Resideo by Honeywell 123872A Copper Immersion Well Assembly 1/2" NPT 3" Insertion

The Resideo by Honeywell 123872A is a copper immersion well assembly designed for use with aquastats and temperature sensing controls in hydronic heating systems, boilers, and hot water applications. This professional-grade well provides a protective housing for temperature sensing bulbs, ensuring accurate temperature measurement without direct contact with the controlled medium.

Key Specifications:

• 1/2" NPT threaded connection for secure mounting
• 3" insertion depth for optimal temperature sensing
• 3/8" bulb diameter accommodates standard sensing elements
• Copper construction for excellent heat transfer and corrosion resistance
• 1-1/2" insulation depth protects against heat loss
• Rated for 255 PSI at 300°F maximum operating conditions
• Compatible with 5/64" capillary diameter sensors

Features and Benefits:

• Durable copper construction ensures long service life in demanding hydronic applications
• Precision-engineered dimensions provide consistent, reliable temperature sensing
• Standard NPT threading allows for easy installation in tanks, boilers, and piping systems
• Protects delicate sensing bulbs from direct contact with water or steam
• Suitable for use with Honeywell aquastats and temperature controls

This immersion well assembly requires professional installation by a qualified HVAC technician. The well is inserted into the tank or vessel, and the temperature sensing bulb is then inserted into the well for accurate, indirect temperature measurement. Mounting clamp sold separately (Part Number 121371).