Johnson Controls D-3031-3 Damper Actuator

The Johnson Controls D-3031-3 is a high-performance pneumatic piston damper actuator specifically engineered for precise damper positioning on small terminal units. This heavy-duty component features a 5-10 PSI spring range and a standard 1-inch stroke, which can be modified in 1/8-inch increments using the integrated adjustable stops down to a 1/2-inch limit. Designed for versatile field mounting, the unit supports both swivel and rigid mounting configurations, ensuring compatibility with normally open or normally closed dampers. The 5/16-inch threaded piston rod provides a robust connection point for technical linkages, while the non-corrosive polycarbonate body and synthetic elastomer diaphragm ensure long-term structural integrity under standard operating pressures. With its dual-sized barbed fitting, this actuator facilitates rapid 5/32-inch or 1/4-inch OD tubing air connections, making it an essential HVAC replacement part for legacy D-160 and D-251 #2S actuators in commercial pneumatic control systems.

Key Benefits

• Optimized Compatibility: Direct unit replacement for obsolete Johnson Controls D-160 and D-251 #2S pneumatic actuators.
• Precision Stroke Control: Includes two movable nylon adjustment stops to fine-tune stroke length from 1/2 inch to 1 inch.
• Flexible Installation: Features a 360-degree rotatable air connection to simplify terminal unit plumbing in confined spaces.
• Durable Construction: Built with a polycarbonate top and body and a resilient elastomer diaphragm for a high power-to-size ratio.

Common Questions

Is the D-3031-3 compatible with existing linkage kits?
Yes, the 5/16-inch diameter piston rod is threaded to accept standard Johnson Controls linkage kits and mounting plate accessories like the D-3031-100 series.

Can I use this actuator in environments with refrigerants?
No, this unit should not be installed in applications where it may be exposed to corrosive solvents or refrigerants, as these chemicals can degrade the polycarbonate housing.

What is the maximum control pressure for this model?
While the nominal spring range is 5 to 10 PSIG, the D-3031-3 can handle a maximum control pressure of 25 PSIG.

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.