Tesla valvular conduit Check Valve

This is a copy scaled from the patent file of a valvular conduit for a Tesla turbine. It is basically a one way valve with no moving parts and works based on the pressure drop from turbulence from air traveling the wrong direction. The STL file was 2 bodies with tapped holes to machine from billet so with printed item you cannot see the internal workings unless you print with transparent filament or stop print before cover is finished.

Just updated model to have tube ends and is 1st print.