I designed the Solidworks model based on the outputs of Mathematica and rendered this animation. This is an animation of a spatial RPR-2SS six-bar linkage for use on tunnel boring machines. This new device controls a valve that cleans and closes the soil conditioning port when the flow of soil lubricant is stopped. Soil conditioning provides lubricant to manage the cutting operation. This self-cleaning valve stops clogging of the port which is a common problem.