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Pneumatic Damper Actuator
MP909D
SUBMITTAL SHEETS
MP909D
Used for pneumatic proportional
control of variable volume terminal
units and small dampers. Available
in various operating ranges for
either individual or sequence
operation with other actuators.
Replacement devices are available
for Johnson, Powers, Robertshaw,
and older Honeywell actuator
models.
SPECIFICATIONS
Actuator Type .......................................Damper
Actuator Force ......................................Low
Fail Safe Mode .....................................Spring Return
Air Connections ....................................Barbed fitting for 3/32 in. O.D.
tubing
Stroke ...................................................2.4 in. (61 mm)
Diaphragm Effective Area ....................3 sq in. (19.4 sq cm)
Temperature Range ..............................50 F to 140 F (10 C to 60 C)
Maximum Operating Pressure .............30 psi (207 kPa)
Humidity Range ....................................5 to 95% RH
APPROVALS
Underwriters Laboratories, Inc. ............Components Recognized:
Report R18118
ACCESSORIES
14002850-001—Angle Bracket 5 3/8 in, 137 mm, long, 5 in, 127 mm,
wide
14003640-001—Angle Bracket 3 in. (76 mm) long, 3 3/4 in. (95 mm)
wide, 2 3/4 in. (70 mm) high
26025B—Damper crank arm for 3/8 in. (9.5 mm) diameter axle.
Elongated slot for linkage connection. Slot scaled for 40-50-60-75-90
degrees.
27174B—Damper crank arm for 7/16 in. (11.1 mm) diameter axle.
Elongated slot for linkage connection. Slot scaled for 40-50-60-75-90
degrees.
27520C—Push Rod (5/16 in. dia., 12 in. length)
27520G—Push Rod (5/16 in. dia., 24 in. length)
27520K—Push Rod (5/16 in. dia., 36 in. length)
27520L—Push Rod (5/16 in. dia., 48 in. length)
312867C—Damper Crank Arm for 1/2 in. (12.7mm) diameter axle.
Elongated slot for linkage connection. Slot scaled for 45-60-75-90
degrees
315321—Crankarm Balljoint (with 1/4 in male threads), fits 5/16 in.
diameter pushrod
315781—Motor shaft balljoint with 3/8 - 16 UNC female threads, fits
5/16 in. diameter pushrods.
FEATURES
• Rugged ribbed aluminum body.
• Low-friction shaft bearing.
• Close tolerance on operating range and stroke.
• Protected barb connector.
• Versatile mounting and connecting hardware options.
• Positive leakproof seal.
DIMENSIONS DIAGRAMS
1/4 DIA (6)
1/2 (13)
1-3/16
(46)
5-11/16 (145)
2-3/8
(61)
OR
1-1/16
(27)
3/8-16 UNC-2A
13/16 (20) LONG
MIN.
C484-2