Force Control's family of Oil Shear Clutch and Brake Products is most often actuated by a Pneumatic Control Valve. Torque control of the units is accomplished by adjusting the actuation pressure. To aid the designer in the selection specification of the correct control circuit the charts below have been provided. During the selection process of the Posidyne or Posistop a particular logic type was decided upon. Based on the logic type of your unit find the correct control valve model number indicated in the appropriate chart.