4/2-way pneumatic valve for fischertechnik

Two versions, v3 PLA/PETG-only version (left side and middle on first image), v4 with TPU gasket (right side on first image). Both are not perfect and need refinement, this is mainly for demonstration purposes.

Print with contact faces facing down on a glass plate, except the v4-TPU gasket, print this facing up, all without support.

Perfect Z-leveling, low layer height (0,12mm) , no stringing, and minimal overextrusion help with getting things airtight. Tweak your cooling sessions so that "lift head" is not needed, it will probably mess up when printing the connector tips.

Update history:

Aug 25 2025: Improved TPU version v5 with reduced contact area to lower friction, v4 is now obsolete.