This is a parametric version of an airlift valve for hydroponic and aquaponic systems like Window Farms[tm]. This model can be used as a parametric replacement to the airlift valve mentioned in the ancestry. Tube size and connection point can be configured. License is restricted to the terms of the CC-BY-SA as per the original work.You may also consider to use T-valves as in the following example instead: http://our.windowfarms.org/2011/11/16/t-valve-airlift/Print in non-toxic plastics, connect an aquarium air(!) pump of the kind that aerates your tank, submerge the valve in water to lift water without the noise. Further instructions can be found for example at windowfarms.orgThe Haskell file is parametric, the Scad file is just its output. Requires Scad.hs from the Haskell/OpenSCAD bindings at http://www.thingiverse.com/thing:10523Work in progress until I decide on the default parameters that work best for me. I'd also add plan to add support for two different tube sizes.