Read the PDF for full instructions on a true Engineering Bill Of Materials style (BOM). Note that for post-processing of the valve, you will need to cut off the wall between the nozzles (added for stability purposes) Additional items you will need are: 3-off Rubber Balloons 4-off M3x8 screws Note that in order to form the seal between the "screw" and the "Valve" you can cut the nozzle of a balloon and form an O-Ring