• 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.SPRING RANGE PSI (KPA): 8-13 ( 0| Overview | 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-Colm |
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| Actuator Spring Range (psi) | 8 psi to 13 psi |
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| Actuator Spring Range (kPa) | 55 kPa to 90 kPa |
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| Diaphragm Effective Area (sq in.) | 23.8 sq in. |
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| Diaphragm Effective Area (sq cm) | 154 sq cm |
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| Maximum Safe Operating Pressure (psi) | 29 psi |
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| Maximum Safe Operating Pressure (kPa) | 200 kPa |
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| Fail Safe Mode | Spring Return |
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| Air connections | Barbed fitting for 1/4 in. O.D. plastic tubing |
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| Operating Humidity Range (% RH) | 5 to 95% RH |
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| Temperature Range (F) | -40 F to +158 F |
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| Temperature Range (C) | -40 C to +70 C |
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| Dimensions (in.) | 18 1/4 in. long x 6 7/8 in. high x 6 5/8 in. diameter |
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| Dimensions (mm) | 465 mm long x 175 mm high x 168 mm diameter |
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| Approvals, Underwriters Laboratories Inc | Components Recognized: Report R18118 |
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| Includes | Actuator only. No Mounting Bracket |
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Product Family
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