Honeywell High Force Damper Actuator w/ Positive Positioner for Variable Volume Units (10 psi)

Used for proportional control of medium- to large-size dampers in HVAC systems. The MP918A,B are rolling diaphragm, piston-type actuators. The MP918A has a positive positioner. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell actuator models. Features Rolling diaphragm operated. Low friction shaft bearing. Close tolerance on operating range and stroke. Versatile mounting and connecting hardware. Non-overlapping spring ranges for sequencing. Reliable-long life.