4" Pneumatic Right Angle Mount Damper Actuator, 8-13 PSI with 1/2" Crank Arm

4" Pneumatic Right Angle Mount Damper Actuator, 8-13 PSI with 1/2" Crank Arm These actuators are designed for use in pneumatic control systems positioning automatic air dampers and may be used for gradual or two-position applications. Select either post or right angle bracket mounting. Right angle mounted versions are furnished with crank arms for either 1/2" or 3/8" damper shafts. Either style can be shipped with a positive positioner. Actuators with positioners are furnished with an 8–13 psi internal spring, a 5 psi span spring, and if desired, a 10 psi span spring may be ordered separately and added in the field.