Aprilaire 4311 Control Electrode 321894-709 range for 325-3 units and

range for 325-3 units and 2-5 PSI for 220 series regulators

the internal components are sensitive to high heat

To restore peak performance and ensure safely regulated gas pressure in residential or light commercial systems

is a heavy-duty externally equalized thermal expansion valve designed for R22 refrigeration systems

Aprilaire 4311 Control Electrode 321894-709 range for 325-3 units andThe Aprilaire 4311 Control Electrode is a critical internal component designed for high performance steam humidifiers, specifically engineered to work seamlessly within the Aprilaire Model 800 series. This replacement electrode plays a vital role in measuring water levels and electrical conductivity within the steam cylinder, ensuring the unit operates at peak efficiency. Designed for precise HVAC humidity control, the 4311 senses when the water has