Barber Colman 11 sq. in Damper Actuator (5-10 psig)

These valve actuators, with an 11 sq. in. (71 cm2) effective diaphragm area, are used with TAC VB-7xxx series valves for proportional pneumatic control of hot water or chilled water valves. The MK-46xx and MK4-46xx Series may also be mounted on discontinued 1/2" through 1-1/4" TAC VB-111, VB-131, VB-314, and VB-9xxx series valves. Application Rugged die cast aluminum housing Replaceable beaded molded neoprene diaphragm Built-in spring to retract output shaft on loss of air pressure Adjustable start point Multiple spring ranges for various applications 1/2" nominal stroke