Lochinvar & A.O. Smith 100208446 Valve

The Lochinvar & A.O. Smith 100208446 is a critical safety component designed for high-performance commercial and residential water heating systems. As a direct replacement for RLV2017 and RLV2017K, this T&P relief valve provides dual-action protection against both excessive temperatures and over-pressurization. Engineered with a 3/4 inch FIPT inlet and a 3-inch probe, it is precisely calibrated to discharge at 150 PSI or when temperatures reach 210°F. This specific model is frequently utilized in Lochinvar Copper-Fin series water heaters, including models CW987 through CW2067, ensuring the system operates within its design parameters. With a substantial BTU rating of 1,912,000, this valve is capable of handling high-capacity thermal expansion and preventing catastrophic tank failure. For any veteran technician, ensuring the 100208446 valve is installed within the top six inches of the tank is paramount for accurate temperature sensing and optimal system safety.

• Direct OEM Compatibility: Built to the exact specifications as the Lochinvar RLV2017K, ensuring a seamless fit for A.O. Smith and Lochinvar units.
• High Discharge Capacity: Rated for systems up to 1.912M BTU, making it suitable for large-scale commercial applications.
• Precision Calibration: Reliable 150# pressure relief and 210F temperature cut-offs protect against thermal expansion stresses.
• Technical Reliability: Features a durable 3/4" NPT connection and an extended 3-inch thermal probe for consistent immersion in the hottest water zone.

Is the 100208446 a direct swap for the RLV2017?
Yes, the 100208446 is the updated manufacturer part number and is functionally identical to the RLV2017 and RLV2017K variants. No piping modifications are required for the swap.

Why is my T&P valve dripping after installation?
Dripping usually indicates that the system's static pressure is approaching 150 PSI or thermal expansion is exceeding the capacity of the expansion tank. Check the building's water pressure regulator before assuming a valve defect.

What is the importance of the 1.912M BTU rating?
The BTU rating on a temperature and pressure valve must always exceed the input rating of the heater. This ensures the valve can vent steam/water faster than the heater can generate energy during a runaway firing condition.

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.