low liquid level syphon

thingiverse

This design is printable without supports, although adding them will prevent hole formation. I use this to drain my hot tub efficiently without dismantling pipes; simply place it at the lowest level and add weight on the large ear. The short profile prevents air suction while maximizing water flow through open sides. I opted for natural plastic due to its durability, but it may not photograph well. Pair with http://www.thingiverse.com/thing:236096 for optimal performance.