This project requires a CO2 system - making it the perfect add-on project for someone already outfitted with a kegerator.
Dispense shots like a madman, mix drinks while you are dispensing them, or even use it for (gasp) actual soda dispensing.
This project is very, very easy - so easy, in fact, that it should probably be regulated by your state's Liquor Control Board.
Step 1: Acquire a SODA FOUNTAIN PRO
Step 2: Buy the plumbing fittings to connect this to a kegerator
Plus, the goal is to have a bar gun - and the bartenders out at real bars don't have time to pump. So, it was clear that CO2 was the best option for driving the pump on a continous basis.
So, in order to hook up the gun to a CO2 system, you'll need the appropriate plumbing fittings to connect the small tube to the standard size CO2 air system.
I did this by purchasing a 1/4" hose barb to 1/4" female adapter and a 1/8" inch hose bard to 1/4" male plug. Cover the male fitting in teflon tape and screw it together.
Don't forget the teflon tape - it will ensure a good seal between the fittings and costs less than the CO2 gas you'd otherwise lose.
Cost for this whole lot at a respectable hardware store should run about $5-$6.
Step 3: Remove the tube from the hand pump
At the base of the gun, pull the tubes apart all the way to the bottle mounting fixture. Then snip the middle tube off at the base of the gun.
Attach this tube to the 1/8" hose barp on the fitting you created in the previous step.
Step 4: Hook it up to the Kegerator
I attached the other end of the fitting into a length of CO2 hose and connected to this output. I used a stainless steel hose clamp as well as a plastic hose clamp.
Open the CO2 valve and we had pressure. The two liter bottles held all of the pressure in my current keg setup. It is probably worth it to make sure you use good, sturdy 2 Liter bottles.
Step 5: Prepare your poison
Take off the caps for the bottles and screw on the Soda Fountain Pro's manifold.
And there you have it.
Step 6: Drink up.
It is a pretty quick stream of liquid - so you might want to hold on to the cup.
That's all that it took for me. Or at least all I can remember now. A warning: demonstrating this for your friends too many times may result in a nasty headache the next day.
I guess I should get to work on an aspirin dispenser.