White-Rodgers F89-0214 Well

The White-Rodgers F89-0214 is a heavy-duty immersion well designed for field-proven performance in hydronic systems. Built with a 3.25 inch extended shank (3-1/4"), this well provides the necessary clearance to pass through thick insulation or tank jackets, ensuring the sensing bulb sits directly in the fluid stream for accurate thermal response. It features a standard 3/4 inch NPT connection, making it compatible with a wide range of aquastats and universal hydronic controls from major manufacturers. The precision-machined bore accommodates standard remote bulbs, typically optimized for 3/8" or 7/16" diameters. For any technician dealing with high-efficiency boiler installs or retrofitting older tanks, this extended shank immersion well eliminates the need for improvised adapters while maintaining a pressure-tight seal. High-grade copper construction facilitates rapid heat transfer, allowing your temperature sensing components to react to system fluctuations without lag. When replacing existing wells, ensure the internal depth matches your capillary bulb length to prevent sensor drift or inaccurate high-limit tripping.

• Extended 3-1/4" shank simplifies installation in insulated tanks or boilers where standard wells fall short.
• 3/4" NPT threading provides a secure, leak-proof mechanical connection for high-pressure hydronic applications.
• Compatible with a broad array of White-Rodgers immersion controls and industry-standard temperature sensors.
• Robust material composition ensures long-term resistance to corrosion and scaling in closed-loop heating systems.
• Optimizes sensor accuracy by positioning the bulb deep within the medium for precise HVAC temperature management.

• Will this well fit a standard 1/2" aquastat bulb? Most standard hydronic bulbs fit securely, but always verify your specific bulb diameter against the F89-0214's internal bore to ensure proper thermal contact.
• Can this be used for steam applications? This immersion well is engineered for liquid hydronic systems; always check the specific pressure and temperature ratings of your boilers before installation.
• Is heat transfer grease required? While not always mandatory, applying a high-quality thermal conductive grease inside the well is recommended to eliminate air gaps and improve response time.

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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.