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Pneumatic Damper Actuator
MP920
MP920
Provides proportional control of
large dampers in HVAC systems or
inlet vanes on a VAV fan. Positive
positioner available separately.
Replacement devices are available
for Robertshaw actuator models.
SPECIFICATIONS
Actuator Type .......................................Damper
Actuator Force ......................................High
Fail Safe Mode .....................................Spring Return
Air Connections ....................................Barbed fitting for 1/4 in. O.D.
plastic tubing
Stroke ...................................................6 in. (150 mm)
Diaphragm Effective Area ....................24.8 sq in. (160 sq cm)
Temperature Range ..............................-20 F to 158 F (-30 C to 70 C)
Maximum Operating Pressure .............29 psi (200 kPa)
Humidity Range ....................................5 to 95% RH
ACCESSORIES
14004062-001—External Trunnion Mounting Bracket
14004241-002—Hitch Pin (Six Sets)
14004345-001—Positive Positioner Kit, 10 psi feedback spring
AK3556—Pipe Mounting Assembly for 1-1/4 in. pipe
AK3557—Short Clevis Bag Assembly for 3/8-16 threaded rod
AK3558—Swivel Bracket Bag Assembly
AK3559—Long Clevis Bag Assembly with actuator shaft coupling for
5/8-11 threaded rod
AK3560—Balljoint, 3/8-24 threaded stud with couplings for 5/8-11
threaded rod and actuator shaft
AK3561—Balljoint, 3/8-24 threaded stud with couplings for 3/8-16
threaded rod
FEATURES
• Rolling diaphragm operated.
• Fail safe on over pressure.
• Actuator can be swivel mounted from either end to pipe,
floor, or wall surface.
• Optional positive positioner provides accurate positioning
under varying load conditions.
DIMENSIONS DIAGRAMS
1
(30)
11-7/32 (285)
M18809
4 (100)
6-3/16
(157)
8-1/4
(210)