Product description

Ensuring accurate thermal feedback in larger piping systems requires robust hardware like the Honeywell 121371B Aquastat Well. This 3/4 inch copper well is designed to house temperature sensing bulbs for Aquastat controllers in hydronic heating systems, providing a sealed interface that allows for sensor maintenance without draining the system. The copper construction is chosen for its excellent thermal conductivity, ensuring that the sensor inside detects temperature fluctuations almost instantaneously. This model features a 3-inch insertion depth and comes complete with a mounting clamp to ensure a secure and rattle-free installation. By providing a stable and conductive environment for the Aquastat bulb, the 121371B helps the heating system maintain consistent temperatures, improving overall energy efficiency and protecting the boiler from reaching dangerously high temperature limits.

Product highlights

• 3/4 inch NPT connection for larger boiler and manifold ports
• Durable copper well for maximum thermal sensitivity and accuracy
• Allows for sensor removal and service without system drainage
• Includes integrated mounting clamp for a complete installation
• Standard 3-inch insertion depth fits most industrial Aquastat bulbs

Specs

• Manufacturer: Honeywell
• Manufacturer Part Number: 121371B
• Material: Copper
• Connection Size: 3/4 inch NPT
• Insertion Depth: 3 inches
• Bulb Compatibility: 3/8 inch diameter

Direct replacement models

Honeywell 121371B, Resideo 121371B/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.