{"type":"rich","version":"1.0","width":854,"height":854,"title":"Flapper valve","html":"<iframe aria-label=\"Flapper valve\" src=\"https://ndla.no/article-iframe/nb/urn:resource:853557e9-be13-4c7f-947a-0710f3f30808/42942\" height=\"854\" width=\"854\" allowfullscreen=\"\" style=\"border: none;\" />","iframeSrc":"https://ndla.no/article-iframe/nb/urn:resource:853557e9-be13-4c7f-947a-0710f3f30808/42942"}