Tesla Valve (valvular conduit)

World's first and only valve with no moving parts. This device uses a series of specially-shaped chambers to create flow resistance in one direction, but not the other. It's also called a "fluid diode" because of its resemblance to how the electronic component counterpart operates.

The Tesla valve, patented in 1920, is a passive, one-way fluid control device without moving parts, consisting of interconnected teardrop-shaped loops that allow fluid to flow freely in one direction while restricting it in the reverse. This design exploits fluid dynamics to create resistance through turbulence and redirection, making it ideal for applications where mechanical valves might fail due to wear.

Unlike traditional check valves, the Tesla valve's simplicity offers durability and efficiency in pumps, engines, and microfluidic systems. Recent studies have rediscovered its potential in modern engineering, such as in pulsejet engines or medical devices, underscoring Tesla's innovative approach to fluid mechanics.