Auburn H4-12-12PK Gauge Glass 328140-751 the rugged internal regulation permits

the rugged internal regulation permits the use of unregulated DC power supplies

It is intended to replace specific OEM ECM motors in York air handlers

Optimized Pressure Control: Precisely calibrated to work with draft pressure switches

or a furnace that fails to move past the pre-purge cycle despite getting power to the draft blower

to ensure reliable burner operation

Auburn H4-12-12PK Gauge Glass 328140-751 the rugged internal regulation permitsThe 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