LibreValve: an electric MG90S servo shut-off valve
New design for the MG90S servo motor. Simple construction. Shuts off flow
Screw the horn onto the servo and then attach the servo to the housing, insert 4mm outer diameter tubing through the hole and out to the other side.
Printed in PLA on ender 3, 20% infill no supports.
Easily controlled with Arduino. Sample script below: (servo connected to D2 of arduino nano)