Damper Actuator, Actuator force: Low ,Spring Range: 3 psi to 12 psi

Honeywell MP516A1087 Pneumatic Unit Ventilator Damper Actuator:

Used to control the damper on unit ventilators. Can be adapted to various unit ventilator control cycles.
Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell unit ventilator damper actuators.
Constructed of strong zinc die castings.
Hesitation feature available for unit ventilator cycles requiring a minimum percentage of outdoor air.

Product Specifications:

Application Type Damper.
Actuator Force medium.
Stroke (in) 2-1/8 in. to 2-1/2 in.
Stroke (mm) 54 mm to 63 mm.
Diaphragm Effective Area (sq in) 11 sq in.
Diaphragm Effective Area (sq cm) 71 sq cm.
Dimensions (in) 5-1/8 in. high, 6-7/8 in. wide (with arm).
Dimensions (mm) 130 mm high, 175 mm wide (with arm).
Maximum Operating Pressure (psi) 25 psi.
Maximum Operating Pressure (kPa) 172 kPa.
Temperature range (F) -20 F to +160 F.
Temperature range (C) -29 C to +71 C.
Type Spring return.
Air connections 1/8 in. NPT.
Comments The lever arm moves to the desired minimum position as air pressure increases from 0 to 3 psi, hesitates from 3 to 8 psi, and completes its stroke from 8-12 psi.
Description Damper Actuator, Actuator force: Medium ,Spring Range: 3 psi to 12 psi.
Actuator Spring Range (psi) 3 psi to 12 psi.
Humidity Ratings (% RH) 5 to 95% RH.
Actuator Spring Range (kPa) 21 kPa to 83 kPa