Having the 3D printed clamp, I needed to put it together to check how it worked with the hose. I used 4x 1/4", 1" length bolts with nuts and washers to protect the plastic from friction.

I really like how this turned out!

Now I have to wait for my PCBs and components to come in to build the driver and see how it works to control this from a Raspberry Pi. Meanwhile I can also start looking at how to add the valve to this assembly in the best way.