Damper Actuator Pneumatic Positive Positioner Spring Return 20-1/2 x 8 x 6-5/8 Inch

Used for proportional control of medium- to large-size dampers in HVAC systems. The MP918A,B are rolling diaphragm, piston-type actuators. Positive Positioner available. Replacement devices for most competitors products.

• 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
• Deep drawn aluminum body
• 0.021 scfm air consumption
• 5/32 in push-on barb (Pilot), 1/4 in push-on barb (main) air connection
• 23.8 sq-in diaphragm effective area
• Spring return fail safe mode
• 5 to 95% RH humidity range
• -20 to 158 deg F ambient temperature