# inverted siphon

> pipes that must dip below an obstruction to form a "U" shaped flow path

**Wikidata**: [Q1425971](https://www.wikidata.org/wiki/Q1425971)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Inverted_siphon)  
**Source**: https://4ort.xyz/entity/inverted-siphon