A microfluidic valve can be used to proportionally control fluid flow. Applied fluidic pressure to the control channel closes the flow channel. This valve when printed on an Objet Connex500 with a flexible material for the membrane, TangoPlus (FLX930), and a stiff material for the structure channel, VeroWhitePlus (RGD835), closes at approximately 30 PSI control pressure. For more details, please see http://matter.media.mit.edu/tools/details/multimaterial-3d-printed-valve
