This valve is primarily used in Trane and Oxbox residential furnaces

ensuring the HVAC temperature sensor delivers accurate outdoor air data to the system's microprocessor for optimal efficiency

Technicians typically observe low head pressure accompanied by high suction pressure

though resistance varies precisely with temperature for controller interpretation

Browning AK94H Sheave R-448A This valve is primarily usedThe Browning AK94H Sheave is a robust, single groove cast iron sheave engineered for dependable power transmission in fractional horsepower (FHP) belt drive systems. With a precise 9. 25 inch outside diameter, this sheave is designed for optimal performance with H Series bushings, ensuring a secure and adaptable fit for various shaft sizes from 3 8 to 1 1 2 inches. It accommodates 3L, 4L, and A section belts, making it a versatile component for a wide