Hi Wal,
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I don't have experience with that unit, but have just created my own by running an airline into a block of ali and reducing that into a 3mm brass tube and then mounting a reservoir on top of my z-axis and running a fluid tube (PC coolant stuff) through the same block, where it then drips into the airflow from the brass tube.
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I still have to do something more controllable to the fluid tube than a clamp but it works well, as you hopefully can see if you go to my youtube channel (also shows some evolution on the z-axis). That might be a cheaper option for you and especially as your machine has a fixed Z iirc.
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Linkage: CNC Router Milling Aluminium #5 - YouTube
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Cheers
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Chris