I used a hot glue gasket, much like this one https://www.thingiverse.com/thing:1653180 to aid the seal, but it works GREAT for my applications. ... I made an air powered water pump using two of them in a "h" configuration (see post printing)
It's not quite 100% but it still works wonderfully. Great for teaching kids how pumps work
| one_way_valve_for_1_2__pvc.stl | 4.7MB |
