White-Rodgers F89-0036 Well

The White-Rodgers F89-0036 is a professional-grade 1/2" NPT immersion well designed for heavy-duty hydronic heating systems and boiler applications. Engineered for precision and longevity, this copper thermowell features a standard shank with a 3-1/2" insertion length, specifically sized to accommodate a 7/16" temperature sensing bulb. This design allows contractors to service or replace control bulbs without the need to drain the entire system, significantly reducing labor time and maintenance overhead during service calls.

Built to interface seamlessly with aquastat controllers, this well is a direct fit for White-Rodgers 11B06, 11B37, and 1182 series controls. By isolating the sensor from direct fluid contact while maintaining high thermal conductivity, the F89-0036 ensures responsive and accurate temperature monitoring in closed-loop systems. Whether you are performing a new installation or a field replacement, the 1/2" NPT pipe thread provides a reliable, leak-free seal in standard boiler tappings and storage tanks.

• System Efficiency: Enables bulb removal for testing or replacement without depressurizing or draining the hydronic loop.
• High Thermal Transfer: Premium copper construction ensures rapid heat conduction for accurate thermostat response.
• Universal Compatibility: Standard 1/2" NPT connection fits most residential and light commercial boiler configurations.
• Field-Proven Reliability: Specifically engineered for White-Rodgers hydronic controls to ensure a precise mechanical fit.

• What controls are compatible with this well? It is designed for use with White-Rodgers/Emerson 11B06, 11B37, and 1182 series controllers featuring a 3-1/2" x 7/16" bulb.
• Can this be used in potable water systems? Yes, the copper construction is suitable for various closed-liquid systems, including hot water tanks and boilers.
• Do I need pipe sealant for installation? Yes, a high-quality pipe sealant or thread tape should be applied to the 1/2" NPT threads to ensure a pressure-tight seal.

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.