Built several generations of near dripless and dripless sanitary portioning valve/nozzles.
Started with a factory supplied valve that dripped, and whose parts would wear and occasionally go missing (not a good feature in a food application).
Fabricated designed and built a series of incremmentally improved valves that improved speed, drip resistance and reliablility over several generations finishing with a robust valve that included an internal gas purging path.
The final iteration- Unassembled
The final iteration- Assembled