Barber Colman 50 sq. in Damper Actuator (8-13 psig)

These valve actuators, with a 50 sq. in. (323 cm2) effective diaphragm area, are used for proportional pneumatic control of hot water or chilled water valves. Application MK-66x1 is used to control 1-1/2 in. to 2 in. VB-7xxx series valves Features Rugged die cast aluminum housing. Replaceable beaded molded neoprene diaphragm. Built-in spring to retract output shaft. Adjustable start point on loss of air pressure.