Johnson Controls D-3153-103 Linkage Rod

The Johnson Controls D-3153-103 Linkage Rod is a professional-grade replacement component engineered specifically for high-performance pneumatic damper actuators. This 8-3/4 inch rod is essential for maintaining precise mechanical translation between the actuator's telescoping piston rod and the damper's crank arm. Designed for use with the D-3070, D-3153, and D-4073 series, this linkage ensures a non-binding connection, allowing for smooth 90-degree rotation in critical HVAC control systems. Its 5/16-inch diameter construction provides the structural rigidity required to handle the torque of larger dampers up to 25 square feet. Whether you are performing a field conversion or repairing a UL-recognized safety damper assembly, this rod provides the exact dimensions needed to restore factory-spec stroke and alignment. Its high-temperature tolerance makes it suitable for demanding environments where consistent air pressure regulation and damper positioning are non-negotiable for system performance.

• Universal Compatibility: Drop-in replacement for Johnson Controls D-3153 and D-3070 series pneumatic actuators.
• Precision Alignment: 8-3/4 inch length optimized for standard 3-inch stroke applications to prevent mechanical binding.
• Heavy-Duty Construction: Built to withstand the operational stresses of smoke and combination fire/smoke dampers.
• Simplified Installation: Designed for seamless integration with swivel ball joints and slotted crank arm connectors.
• Rugged Durability: Maintains mechanical integrity in high-ambient temperature applications up to 250°F.

What is the diameter of the D-3153-103 linkage rod?
This specific model features a 5/16-inch diameter, providing the necessary strength for pneumatic piston-style actuators without flexing under load.

Can this rod be used for both normally open and normally closed dampers?
Yes, the 8-3/4 inch length is the standard size for most universal mounting configurations, including frame and duct-mounted setups for both NO and NC operations.

Does this rod include the swivel ball joint?
This SKU specifically covers the replacement 8-3/4" Linkage Rod; however, it is fully compatible with standard D-9999-104 ball joints and other JC linkage hardware.

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.