New MDG mobile directional-control valve features a closed-center parallel or series circuit that also functions as an open-center circuit with an optional unloading inlet. The modular ...

Directional valves such as Parker Hannifin's B3G-Series threeway (left) and four-way valves are often used to control pneumatic operations. Directional-control valves are vital in any pneumatic ...

Their prototypes kept fluids flowing in one preferred direction with no need for flaps to control that flow and performed significantly better than so-called "Tesla valves," particularly when made ...