this is a proprietary Utica-Dunkirk part

3 Pneumatic Actuator engineered for reliable modulating or two-position control of HVAC dampers and terminal units

facilitating reliable HVAC zone valve repair

How do I verify if this pulley fits my 1 3/8" shaft

Should I use silicone sealant with this gasket

Lau 60718701 Fan Blade 321702-401 this is a proprietary Utica-DunkirkFor high demand HVACR maintenance, the Lau 60718701 Fan Blade provides a heavy duty solution for condenser units and general ventilation. This 14 inch diameter propeller is engineered with a 23 degree pitch and four high strength aluminum blades, optimized for CW rotation. Designed for maximum airflow efficiency in free air or low pressure environments, it delivers approximately 1810 CFM at 1725 RPM, drawing roughly 0. 123 HP. A key technical feature