Pneumatic Damper Actuator, Medium Actuator Force, 10 PSI Span on Positive Positioner, 4" Stroke, Spring Return, 25 PSI Maximum Operating Pressure, 6.6 Square Inch Diaphragm, Dual Barbed Fitting for 5/32" or 1/4" OD Tubing Actuator Air Connection, 5/32" Barb For Pilot, 1/4" Barb For Main , 1/4" Barb for Branch -28-160 Degree Temperature Range, 5-95% RH Humidity Range, Includes Mounting Bracket for Internal Normally Closed Trunnion Mounting

Pneumatic Variable Volume Damper Actuator, Low Actuator Force, Spring Return, Barbed Fitting for 1/4" OD Plastic Tubing, 30 PSI Maximum Operating Pressure, 10-15 PSI Spring Range, Includes Flat Mounting Bracket, Shaft has 1/8" Diameter hole for Roll Pin , 50-140 Degree Temperature Range, 5-95% RH Humidity Range, 2.2 Square Inch Diaphragm

Pneumatic Variable Volume Damper Actuator, Low Actuator Force, Spring Return, Barbed Fitting for 1/4" OD Plastic Tubing, 30 PSI Maximum Operating Pressure, 10-15 PSI Spring Range, Includes 90 Degree Angled Mounting Bracket and 3/8" Threaded Shaft , 50-140 Degree Temperature Range, 5-95% RH Humidity Range, 2.2 Square Inch Diaphragm

Pneumatic Variable Volume Damper Actuator, Low Actuator Force, Spring Return, Barbed Fitting for 1/4" OD Plastic Tubing, 30 PSI Maximum Operating Pressure, 5-10 PSI Spring Range, Includes 90 Degree Angled Mounting Bracket and 3/8" Threaded Shaft , 50-140 Degree Temperature Range, 5-95% RH Humidity Range, 2.2 Square Inch Diaphragm