the electrical coil itself is sold separately

By optimizing the flow into the evaporator coil

This pressure switch is typically used in 24V AC control circuits

proportional speed control

Browning AK51X1 Sheave 323080-701 the electrical coil itself isThe Browning AK51X1 Sheave is a precision engineered single groove cast iron pulley designed for reliable power transmission in residential and commercial HVACR systems. Featuring a 4. 95" outside diameter and a 1" fixed bore, this sheave is machined from high grade cast iron to ensure maximum durability and vibration damping. This component is compatible with 3L, 4L, and A section belts, making it a versatile choice for blower assemblies and