Barber Colman Pneumatic Damper Actuator with 1/2" Linkage (3-12 PSI)

These actuators are designed for use in pneumatic control systems to position air control dampers in response to signals from pneumatic controllers. The M556 is a large swivel-mounted actuator with an adjustable crank arm having a clamp to fit a 1/2 in. O.D. damper shaft. Actuator with complete linkage for 1/2 in. damper shafts.