Armstrong Fluid Technology 806168-001 Coupler 321894-708 The Aprilaire 4592 Airflow Proving

The Aprilaire 4592 Airflow Proving Switch is a genuine OEM airflow safety switch engineered to provide precision monitoring of pressure differentials within your HVAC system

and the full set of mounting hardware

Built to meet rigorous manufacturer specifications

V-90 Technical Standards: Built to handle the rigorous duty cycles of industrial air-moving applications and high-efficiency heating equipment

Ensures accurate stem-up and stem-down calibration for VA-715X series synchronous motor actuators

Armstrong Fluid Technology 806168-001 Coupler 321894-708 The Aprilaire 4592 Airflow ProvingThe Armstrong Fluid Technology 806168 001 Coupler is a precision engineered OEM replacement part designed for high performance circulator pumps. Constructed from durable cast iron, this 4 spring type coupler is specifically manufactured to facilitate a secure, vibration dampening connection between the motor and the pump shaft. It is a critical component for maintaining the operational integrity of Armstrong S 45 and S 46 models within hydronic