Utica-Dunkirk 240009863 Auqastat Refrigerant Always verify the temperature stamping

Always verify the temperature stamping on the original part to ensure the 70°F / 80°F range matches the manufacturer's specification for that specific serial number

Durability: Equipped with a NEMA 2 (IP42) rated enclosure and stall detection to protect the motor from damage during obstructions

the rear housing can be rotated 90° clockwise to accommodate specific equipment configurations

allowing you to flip the handle orientation to accommodate specific piping configurations or clearance constraints

The robust construction is engineered to withstand the thermal stresses of continuous cycling while providing a reliable safety shut-off

Utica-Dunkirk 240009863 Auqastat Refrigerant Always verify the temperature stampingThe Utica Dunkirk 240009863 is a high limit immersion aquastat engineered for precise thermal regulation in hydronic boiler systems. This SPST (Single Pole Single Throw) controller operates within a 140 240F temperature range, functioning as a critical safety or operating limit. Designed to break on temperature rise, it ensures the burner or circulator cycles accurately based on the established setpoint. This unit is an OEM replacement part frequently