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.
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| Cat # | Air Connections | Spring Range (kPa) | Includes | (F) | Spring Range (psi) | (psi) | (kPa) | (C) |
| MP918A1024 | 5/32 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 F | Positive positioner 10 psi span (5 psi spring included) | 25 psi | 172 kPa | -29 C to +70 C |
| MP918A1057 | 5/32 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 F | Positive positioner 10 psi span (5 psi spring included) | 25 psi | 172 kPa | -29 C to +70 C |
| MP918B1006 | Barbed fitting for 1/4 in. O.D. plastic tubing | 20 kPa to 90 kPa | 14004062-001 - External Trunnion Mounting Bracket with crankarm assembly | -40 F to +158 F | 3 psi to 13 psi | 29 psi | 200 kPa | -40 C to +70 C |
| MP918B1048 | Barbed fitting for 1/4 in. O.D. plastic tubing | 34 kPa to 69 kPa | 14004062-001 - External Trunnion Mounting Bracket with crankarm assembly | -40 F to +158 F | 5 psi to 10 psi | 29 psi | 200 kPa | -40 C to +70 C |
| MP918B1089 | Barbed fitting for 1/4 in. O.D. plastic tubing | 55 kPa to 90 kPa | 14004062-001 - External Trunnion Mounting Bracket with crankarm assembly | -40 F to +158 F | 8 psi to 13 psi | 29 psi | 200 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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