As the central controller for compatible Infinity systems

With a flow rate performance of approximately 250 GPM at 50 PSI and up to 348 GPM at 100 PSI

or insufficient oil returns in the crankcase without breaching the system

replacing a fouled or drifting limit control with this OEM actuator restores the unit to its optimal performance curve

and PVE lubricants make it a standard choice for commercial chillers and industrial cooling racks

Aprilaire 4991 Tube & Screws 320788-704 As the central controller forThe Aprilaire 4991 is a critical Steam Dispersion Tube & Screws assembly designed for seamless integration with Aprilaire whole home steam humidifiers. This genuine HVAC replacement part ensures even moisture distribution within your ductwork, preventing condensation buildup and enhancing the efficiency of your indoor air quality system. Engineered for durability, the Aprilaire 4991 humidifier part features a precision drilled tube that facilitates