{"id":9862,"date":"2017-06-19T07:00:06","date_gmt":"2017-06-19T05:00:06","guid":{"rendered":"https:\/\/www.gok-blog.de\/2017\/06\/19\/why-is-a-butane-or-propane-gas-cylinder-never-filled-to-100-percent\/"},"modified":"2026-06-15T09:07:20","modified_gmt":"2026-06-15T07:07:20","slug":"why-is-a-butane-or-propane-gas-cylinder-never-filled-to-100-percent","status":"publish","type":"post","link":"https:\/\/www.gok-blog.de\/en\/why-is-a-butane-or-propane-gas-cylinder-never-filled-to-100-percent\/","title":{"rendered":"Why is a butane or propane gas cylinder never filled to 100 percent?"},"content":{"rendered":"<p style=\"text-align: justify;\">It&#8217;s a curious thing: You go to the LPG retailer or the DIY shop and want to replace your empty gas cylinder with a full one. But you get one back which is only 80 percent full. If you&#8217;re a bit of a conspiracy theorist, we&#8217;ll tell you now: There are very practical and important reasons why a butane and propane gas cylinder is never filled to 100 percent \u2013 for your own safety.<!--more--><\/p>\n<figure id=\"attachment_8843\" aria-describedby=\"caption-attachment-8843\" style=\"width: 1030px\" class=\"wp-caption aligncenter\"><a ref=\"magnificPopup\" href=\"https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/10\/gasflaschen-5-und-11-kilogramm.jpg\"><img decoding=\"async\" class=\"wp-image-8843 size-large\" src=\"https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/10\/gasflaschen-5-und-11-kilogramm-1030x686.jpg\" alt=\"Jede Butan- oder Propangasflasche ben\u00f6tigt ein Gaspolster oberhalb der fl\u00fcssigen Phase.\" width=\"1030\" height=\"686\" title=\"\" srcset=\"https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/10\/gasflaschen-5-und-11-kilogramm-1030x686.jpg 1030w, https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/10\/gasflaschen-5-und-11-kilogramm-300x200.jpg 300w, https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/10\/gasflaschen-5-und-11-kilogramm-768x512.jpg 768w, https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/10\/gasflaschen-5-und-11-kilogramm-705x470.jpg 705w, https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/10\/gasflaschen-5-und-11-kilogramm.jpg 1280w\" sizes=\"(max-width: 1030px) 100vw, 1030px\" \/><\/a><figcaption id=\"caption-attachment-8843\" class=\"wp-caption-text\"><strong>5 and 11-kilogram cylinders are filled with 80 percent of the maximum volume.<\/strong><br \/>\u00a9 Pixabay.com<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">LPG cylinders filled with propane, butane or a mixture of the two are very popular, versatile and mobile sources of energy. If you, as a private individual, need a <strong>gas cylinder for barbecuing with gas <\/strong>, for <strong>camping<\/strong>, <strong>heating<\/strong> or <strong>cooking<\/strong>, you usually select a cylinder with a filling weight of 5 or 11 kilograms.<\/p>\n<h2 style=\"text-align: justify;\">20 percent more<\/h2>\n<p style=\"text-align: justify;\">You will always also get this net weight of LPG from your refiller on your way home; however,<strong> a lot more than just the 5 or 11 kilograms<\/strong> would fit into the cylinder. The cylinder has approx. 20 percent more capacity.<\/p>\n<p style=\"text-align: justify;\">Ergo: LPG cylinders are always filled up to a maximum of 80 percent \u2013 never any more. There are two reasons for this golden rule:<\/p>\n<ul>\n<li style=\"text-align: justify;\">\n<figure id=\"attachment_8702\" aria-describedby=\"caption-attachment-8702\" style=\"width: 128px\" class=\"wp-caption alignright\"><a ref=\"magnificPopup\" href=\"https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/03\/flasche.jpg\"><img decoding=\"async\" class=\"wp-image-8702\" src=\"https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/03\/flasche-157x300.jpg\" alt=\"In a butane and propane gas cylinder, a gas cushion is always required above the liquid phase of the gas. That&#039;s why we never fill the cylinder with 100 percent.\" width=\"128\" height=\"245\" title=\"\" srcset=\"https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/03\/flasche-157x300.jpg 157w, https:\/\/www.gok-blog.de\/wp-content\/uploads\/2016\/03\/flasche.jpg 354w\" sizes=\"(max-width: 128px) 100vw, 128px\" \/><\/a><figcaption id=\"caption-attachment-8702\" class=\"wp-caption-text\">Gas cushion in the gas cylinder<\/figcaption><\/figure>\n<p style=\"text-align: left;\">When filling the cylinder, propane, butane and mixtures of the two are liquid. However, you need a <strong>gaseous phase<\/strong> for all applications such as barbecuing, cooking or heating. This can only form if there is free capacity in the container. This allows the LPG to evaporate and form a <strong>gas cushion<\/strong> which is suitable for supplying the connected gas equipment.<\/p>\n<\/li>\n<li style=\"text-align: left;\">The liquid phase of a gas expands even <a href=\"https:\/\/www.gok-blog.de\/en\/2017\/09\/11\/can-the-lpg-cylinder-be-left-in-the-sun\/\" target=\"_blank\" rel=\"noopener noreferrer\">faster than the gas phase in the event of a <strong>rise in temperature<\/strong>.<\/a> If the cylinder is 100 percent filled with liquid phase and the temperature rises, the cylinder is likely to burst.<\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\">Never fill butane or propane gas cylinder yourself<\/h2>\n<p style=\"text-align: justify;\">You see that there are good reasons why a butane or propane cylinder is never filled with 100 percent. So you don&#8217;t have to keep a close eye on your filler next time; the specialists know what they&#8217;re doing.<\/p>\n<p style=\"text-align: justify;\"><strong>Please also note<\/strong> that you may not fill or refill gas cylinders yourself. Here is some information <a href=\"http:\/\/dvfg.de\/fileadmin\/user_upload\/downloads\/DVFG_Fachinformation_Fuellen_von_Gasflaschen-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">from the German LPG Association (DVFG): DVFG specialist information on &#8220;Filling gas cylinders\/tank cylinders at public filling stations&#8221;<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Both butane and propane gas cylinders are never filled with 100 percent. As a gas cushion is required above the liquid phase to withdraw the propane or butane, the gas cylinder is filled with a maximum of 80 percent of the volume.<\/p>\n","protected":false},"author":8,"featured_media":10471,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[397],"tags":[],"ausgabe":[],"class_list":["post-9862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-safety"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/posts\/9862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/comments?post=9862"}],"version-history":[{"count":1,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/posts\/9862\/revisions"}],"predecessor-version":[{"id":14546,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/posts\/9862\/revisions\/14546"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/media\/10471"}],"wp:attachment":[{"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/media?parent=9862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/categories?post=9862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/tags?post=9862"},{"taxonomy":"ausgabe","embeddable":true,"href":"https:\/\/www.gok-blog.de\/en\/wp-json\/wp\/v2\/ausgabe?post=9862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}