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Honeywell MP918A,B Pneumatic Damper Actuators

Pneumatic Damper Actuators
MP918A,B

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.

• 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.

Select a link under the "item" tab below to order.

Cat #Air ConnectionsSpring Range (kPa)Includes(F)Spring Range (psi)(psi)(kPa)(C)
MP918A10245/32 in. push-on barb (Pilot), 1/4 in. push-on barb (main.)Positive positioner 69 kPa span (34 kPa spring included)14004062-001 - External Trunnion Mounting Bracket with crankarm assembly. Positive Positioner-20 F to +158 FPositive positioner 10 psi span (5 psi spring included)25 psi172 kPa-29 C to +70 C
MP918A10575/32 in. push-on barb (Pilot), 1/4 in. push-on barb (main.)Positive positioner 69 kPa span (34 kPa spring included)14004062-002 - Internal N.C. Trunnion Mounting Bracket with pushrod assembly. Positive Positioner-20 F to +158 FPositive positioner 10 psi span (5 psi spring included)25 psi172 kPa-29 C to +70 C
MP918B1006Barbed fitting for 1/4 in. O.D. plastic tubing20 kPa to 90 kPa14004062-001 - External Trunnion Mounting Bracket with crankarm assembly-40 F to +158 F3 psi to 13 psi29 psi200 kPa-40 C to +70 C
MP918B1048Barbed fitting for 1/4 in. O.D. plastic tubing34 kPa to 69 kPa14004062-001 - External Trunnion Mounting Bracket with crankarm assembly-40 F to +158 F5 psi to 10 psi29 psi200 kPa-40 C to +70 C
MP918B1089Barbed fitting for 1/4 in. O.D. plastic tubing55 kPa to 90 kPa14004062-001 - External Trunnion Mounting Bracket with crankarm assembly-40 F to +158 F8 psi to 13 psi29 psi200 kPa-40 C to +70 C
Actuator Type: Damper
Actuator Force: High
Fail Safe Mode: Spring Return
Air Connections: 5/32 in. push-on barb (Pilot), 1/4 in. push-on barb (main.)
Stroke: 3 1/2 in. (90 mm)
Diaphragm Effective Area: 23.8 sq in. (154 sq cm)
Temperature Range: -20 F to +158 F (-29 C to +70 C)
Maximum Operating Pressure: 25 psi (172 kPa)
Humidity Range: 5 to 95% RH
Approvals:
Underwriters Laboratories Inc. Components Recognized: Report
R18118

 

 

 

 

 

 

 

 

 

 

 

 

 



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