Step 2: start plumbing
This system works by putting air pressure on the top of the coolant to force it out to the nozzle where it is mixed with air. We need to be able to get the coolant out of the bottom of the canister. We will need a special fitting to do that. I did this by turning down a barb fitting and soldering it to a compression fitting. This way I can feed a hose to the bottom of the canister and seal it at the outlet at the top.