![]() To distribute the six air lines into the ingredient bottles, we used an aluminum manifold (McMasterCarr part #5469K151) Thread your push to connect fittings into this as well. Size your tubing to match each connection. (McMaster Carr part #51055K14) These thread into the valves and the Tygon tubing plugs into the fitting. To make connections easier, I used acetal push-to-connect fittings. Again, you are basically just trying to get to about 5 psi at the bottles. The regulator was purchased through SurplusCenter on the net for about $20. On the high pressure side, use pvc air line. Use clear Tygon PVC tubing to connect everything on the low pressure side. Use a Schrader valve in your tank and then you can fill it using a regular air compressor or foot pump. (any more than this is a waste.you get good flow at 5 psi and reduce air leaks). I charge these tanks to about 75 psi and then using a regulator, reduce the pressure to 5 psi at the ingredient bottles. You can use any air supply tank as long as it has enough volume to fully displace all the contents in your ingredient bottles. The air tanks are from ebay and were originally used in semi truck air horns. These were obtained at McMasterCarr for about $25 each. The valves are 12 volt plunger-style solenoid valves (normally closed). The bottles are about a liter each and have a standard neck thread like a plastic coke bottle (you can actually use plastic coke bottles). An electronic valve (solenoid valve) controls how much liquid comes out and when.įor my setup, I am using six ingredient bottles and six solenoid valves. The Robotic Drink Mixer uses a compressed air system to force liquids out of the ingredient bottles (air is forced into the bottles and a syphon tube allows the liquid to come out. ![]()
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