Siemens 331-2973


Linear Pneumatic Actuator, Pivot

331-2973 512796
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Linear Pneumatic Actuator, Pivot


ItemLinear Pneumatic Actuator
Operating PSI Range8 to 13
Max. Air Pressure30 psi
Nominal Spring Range8 to 13 psi
Mounting TypePivot
Net Force Exerted @ 0 PSI88 lb.
Net Force Exerted @ 18 PSI55 lb.
ProvidesGradual or Positive Actuation of Dampers
For Use With Medium to Large Dampers
Includes Pivot Post and Mounting Plate
UPC 094705127964
Weight 13.500000


Linear Pneumatic Actuator, Operating PSI Range 8 to 13, Max. Air Pressure 30 psi, Stroke 4 In., Nominal Spring Range 8 to 13 psi, Mounting Type Pivot, Net Force Exerted @ 0 PSI 88 lb., Net Force Exerted @ 18 PSI 55 lb., Length 20-1/2 In., Width 4-3/4 In., Height 7-1/2 In., Provides Gradual or Positive Actuation of Dampers, For Use With Medium to Large Dampers, Includes Pivot Post and Mounting Plate

Pneumatic Actuators
  • Proportional control of dampers in either independent or sequence operation. KMC models are for use on VAV terminals, small dampers, and valves. 3/16" fitting for 1/4" tubing, 1/2" mounting hole diameter. Operating temperature limit: -20 to 180 F. Honeywell 3UC22, 3UC23, 3UC24 have no bracket or ball joint, and are for direct replacement. Siemens models have pivot mounting. Johnson Controls models respond to a pneumatic controller or electro-pneumatic transducer, and are used with dampers up to a maximum area of 16 sq. ft. for proportional volume control and 25 sq. ft. for 2-position actuation.

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