White-Rodgers F89-0062 Well

The White-Rodgers F89-0062 is a professional-grade 1/2-inch NPT immersion well engineered for direct mount to control applications in high-demand hydronic heating systems. As a critical thermal interface, this brass immersion well is designed specifically for White-Rodgers aquastats and limit controls, including the 11B18, 11B05, 11B55, and 1131 series. By utilizing a standard shank length of 2-13/16 inches, it provides the necessary immersion depth for accurate sensing while acting as a reliable thermally conductive well that isolates the sensing bulb from the system fluid. This allows technicians to perform sensor maintenance or diagnostic swaps without the need to drain the boiler or system piping. The F89-0062 well features a precision-machined 1/2" NPT well spud for a leak-proof seal in standard pipe tappings. For contractors managing residential boilers or industrial water-based systems, this OEM White-Rodgers accessory ensures the temperature sensing bulb remains seated and responsive, maintaining tight system differentials and consistent boiler high-limit protection.

• Direct Mount Integration: Designed for seamless direct mounting to control units, eliminating the need for specialized adapters or extra hardware during installation.
• Closed System Access: Facilitates easy removal of the temperature control bulb for testing or replacement without depressurizing or draining the hydronic system.
• Superior Thermal Transfer: The brass and copper construction ensures rapid heat conduction to the sensing element for precise high-limit and operating control response.
• Broad Compatibility: Universally interchangeable with various White-Rodgers temperature controls, supporting standard 1/2" NPT pipe tapping.

Is the F89-0062 compatible with other brands' sensing bulbs?
While sized for standard 1/2" NPT ports, this immersion well is specifically optimized for White-Rodgers sensing bulbs and controls. Always verify the bulb diameter and shank length to ensure the sensor seats fully for accurate thermal readings.

What is the primary application for this immersion well?
It is used in closed-loop hydronic systems where the control must monitor liquid temperature. It is most commonly found in boiler high-limit, circulator control, and secondary loop sensing applications.

How do I ensure a leak-proof installation in a threaded port?
The 1/2" NPT connection requires appropriate pipe sealant or Teflon tape. Ensure the well spud is torqued correctly into the tapping to withstand system pressure while maintaining the direct mount orientation for the control head.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.