Lochinvar & A.O. Smith 100208442 Relief Valve

The Lochinvar & A.O. Smith 100208442 Relief Valve is a critical safety component designed for high-performance boiler pressure management. Engineered to trigger at 50 PSI, this valve provides essential overpressure protection for both residential and commercial hydronic heating systems. Within the trade, the 100208442 is identical to RLV2001 and serves as a direct OEM replacement relief valve for several high-capacity units, including the Lochinvar Knight series (KBN 700/800), CB 500, and FTX 1.0 models. Featuring a standard 3/4 inch connection, it is rated for up to 1,352,000 BTU/hr, making it suitable for larger HVAC system safety requirements. Utilizing genuine Lochinvar boiler parts ensures that the discharge capacity and set pressure align perfectly with original equipment specifications. For technicians in the field, this 50 lb pressure relief valve is the industry standard for maintaining system integrity and preventing equipment damage due to thermal expansion or mechanical failure.

• Direct OEM Compatibility: Verified as an identical match for part number RLV2001, RLV2001K, and 100167387, ensuring a drop-in fit without piping modifications.
• High British Thermal Unit Rating: Rated for 1,352,000 BTU, providing robust protection for high-output commercial boilers and water heaters.
• Precision Pressure Settings: Factory-set to 50 PSI to maintain safe operating parameters and prevent catastrophic vessel failure.
• Broad Application Range: Fits popular Lochinvar and A.O. Smith models such as the FTX 1.0, KBX500, and KBN 700/800.
• Durable Construction: Built to withstand the harsh environments of commercial heating systems while providing reliable, repeatable performance.

• Which models are compatible with this 50 PSI valve? This valve fits a wide range of Lochinvar Knight and Copper-Fin models, specifically those requiring a 3/4" 50# relief set point.
• Can I use the 100208442 if my manual calls for an RLV2001? Yes, the 100208442 is identical to RLV2001 and shares the same technical specifications and physical dimensions.
• What is the connection size for this pressure relief valve? It features a standard 3/4 inch inlet and outlet, typical for most mid-to-high capacity boiler relief lines.

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.