THIS IS A WORK IN PROGRESS! It leaks a lot unless fully-open or fully-closed.
The plug valve and the ball valve designs seem the most solid and 3d printable. This first try is the ball valve.
Required vitamins:
Name Last modified Size DescriptionApache Server at burningsmell.org Port 80
Parent Directory - ball-core.stl 2017-07-20 19:12 157K ball-shell.stl 2017-07-26 17:41 3.8M ball0011.scad 2017-07-26 17:35 3.9K ballvalve.jpg 2019-02-01 13:37 45K egh.stl 2017-06-19 14:30 276K hosecap9.stl 2017-07-14 19:04 1.4M