Aprilaire 4403 Insert 319825-402 Debris Protection: Includes an internal

Debris Protection: Includes an internal inlet filtered screen to prevent sediment from compromising the valve seat

Carrier 50DK508234 Dry Bulb Sensor (TE-637DP-101)

For a complete TJLE assembly

Integrating this HVAC valve repair kit into your maintenance schedule prevents the costly full replacement of the valve body while resolving common bypass or leakage issues

Leak-Proof Seal: Utilizes a specialized Teflon gasket within the rotolock housing to ensure a gas-tight seal under high-pressure conditions

Aprilaire 4403 Insert 319825-402 Debris Protection: Includes an internalThe Aprilaire 4403 Scale Control Insert is a critical humidifier replacement part engineered specifically for the Aprilaire Model 400 series, including the 400A and 400M. This U shaped component serves as the structural frame for the water panel, ensuring it remains properly positioned for optimal evaporation. Designed with a built in float chamber, the 4403 manages water levels effectively to prevent internal leakage and overflow. Its primary