Seeing the other tesla valve, I was pretty certain that the same principle could be extended to 3D. I came across a more symmetric, optimized design of a tesla microvalve at http://www.senlin41.org/topology-optimization-of-tesla-type-microvalve/ and traced it.
The following is a trace of the optimized valve in openscad with added support to make it printable without overhang or flying parts. Parameters allow you to set the coarseness of the rotational extrusion ($fn=32 works fine for me), and the distance of the support bridges.
I have not printed or tested that yet, so I suggest you start with the scad file and adapt it to your needs.
| negative32.stl | 1.1MB | |
| tesla32.stl | 1.1MB | |
| tesla_optimized.scad | 1.9KB |
