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![Schematic of a proportional pneumatic valve (Proportion-Air's QB1 valve) | Download Scientific Diagram Schematic of a proportional pneumatic valve (Proportion-Air's QB1 valve) | Download Scientific Diagram](https://www.researchgate.net/publication/3332837/figure/fig2/AS:669024807550987@1536519352684/Schematic-of-a-proportional-pneumatic-valve-Proportion-Airs-QB1-valve.png)
Schematic of a proportional pneumatic valve (Proportion-Air's QB1 valve) | Download Scientific Diagram
![Exemplary air flow trajectories through the proportional valve on road... | Download Scientific Diagram Exemplary air flow trajectories through the proportional valve on road... | Download Scientific Diagram](https://www.researchgate.net/publication/319382941/figure/fig2/AS:533495031709696@1504206535756/Exemplary-air-flow-trajectories-through-the-proportional-valve-on-road-1-2-with-the.png)