Designed for 2-pipe high-volume output systems

protecting sensitive electronics

and vent float required for a full rebuild

Combustion Stability: Maintains the specific venturi effect required for proper exhaust scavenging and reliable pressure switch closure

maintaining the correct spring range is essential for overcoming actuator load and ensuring that damper stroke remains proportional to the controller's output signal

Johnson Controls V-9502-6801 Positioner Spring Designed for 2-pipe high-volume outputThe Johnson Controls V 9502 6801 Positioner Spring is a critical component for fine tuning the pneumatic actuator response in legacy HVAC control systems. Specifically designed for use with V 3000 Actuated Valves, this spring establishes a fixed operating span, ensuring precise valve positioning and stable flow control. Unlike other series where the span is field selectable via lever arm positioning, the V 3000 series relies on specific spring rates