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Cutting-Edge Crystalline Flapper Valve Experiment by Craig E. Nelson

Join Consultant Engineer Craig E. Nelson as he conducts an experiment testing the innovative Crystalline Flapper Valve concept. A custom test jig was developed for this purpose, allowing for a blow pipe test that showcased promising results. The Crystalline Flapper Valve demonstrated efficient rectification of air and liquid flow, exhibiting strong sealing properties under negative pressure with minimal pressure drop. Combining these qualities with glass chemical resistance, low mechanical compliance, compact size, cost-effectiveness, and ease of fabrication suggests immense potential for further development and exploration of this design concept.

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Cutting-Edge Crystalline Flapper Valve Experiment by Craig E. Nelson

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  1. Crystalline (Glass) Flapper Valve Experiment Craig E. Nelson - Consultant Engineer

  2. Nature of the Test • A simple test jig was designed and built to test out the Crystalline Flapper Valve concept • A simple “blow pipe” test was done in order to get a feel for general performance Result and Summary • The crystalline flapper valve concept seems to be able to “rectify” the flow of air and • bubbly liquid without much trouble when tested by means of a blow pipe. It seals well with modest negative pressure and has a relatively low forward direction pressure drop. • The above, when coupled with the chemical resistance of the glass, low mechanical compliance, extremely low volume, thin aspect ratio, low cost and ease of fabrication, are rather encouraging for further work to test and evolve this design concept

  3. Cutaway View of the Test Jig Layout Outlet Hole O Ring Seal Crystalline Glass Flapper Valve Inlet Hole

  4. Crystalline Glass Flapper Bonded to Connector Plate

  5. Assembled Test Jig Layout Thin crystalline “flapper” Bond Region Inlet hole O Ring Seal

  6. Crystalline Glass Flapper Bonded to Connector Plate

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