Pool fountain with valve for switching between jet and fountain

I wanted a fountain, so I designed one and also a valve to allow me to switch between jet ciruclation and fountain. The assembly attaches to a standard pool jet. Please see the following video to understand how it works, video is best than just writing explanations here: https://youtu.be/eHzg6lwoskg

Here you can see it in action (in fountain mode): https://youtu.be/X9eyqNJj4Go

The bracket you see on top is a loose fit, it just prevents the assembly to put unnecessary pressure to the po