Johnson Controls D-4073-1 Damper Actuator

The Johnson Controls D-4073-1 Damper Actuator is a multipurpose pneumatic piston damper actuator engineered for precise positioning of dampers in unit ventilators, VAV terminal units, and small ventilating systems. This model features an 8-13 PSI spring range and a 3-inch stroke, providing reliable force for proportional or two-position control. Built with a glass reinforced polymer housing, the D-4073-1 is lightweight and resistant to many chemical and atmospheric agents. It includes a D-9502 pneumatic positioner to ensure accurate stroke response regardless of varying load conditions, and a universal mounting bracket for flexible installation inside or outside the duct. Maintenance is simplified by a two-way swivel connection that prevents binding and a telescoping piston rod that allows for fast linkage adjustments. For field air connection, it supports both 5/32" or 1/4" OD barbed fittings, ensuring compatibility with standard synthetic tubing used in high-performance pneumatic control loops.

• Precise Control: Integrated D-9502 pneumatic positioner provides accurate sequencing and increased positioning power for critical airflow applications.
• Durable Construction: The glass reinforced polymer body offers superior corrosion resistance compared to traditional metal actuators in demanding environments.
• Non-Binding Operation: Features a two-way swivel connection on the cylinder head to ensure full power delivery and smooth movement.
• Installation Versatility: The universal mounting bracket and telescoping linkage accommodate attachment points up to 8-3/4 inches away from the actuator face.
• Wide Compatibility: Designed as a direct replacement for D-3073 series and a functional upgrade for older D-251 pneumatic models.

What is the maximum damper size this actuator can handle?
With the 8-13 PSI spring range, the Johnson Controls D-4073-1 is rated for proportional control of dampers up to 6.75 sq. ft or two-position control for dampers up to 11.7 sq. ft.

Can I use this in high-temperature environments?
The unit is rated for ambient operating conditions between -20°F and 150°F (-29°C to 66°C), making it suitable for most interior HVAC installations.

What air pressure is required for operation?
While the internal spring range is 8-13 PSIG, the typical control air pressure for standard HVAC operation ranges from 0 to 20 PSIG, with a maximum rating of 25 PSIG.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.