Parametric Airlift Water Valve
thingiverse
This parametric airlift valve model is suitable for hydroponic and aquaponic systems, like Window Farms™, as a replacement for the original airlift valve. Adjustable tube size and connection points are featured. Creative Commons BY-SA license applies. Alternatively, T-valves can be used as shown in an example (http://our.windowfarms.org/2011/11/16/t-valve-airlift/). Print with non-toxic plastics, connect to an aquarium air pump, and submerge the valve for silent water lifting. Find more instructions at windowfarms.org. The Haskell file is parametric, while Scad is its output; it requires Scad.hs from Haskell/OpenSCAD bindings (http://www.thingiverse.com/thing:10523). This work is ongoing and may include support for two different tube sizes in the future.
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