Check Valve

This is meant to be a one-way check valve between two parts of a water tube.
Feel free to copy and customize your own diameters.

After trying several thingiverse check valves, I wasn't satisfied. So I tried to come up with one of my own :)


Main part:
- 18mm inner diameter
- contains 16mm standard marble (you can buy it in toy stores)
- bottom part is 'curved' to allow marble to 'sit' on the bottom when blocking
- holes on sides for a 'pin' blocker

Pin blocker:
- simple stick to go through the main part and block the marble from coming out

Connector:
- 16mm outside diameter in order to fit tightly inside the main part's larger end

Note on tolerance:
My Ender machine is quite old so the tolerances and quality for me came out "ok", but water was still seeping out about 1 drop every 2 seconds when I tried it. Still, quite good as far as I can print it at 0.12mm.

Probably better machines will achieve a tighter result and either completely block water or very slow