and Small O series valves

the 12-watt unit utilizes a Class F insulation rating

modulating thermal control

While the 028-13946-000 is widely used across the YK

and bleed screw

Browning BK67H Sheave 322055-301 and Small O series valvesThe Browning BK67H Sheave is a professional grade, single groove cast iron pulley engineered for reliable power transmission in HVACR and light industrial applications. This BK series sheave features a 6. 45" outside diameter and is precision machined from high quality close grain cast iron to ensure strict tolerances and concentricity. Designed for versatility, the Browning BK67H utilizes a combination groove profile that is fully compatible with 4L,