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Damper Actuator, force: Low, 8 - 13 psi


Low force spring return damper actuator with 8-13 psi spring range an 2.4 in. stroke

  • Product Info
  • Literature
  • Accessories & Replacement Parts


MP909D is 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. Compatible with all competitors products.


  • 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.

Product Specifications

Dimensions (in.)
6 5/16 in. long ( add 1 in. for shaft ) x 2 13/32 in. diameter
Dimensions (mm)
160 mm long ( add 25 mm for shaft ) x 61 mm diameter
Maximum Safe Operating Pressure (psi)
30 psi
Maximum Safe Operating Pressure (kPa)
207 kPa
Temperature Range (F)
50 F to 140 F
Temperature Range (C)
10 C to 60 C
Actuator only. 3/8 in.-16 Threaded Shaft. No Mounting Bracket or Ball Joint
Approvals, Underwriters Laboratories Inc.
Components Recognized: Report R18118
Operating Humidity Range (% RH)
5 to 95% RH
Actuator Type
Fail Safe Mode
Spring Return
Stroke (in.)
2.4 in.
Stroke (mm)
61 mm
Actuator Force
Spring Range (psi)
8 psi to 13 psi
Spring Range (kPa)
55 kPa to 90 kPa
Diaphragm Effective Area (sq in.)
3 sq in.
Diaphragm Effective Area (sq cm)
19.4 sq cm
Air connections
Barbed fitting for 3/32 in. O.D. tubing



Push Rod (5/16 in. dia., 12 in. length) Used With: All Actuators and Dampers


Push Rod (5/16 in. dia., 24 in. length) Used With: All Actuators and Dampers


Push Rod (5/16 in. dia., 36 in. length) Used With: All Actuators and Dampers


Push Rod (5/16 in. dia., 48 in. length) Used With: All Actuators and Dampers


5 3/8 inch long by 5 inch wide, angle bracket for damper actuators


3 x 3 3/4 x 2 3/4 inch, angle bracket for damper actuators


Damper crank arm - 3/8 in. diam axle.


Damper crank arm for 7/16 in. diam axle.


Damper Crank Arm for 1/2 in. diam. axle