In pneumatic control loops

Efficient Heat Transfer: Optimized coil density promotes maximum heat exchange

It manages time-and-temperature defrost logic to prevent evaporator coil icing

this fitting is often referred to by its 3/4" Outside Diameter (OD)

Lennox 47K31 Blower Wheel 30067439-890 In pneumatic control loopsMaintaining proper static pressure and airflow is critical for system longevity, and the Lennox 47K31 Blower Wheel is the professional grade solution for restoring factory spec performance. This 12" x 10. 5" galvanized steel blower wheel features 54 precision pitched blades designed for clockwise (CW) rotation from the hub end. Engineered with a 1 2" bore diameter, this concave hub component ensures a secure fit on direct drive blower motors,