Midco International 842519 Blower Air Switch 320735-701 Serviceability: The built-in refrigerant access

Serviceability: The built-in refrigerant access fitting enables rapid evacuation

What causes a blocked flue switch to trip

Designed for the Aprilaire 1310 air purifier and models 2310

While the 5/8" x 1-1/8" ODF connections are standard

Midco International 842519 Blower Air Switch 320735-701 Serviceability: The built-in refrigerant accessThe Midco International 842519 Blower Air Switch is a critical OEM replacement part designed for precise pressure sensing and airflow verification in industrial heating and ventilation equipment. As a differential air pressure switch, this component ensures the blower assembly is moving sufficient combustion air before allowing the system to proceed through the ignition sequence. This Midco 842519 blower switch is factory calibrated to maintain exact