Vex3, Power Valve, 3 Position ValvePower Valve Series Vex Includes A Regulator Valve (Vex1*0), Precision Regulator (Vex1*3), 3 Position Valve (Vex3) And A Economy Valve (Vex5). The 3 Port Large Capacity Poppet Exhausting Regulator Is Equipped With A...