Johnson Controls D-9502-612 Positioner Spring

The Johnson Controls D-9502-612 Positioner Spring is a critical helical extension component engineered specifically for D-3246 Series pneumatic damper actuators. Built for high-cycle industrial environments, this spring provides the necessary balancing force against control pressure to dictate precise pneumatic actuator positioning. When integrated into a D-9502 positioner assembly, it allows technicians to fine-tune the operating span and starting point, ensuring exact damper modulation. Its heavy-duty construction is designed to withstand the continuous tension requirements of HVAC pneumatic controls, preventing mechanical drift and maintaining system calibration. Whether you are performing a field repair or a full pneumatic system overhaul, utilizing the correct helical extension spring is essential for achieving the intended torque and travel specifications of the D-3246 actuator. This genuine Johnson Controls replacement part ensures seamless compatibility with existing lever arm assemblies for reliable damper control in commercial building automation systems.

• Specifically calibrated for use with D-3246 pneumatic actuators to ensure accurate stroke control.
• Constructed with high-tensile helical steel for superior resistance to fatigue in high-modulation applications.
• Enables precise adjustment of the operating span and starting point when used with D-9502 positioners.
• Reduces system downtime by providing a direct-fit solution for worn or stretched extension springs.
• Maintains pneumatic relay balance to improve overall air handling unit efficiency and response time.

Which actuators are compatible with the D-9502-612?
This specific positioner spring is designated for use with the Johnson Controls D-3246 Series. For D-3153 or D-3073 models, refer to the D-9502-609; for D-3244, use the D-9502-610.

How does this spring affect the pneumatic positioner's performance?
The spring works with the lever arm assembly to impose a balancing force. By selecting different holes on the lever arm and adjusting the spring tension, technicians can modify the PSIG span required to fully stroke the damper.

Can I use an aftermarket spring for my D-9502 positioner?
Using non-OEM springs can lead to calibration errors and inconsistent damper positioning. This Johnson Controls part ensures the spring rate matches the technical requirements of the pilot chamber and relay balance.

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.