Vibration Resistant: Engineered for reliability when mounted directly on or near high-vibration compressor racks

As an OEM Viessmann part

This helps verify the functionality of the 24V AC reversing valve signal and ensures the outdoor fan cycles off correctly during the defrost sequence

verifying the pressure switch trip point is essential for system diagnostics

non-spring return solution designed for precise control in HVACR systems

Browning AK74X1 Sheave 320735-701 Vibration Resistant: Engineered for reliabilityThe Browning AK74X1 Sheave is a precision engineered v belt pulley designed for fractional horsepower (FHP) applications in demanding HVACR and industrial drive systems. Constructed from close grain cast iron, this single groove sheave is statically balanced to ensure vibration free operation and extended bearing life. It features a 7. 25 inch outside diameter and a 1 inch finished bore equipped with a standard 1 4" x 1 8" keyway and setscrew for