Product description

The Honeywell 121371A Aquastat Well is a precision-engineered accessory designed to facilitate accurate temperature sensing in hydronic heating and domestic hot water systems. This 1/2 inch copper well assembly provides a protective housing for Aquastat bulbs, ensuring that they can measure water temperature without direct contact with the fluid. The use of high-conductivity copper ensures rapid thermal transfer, allowing the controller to respond quickly to temperature changes for improved system efficiency and safety. This model includes a sturdy mounting clamp that provides a secure, vibration-resistant connection to the boiler or piping. With a standard 3-inch insertion depth, it is compatible with a wide range of Honeywell Aquastat sensors, making it an essential component for maintaining precise thermal control and preventing equipment overheating in residential and commercial boiler applications.

Product highlights

• High-conductivity copper construction for rapid temperature response
• Includes mounting clamp for secure and stable installation
• 1/2 inch NPT connection for standard boiler and piping ports
• 3-inch insertion depth compatible with most Aquastat bulbs
• Protects sensors from direct fluid contact while ensuring accuracy

Specs

• Manufacturer: Honeywell
• Manufacturer Part Number: 121371A
• Material: Copper
• Connection Size: 1/2 inch NPT
• Insertion Depth: 3 inches

Direct replacement models

Honeywell 121371A, Resideo 121371A/U

You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.