It is typically mounted on the barometric draft control or the draft hood

This sensor provides continuous feedback on the damper's exact position to the building management system

2-inch outside diameter and 43

provided the linkage kit is properly aligned to avoid side-loading the actuator bearings

verify the specific material requirements for your application

Johnson Controls D-251-6003 Diaphragm 30067439-890 It is typically mounted onThe Johnson Controls D 251 6003 is a high performance replacement diaphragm specifically engineered for pneumatic actuator maintenance and repair. As a genuine Number 4 actuator part, this single piece diaphragm ensures a positive seal and consistent pressure response in critical HVAC and industrial machinery control systems. Designed for field service by veteran technicians, the D 251 6003 provides the necessary flexibility to regulate fluid or gas