Pressure Driven Chemical Pump

thingiverse

A adaptor for those Klean-Strip canistors to transfer fluids with the assist of a aquarium air pump. Still working on the threads. You can just follow the principle using any materials that are suited for chemicals and pressure. The principle: 1) Air pump supplying air to the (preferably top) canister creating pressure buildup. 2) A sizable hose tapped to the bottom of the container. This is your output. {I recommend putting a valve on the output to close it off when done. My system is just a hose tapped through the top of the container traveling all the way to the bottom to pickup fluid. This method you dont need a valve, just place the output higher than your container. I choose this way so no weird pressure builds up when not in use. There is no free moving air to evaporate your fluid.} 3) Flow is regulated (once pressure equalizes) by hose dimensions and air supply. Increase these respectively to obtain higher flow rate. I was surprised the flow level when pressure equalizes. The video shows the output hose of 10mm OD and 8mm ID. Higher flow can be obtained with a larger hose, but I can already empty a full Klean-Strip can in under a minute so definitely will be looking into larger containers. Word on working with pressurized containers: Please use PPE and be ABSOLUTLY sure your container can handle up to 200 PSI as well as your hoses. The safety procedures here are the same with handling pneumatic tools and hardware. **After testing it looks like flow rate using an average aquarium pump(20 bucks, the adjustable ones will work wonders but cost more) is around 1 gal/min. The video showed the last half of the canister being emptied in 30 seconds. Searching for good 3 gallon containers for next tests.** Video of the concept working here: https://youtu.be/MP-Sg5rGEN4