a blow-down valve is required in the lower equalizing line to clear sediment from the float chamber and test the cutoff operation

Wide Application Range: Compatible with conventional 1 Heat/1 Cool systems and single-stage heat pumps without auxiliary heat

Use this genuine OEM part to ensure your HVAC/R system remains code-compliant

the D-4073-1 is lightweight and resistant to many chemical and atmospheric agents

Common Questions: Is this compatible with York Coleman models

Auburn H4-12-12PK Gauge Glass 319847-401 a blow-down valve is requiredThe Auburn H4 12 12PK Gauge Glass is a high performance borosilicate glass solution designed for critical fluid monitoring in industrial boilers and steam engines. This heavy duty sight glass features a 5 8" outer diameter (OD) and a 12 inch length, providing exceptional thermal shock resistance and durability under high pressure conditions. Each 12 pack contains high clarity tubes equipped with a distinct red line indicator, which uses optical