Lochinvar & A.O. Smith 100110857 Gas Valve

The Lochinvar & A.O. Smith 100110857 Gas Valve is a heavy-duty OEM replacement part designed for precision fuel regulation in high-demand commercial water heaters and boilers. Engineered to operate on 24V HVAC controls, this natural gas valve features a pre-set 3.5" WC manifold pressure to ensure stable combustion and optimal thermal efficiency. With a 1/2" NPT inlet and a 3/4" NPT outlet, it provides a secure, leak-resistant connection points required for high-volume gas flow. This gas control kit is a direct match for various A.O. Smith BTR and Lochinvar commercial series models, including the 120, 154, 180, and 250/A units. Technicians can rely on its robust internal solenoid construction to handle frequent cycling while maintaining strict safety standards in demanding mechanical environments. When troubleshooting ignition failures or inconsistent burner flames, installing this genuine 100110857 gas valve kit restores factory-spec performance and minimizes system downtime.

• Precision Gas Regulation: Factory-calibrated to 3.5" WC for consistent natural gas delivery and burner stability.
• Direct OEM Compatibility: Proper fitment for A.O. Smith and Lochinvar commercial water heaters, eliminating field modifications.
• Enhanced Flow Capacity: Features a 1/2" x 3/4" configuration to accommodate the higher BTU requirements of commercial-grade heating systems.
• Reliable 24V Operation: Designed for seamless integration with standard low-voltage HVAC control circuits and ignition modules.

• Will this valve work with Propane (LP) systems? No, the 100110857 is strictly designed for Natural Gas applications. Converting this valve is not recommended as it is factory-set for 3.5" WC.
• Is this a direct replacement for my BTR commercial water heater? Yes, this part is the designated replacement for several A.O. Smith BTR series models. Always verify your specific model and serial number before installation.
• Does this kit include the necessary wiring or harness? This technical kit provides the core gas valve assembly; however, we recommend inspecting your existing 24V wiring for any signs of heat damage during the swap.

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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.