":"2026-07-02T14:07:13","date_gmt":"2026-07-02T12:07:13","guid":{"rendered":"https:\/\/wehberg.001.nrdwnd.de\/faq-2\/"},"modified":"2026-09-05T11:01:11","modified_gmt":"2026-09-05T09:01:11","slug":"faq","status":"publish","type":"page","link":"https:\/\/wehberg.001.nrdwnd.de\/en\/faq\/","title":{"rendered":"Rupture Disc Knowledge"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"377\" class=\"elementor elementor-377 elementor-28\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-531c180 e-flex e-con-full ws-tg ws-tg-hc e-con e-parent\" data-id=\"531c180\" data-element_type=\"container\" data-e-type=\"container\" id=\"wissen-hero\">\n\t\t<div class=\"elementor-element elementor-element-4f53044 e-flex e-con-full ws-tg-hc__card e-con e-parent\" data-id=\"4f53044\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-d114142 e-flex e-con-full ws-tg-hc__text e-con e-parent\" data-id=\"d114142\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fefacae ws-tg-hc__eye elementor-widget elementor-widget-heading\" data-id=\"fefacae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Wehberg Safety \u00b7 Knowledge<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-820d30c ws-tg-hc__h elementor-widget elementor-widget-heading\" data-id=\"820d30c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Rupture Discs 101.<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c3663d ws-tg-hc__crumb elementor-widget elementor-widget-heading\" data-id=\"7c3663d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/wehberg.001.nrdwnd.de\/en\/\">Home<\/a> &nbsp;\/&nbsp; Knowledge<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-94a840f e-flex e-con-full ws-tg ws-fq-druck e-con e-parent\" data-id=\"94a840f\" data-element_type=\"container\" data-e-type=\"container\" id=\"druckregler\">\n\t\t<div class=\"elementor-element elementor-element-17e1c19 e-flex e-con-full ws-tg-wrap e-con e-parent\" data-id=\"17e1c19\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-ed35af8 e-flex e-con-full ws-fq-druck__in e-con e-parent\" data-id=\"ed35af8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-c3fb292 e-flex e-con-full ws-fq-druck__copy e-con e-parent\" data-id=\"c3fb292\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d38e6e8 ws-tg-eyebrow elementor-widget elementor-widget-heading\" data-id=\"d38e6e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">\/ How it works<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-03387b7 ws-fq-druck__h elementor-widget elementor-widget-heading\" data-id=\"03387b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">A rupture disc has exactly one job: to open when it matters.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-80a9c2e ws-fq-druck__p elementor-widget elementor-widget-text-editor\" data-id=\"80a9c2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>It protects vessels and systems against harmful overpressure or vacuum. When the nominal pressure is reached, the bursting element ruptures within milliseconds, the medium escapes and the system is relieved. Try it yourself.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ebee1d4 e-flex e-con-full ws-fq-druck__stage e-con e-parent\" data-id=\"ebee1d4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0595338 elementor-widget elementor-widget-html\" data-id=\"0595338\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"ws-fq-canvas\" data-base=\"https:\/\/wehberg.001.nrdwnd.de\/wp-content\/uploads\/ws-intro\/\" data-bar=\"200\"><canvas width=\"1080\" height=\"602\" aria-label=\"Rupture disc under pressure\"><\/canvas><div class=\"ws-fq-canvas__glow\"><\/div><div class=\"ws-fq-canvas__flash\"><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6e99a70 e-flex e-con-full ws-fq-druck__ctl e-con e-parent\" data-id=\"6e99a70\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ca69b5e elementor-widget elementor-widget-html\" data-id=\"ca69b5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"ws-fq-ctl\"><div class=\"ws-fq-ctl__row\"><span class=\"ws-fq-ctl__lab\">Pressure<\/span><span class=\"ws-fq-ctl__val\">0<small>bar<\/small><\/span><\/div><div class=\"ws-fq-ctl__track\"><input type=\"range\" min=\"0\" max=\"100\" step=\"0.5\" value=\"0\" aria-label=\"Set pressure\"><div class=\"ws-fq-ctl__scale\"><i>0 bar<\/i><i>50<\/i><i>100<\/i><i>150<\/i><i>Burst range \u00b110 %<\/i><\/div><\/div><p class=\"ws-fq-ctl__hint\">Drag the slider to the right. The disc domes as the pressure rises \u2013 and opens at nominal pressure.<\/p><button type=\"button\" class=\"ws-fq-ctl__reset\">Insert a new disc<\/button><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-60af3ba e-flex e-con-full ws-tg ws-fq-wissen e-con e-parent\" data-id=\"60af3ba\" data-element_type=\"container\" data-e-type=\"container\" id=\"fragen\">\n\t\t<div class=\"elementor-element elementor-element-b0f7ac5 e-flex e-con-full ws-tg-wrap e-con e-parent\" data-id=\"b0f7ac5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-b2cad0f e-flex e-con-full ws-fq-wissen__head e-con e-parent\" data-id=\"b2cad0f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1d8aa81 e-flex e-con-full ws-fq-wissen__title e-con e-parent\" data-id=\"1d8aa81\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e036035 ws-tg-eyebrow elementor-widget elementor-widget-heading\" data-id=\"e036035\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">\/ 18 questions, 18 answers<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e77550 ws-fq-wissen__h elementor-widget elementor-widget-heading\" data-id=\"2e77550\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The questions we are asked most often.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c42769 ws-fq-wissen__p elementor-widget elementor-widget-text-editor\" data-id=\"3c42769\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>From the definition to the applicable standards: the essentials of rupture discs, the way our customers need them most often. Use the list on the left to jump straight to a question.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a596bae e-flex e-con-full ws-tg-wrap ws-fq-wissen__row e-con e-parent\" data-id=\"a596bae\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-21940be e-flex e-con-full ws-fq-wissen__left e-con e-parent\" data-id=\"21940be\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-66fc641 elementor-widget elementor-widget-html\" data-id=\"66fc641\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- Frage-Panel wird automatisch aus den Fragen rechts erzeugt -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-651b9b8 e-flex e-con-full ws-fq-wissen__right e-con e-parent\" data-id=\"651b9b8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-3b50f73 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"3b50f73\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-1\">\n\t\t\t\t<div class=\"elementor-element elementor-element-45266b3 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"45266b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is a rupture disc?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d4f1371 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"d4f1371\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>A rupture disc is a pressure safety device that protects pressurised vessels (e.g. gas cylinders) or systems (e.g. pumps) against harmful overpressure or vacuum. It does so by opening the bursting element in a defined manner within milliseconds once a critical pressure condition is reached. The enclosed medium (gas or liquid) escapes through the opening created, relieving the system immediately.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a7c2d32 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"a7c2d32\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-2\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ef2fb81 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"ef2fb81\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Is a rupture disc always a disc?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-574fcb6 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"574fcb6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The term &#8220;rupture disc&#8221; is a common umbrella term for bursting elements of various designs, such as discs, caps, domes or pre-bulged membranes. Even when the bursting element is installed in a holder or housing (screw-in solution, plug), the term &#8220;rupture disc&#8221; is frequently used.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dd8e49d e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"dd8e49d\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-3\">\n\t\t\t\t<div class=\"elementor-element elementor-element-73eb083 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"73eb083\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is the \"nominal pressure\" of a rupture disc?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7dc38cb ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"7dc38cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The &#8220;nominal pressure&#8221; of a rupture disc is its specified response or burst pressure, i.e. the pressure at which the disc is designed to open. Due to the material, the nominal pressure is always stated with a tolerance, e.g. \u00b1 10 %. This creates a corridor within which the rupture disc must open as intended.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-885325c e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"885325c\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-4\">\n\t\t\t\t<div class=\"elementor-element elementor-element-913ff73 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"913ff73\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What determines the burst pressure of a rupture disc?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cd5a8e ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"5cd5a8e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The burst pressure of a rupture disc depends on the following factors:<\/p><ul><li>Material<\/li><li>Material properties<\/li><li>Material thickness<\/li><li>Diameter of the opening<\/li><li>Burst geometry<\/li><li>Temperature<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-288ef82 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"288ef82\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-5\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7cc37b8 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"7cc37b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What are rupture discs made of?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a88c94 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"8a88c94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Our rupture discs are made exclusively from corrosion-resistant materials such as stainless steel, nickel, nickel-based alloys (e.g. Inconel or Hastelloy), tantalum, or in combination with corrosion-resistant plastics such as FEP and PTFE.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a176602 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"a176602\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-6\">\n\t\t\t\t<div class=\"elementor-element elementor-element-adac2e4 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"adac2e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why are there so many material types?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-89516d7 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"89516d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The demands placed on bursting elements in practice are diverse. It is not only the required burst pressures that differ. The specific properties of the media to be protected, as well as other factors such as unusual ambient temperatures, create individual requirements that have to be taken into account. The range of materials available to us allows us to respond precisely to these different requirements. In this way an optimal solution and reliable protection can be found for almost every application.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f7df3d0 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"f7df3d0\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-7\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0aee18a ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"0aee18a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Is the burst pressure of a rupture disc the same at every temperature?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f90b8b4 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"f90b8b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Because of the physical properties of the materials used, the response pressure of a rupture disc changes with temperature. As a rule, the response pressure decreases as the temperature rises. Different materials react differently to temperature changes \u2013 nickel versus stainless steel, for example. These differing material properties can be used to advantage when selecting rupture discs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-04ce1f3 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"04ce1f3\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-8\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff855d0 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"ff855d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How loud is a rupture disc when it bursts?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a09bf6d ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"a09bf6d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The noise level on bursting depends mainly on the pressure, the medium and the diameter of the opening. The range extends from a quiet &#8220;pop&#8221; to an extremely loud bang.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b23f2db e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"b23f2db\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-9\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f0c907f ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"f0c907f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is the difference between a rupture disc and a safety or pressure relief valve?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-30b7eea ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"30b7eea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>A safety or pressure relief valve is a protective device that opens automatically when the set pressure is reached and relieves pressure by venting the medium to atmosphere. Once the pressure falls below the set point, the valve closes again automatically. With a rupture disc system, the relief cross-section remains permanently open after activation and the rupture disc has to be replaced. Relief valves are used where recurring overpressure is to be expected (the normal case). Rupture discs, on the other hand, are intended for systems in which overpressure is an unplanned exception that needs to be safeguarded against.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2744534 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"2744534\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-10\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d80e2bf ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"d80e2bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is a puncture disc and what is a burst foil?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-120559f ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"120559f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Puncture discs and burst foils differ from rupture discs in their function and purpose.<\/p><p>A puncture disc is a rupture disc that acts as a pressure safety device on the one hand and, on the other, is deliberately opened mechanically (punctured) by the system or by a user in certain situations in order to release the enclosed medium for a defined purpose.<\/p><p>A burst foil, by contrast, is not a pressure safety device. Its only purpose is to enclose a medium in an unpressurised environment (a container). As soon as the system is pressurised as intended, the foil bursts and the medium can escape.<\/p><p>Puncture discs and burst foils are used in foam fire extinguishers, for example. The main chamber of the container holds the extinguishing foam, which is retained by a burst foil. The extinguisher also contains a CO<sub>2<\/sub> cartridge protected by a puncture disc. When the extinguisher is used, this puncture disc is opened by the initial actuation of the extinguisher, the CO<sub>2<\/sub> pressurises the container, the burst foil bursts and the foam can be discharged.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-87be58e e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"87be58e\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-11\">\n\t\t\t\t<div class=\"elementor-element elementor-element-21f1fc2 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"21f1fc2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How big are rupture discs and how thick?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ee082d ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"4ee082d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The size and thickness of a rupture disc depend on the application. The smallest rupture discs have a diameter of a few millimetres, the largest of more than one metre. The thickness varies between a few micrometres (\u00b5m) and several millimetres.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2c79354 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"2c79354\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-12\">\n\t\t\t\t<div class=\"elementor-element elementor-element-374f3ba ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"374f3ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Which pressures can be protected?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f6305c ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"9f6305c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Rupture discs from Wehberg Safety can protect pressures between 3 and 7,000 bar.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0479d8d e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"0479d8d\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-13\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f4f363f ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"f4f363f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What has to be considered when protecting hot, toxic or contaminated media?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55699a4 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"55699a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>In the case of hot, toxic or contaminated media, the plant operator must ensure controlled discharge of the medium in the event of bursting, using suitable equipment such as piping and collection vessels. With our Hybrid System\u00ae models, Wehberg Safety offers standard solutions for precisely this field of application.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ddb5d22 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"ddb5d22\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-14\">\n\t\t\t\t<div class=\"elementor-element elementor-element-50afe6e ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"50afe6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Are there standards and regulations for rupture discs and pressure vessels?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b1c509 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"7b1c509\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Pressure systems, pressure vessels, safety valves and bursting disc safety devices are subject to technical regulations and rules that are continuously adapted to the state of the art. Important standards and regulations in this field include:<\/p><ul><li>2014\/68\/EU, Pressure Equipment Directive (PED); issued by the European Union<\/li><li>DIN EN ISO 4126-2, Safety devices for protection against excessive pressure \u2013 Part 2: Bursting disc safety devices; issued by ISO\/TC 185 &#8220;Safety devices for protection against excessive pressure&#8221;<\/li><li>AD 2000, code of practice for the European Pressure Equipment Directive; issued by Verband der T\u00dcV e. V. (Vdt\u00dcV), Germany<\/li><li>CGA S-1.1, Pressure Relief Device Standards; issued by the Compressed Gas Association, USA<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c47d070 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"c47d070\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-15\">\n\t\t\t\t<div class=\"elementor-element elementor-element-65e9e2d ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"65e9e2d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Does a rupture disc last forever?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c4465d4 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"c4465d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The service life of a rupture disc depends on the loads it is exposed to in practice. A rupture disc that is normally exposed to no pressure, or only to low pressure compared with its nominal pressure, is very durable. Elevated continuous pressure and, above all, pressure cycling lead to material fatigue. Plant operators must therefore define suitable replacement intervals for rupture discs according to the individual conditions, in order to avoid unintended activation below the nominal pressure due to fatigue.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-399e212 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"399e212\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-16\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d28f365 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"d28f365\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How leak-tight is an installed rupture disc, and how is this ensured?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca84d4d ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"ca84d4d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Rupture discs from Wehberg Safety achieve a helium leak rate of up to 1 x 10<sup>-9<\/sup> mbar l\/s. This also applies to screwed, framed and press-fitted versions. Our high-quality test equipment allows us to carry out the corresponding measurements, up to and including 100 % testing, depending on the customer&#8217;s requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0dabaa9 e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"0dabaa9\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-17\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ee9b560 ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"ee9b560\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How is the burst strength of a rupture disc tested?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2edaf76 ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"2edaf76\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Burst tests are carried out during the production of rupture discs. Their type and scope are defined in the standards and regulations mentioned above. Depending on the size of an order or batch, a certain number of test pieces must be pressurised and burst using a calibrated test rig.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d066fcf e-flex e-con-full ws-fq ws-tg-fade e-con e-parent\" data-id=\"d066fcf\" data-element_type=\"container\" data-e-type=\"container\" id=\"frage-18\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3aaee0c ws-fq__q elementor-widget elementor-widget-heading\" data-id=\"3aaee0c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What are bursting disc safety devices, and what technical requirements do they have to meet?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-040a3ce ws-fq__a elementor-widget elementor-widget-text-editor\" data-id=\"040a3ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Safety devices for protection against excessive pressure based on the use of rupture discs are referred to as &#8220;bursting disc safety devices&#8221; in accordance with DIN EN ISO 4126-2:2019.<\/p><p>A bursting disc safety device must be fitted with a rupture disc whose material is attacked neither by the medium to be protected nor by an industrial atmosphere.<\/p><p>The clamping force on the rupture disc is applied using torque wrenches or torque screwdrivers. The device must be designed so that the rupture disc is seated concentrically, can be clamped plane-parallel and is not damaged in pressure ranges in which it domes. It must also be ensured that the disc clamping cannot work loose.<\/p><p>Bursting disc safety devices must remain leak-tight to atmosphere within the operating temperature range until they respond, and must release the required cross-section when the disc bursts.<\/p><p><a href=\"https:\/\/wehberg.001.nrdwnd.de\/wp-content\/uploads\/2026\/09\/FAQ_Download_DE.pdf\" target=\"_blank\" rel=\"noopener\">\u2193&nbsp; All questions as PDF<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9ebee2a e-flex e-con-full ws-tg ws-tg-cta e-con e-parent\" data-id=\"9ebee2a\" data-element_type=\"container\" data-e-type=\"container\" id=\"kontakt\">\n\t\t<div class=\"elementor-element elementor-element-5373277 e-flex e-con-full ws-tg-wrap e-con e-parent\" data-id=\"5373277\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-517493c e-flex e-con-full ws-tg-cta__card ws-tg-fade e-con e-parent\" data-id=\"517493c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a8ff8c6 e-flex e-con-full ws-tg-cta__l e-con e-parent\" data-id=\"a8ff8c6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e4fdd15 ws-tg-cta__h elementor-widget elementor-widget-heading\" data-id=\"e4fdd15\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Didn't find your question?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-011ec4a ws-tg-cta__p elementor-widget elementor-widget-text-editor\" data-id=\"011ec4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Tell us the pressure, medium, temperature and connection. We reply within one working day \u2013 and add good questions to this page.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-39f83ed e-flex e-con-full ws-tg-cta__r e-con e-parent\" data-id=\"39f83ed\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7a4454c elementor-widget elementor-widget-html\" data-id=\"7a4454c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<a class=\"ws-tg-btn ws-tg-btn--r\" href=\"https:\/\/wehberg.001.nrdwnd.de\/en\/contact\/\">Ask a question&nbsp; \u2192<\/a><a class=\"ws-tg-btn ws-tg-btn--o\" href=\"tel:+49235167167-0\">+49 (0) 2351 67167-0<\/a>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-377","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rupture Disc Knowledge | Wehberg Safety GmbH<\/title>\n<meta name=\"description\" content=\"Rupture discs 101: what a rupture disc is, what determines the burst pressure, materials, standards and testing. 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