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Johnson Controls D-4070 Pneumatic Piston Damper Actuator

Pneumatic Piston Damper Actuator

The D-4070 Two Stage Pneumatic Actuator is a multipurpose positioning device used to accurately position small dampers primarily on unit ventilators, Variable Air Volumes (VAVs), terminal units, and small ventilating dampers in response to output signals of a pneumatic controller or electro-pneumatic transducer. The D-4070 was specifically designed to provide ASHRAE Cycle II and W control of unit ventilators where a minimum of outdoor air (15 to 50%) is admitted during the heating and ventilating stage and gradually increased to 100%, if needed, during the cooling and ventilating stage. The D-4070 is a direct replacement for existing D-3070 actuators and a functional replacement for older D-255 actuators.

• 2-way swivel connection ensures nonbinding movement and full power delivery
• glass reinforced polymer housing which is lightweight, corrosion and chemical resistant
• telescoping Linkage for fast and flexible installation
• economical because has 2 springs for two stage operation which functions as two separate actuators
• designed to provide ASHRAE Cycle 11 and W controls of unit ventilators

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StrokeTorque Output for 90° RotationNominal Spring Range, psig (kPa)Cat #Force, lb (Newtons)
Power73.7 in·lb (8.4 N·m)3-6 (21-42) First Stage, 9-12 (63-84) Second Stage with Auxiliary Mounting BracketD-4070-153.6 (239)
Return27.6 in·lb (3.1 N·m)3-6 (21-42) First Stage, 11-14 (35-70) Second Stage with Auxiliary Mounting BracketD-4070-220.1 (89)
Power55.3 in·lb (6.3 N·m)3-6 (21-42) First Stage, 9-12 (63-84) Second Stage body onlyD-4070-600140.2 (179)
Return27.6 in·lb (3.1 N·m)3-6 (21-42) First Stage, 11-14 (35-70) Second Stage body onlyD-4070-600220.1 (89)
Stroke 2-3/4 in. (70 mm)
Control Air Pressure 0 - 20 psig for HVAC,
25 psig (171 kPa) Maximum
Air Connections 1/8 in. NPT straight barbed fitting for
1/4 in. O.D. polytubing (furnished)
Ambient Storage Condition -20 to 150°F (-29 to 66°C)
Ambient Operating Conditions 35 to 150°F (2 to 66°C)
Effective Diaphragm Area 6.7 in2 (45 cm2)
Housing Material Glass reinforced polymer,
UL 94 HB flame class rating
Ambient Temperature
–20 to 150°F (–29 to 66°C)
Diaphragm Material Synthetic elastomer
Dimensions 3-7/8 in. diameter x 9-15/16 in. long
Shipping Weight 3.5 lb (1.6 kg)

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