Tesla valve

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Cross-section of a Tesla valve, displaying its unique cavity design

A Tesla Valve, originally called Tesla's Valvular Conduit, is a fixed-geometry passive Check valve. It allows a fluid to flow preferentially in one direction, without moving parts. The device is named after Nikola Tesla, who was awarded a patent in 1920 for its invention.[1]

The Tesla Valve is used in microfluidic applications,[2] and offers advantages such as scalability, durability, and ease of fabrication in a variety of materials.[3]

A Tesla Valve offers resistance 10-200 times greater in one direction compared to the other, in which the flow is turbulent. Based on CFD analysis of a 4 segment valve, the resistance in the blocking direction was 15 times greater than the unimpeded direction, evidence suggests that a pressure ratio of 200 could be achieved.[4]

See also[edit]


  1. ^ "Patent #: US001329559". United States Patent and Trademark Office. Office of the Chief Communications Officer. Retrieved 2 January 2017. 
  2. ^ Deng, Yongbo; Liu, Zhenyu; Zhang, Ping (28 Jan 2010). "Optimization of no-moving part fluidic resistance microvalves with low reynolds number" (PDF). Micro Electro Mechanical Systems (MEMS), 2010 IEEE 23rd International Conference on. doi:10.1109/MEMSYS.2010.5442565. 
  3. ^ Gamboa, Adrian R.; Morris, Christopher J.; Forster, Fred K. (2005). "Improvements in Fixed-Valve Micropump Performance Through Shape Optimization of Valves". Journal of Fluids Engineering. 127 (2): 339. doi:10.1115/1.1891151. 
  4. ^ "Tesla's Valvular Conduit - Fluid Power Journal". Fluid Power Journal. 2013-10-23. Retrieved 2016-06-10.