While originally designed as an R22 expansion valve

If the internal fan or water distribution components are not rotating despite receiving power

the housing includes two 1/8" NPT gauge ports

it isolates torsional shock to protect bearings and sensitive HVAC equipment

Browning 2AK61H Sheave R-448A While originally designed as anThe Browning 2AK61H Sheave is a precision engineered double groove cast iron pulley designed for high performance power transmission in commercial HVACR systems. This 5. 95" O. D. sheave is manufactured from high grade grey cast iron, ensuring structural integrity and vibration dampening under heavy belt loads. Specifically engineered for A section belts (4L) and 3L fractional horsepower belts, this unit utilizes the versatile H series bushing system,