🌐EnglishEnglishDeutschEspañolFrançaisNederlandsРусский中文日本語EntityQ1425971· pop 15inverted siphonpipes that must dip below an obstruction to form a "U" shaped flow pathWikidata factsImageDüker Schema.svgvia Wikidata · CC0Available in 14 languagesDeutsch日本語РусскийBasqueCzechEstonianKazakhLatvianLithuanianNederlandsUkrainianConnectionssiphonEntity