Lochinvar & A.O. Smith 100170417 Gas Valve

The Lochinvar & A.O. Smith 100170417 Gas Valve is a critical OEM replacement part designed for residential Natural Gas water heaters. This thermostatic control valve, which is the direct identical part to TST1006 and replaces the older 37C73U-724, handles both temperature regulation and safety shut-off functions. Engineered for FVIR (Flammable Vapor Ignition Resistant) systems, this 100170417 Tstatic WTR HTR Nat Gas Valve features an internal microprocessor that provides precise thermostatic response and integrated LED diagnostics for rapid troubleshooting. It is compatible with Lochinvar LS, LT, XS, and XT models, as well as several A.O. Smith residential series. The assembly operates at a regulated pressure of 4.0" W.C. with a 4-inch temperature probe, ensuring reliable pilot ignition and consistent burner performance. For technicians performing a water heater gas valve replacement, this kit provides the high-standard reliability required for modern high-efficiency units.

Key Benefits for Contractors:

• Direct OEM Compatibility: Verified as the exact replacement for TST1006 and 222-46181-01B, ensuring a perfect fit without field modifications.
• Advanced Diagnostics: The built-in LED status indicator allows for immediate identification of flash codes, significantly reducing diagnostic time on-site.
• FVIR System Integration: Designed specifically for Flammable Vapor Ignition Resistant models to maintain system safety integrity.
• Precision Regulation: Maintains a standard Natural Gas manifold pressure of 4.0" W.C. for optimal combustion efficiency.

Common Questions:

How do I troubleshoot the LED flash codes on the 100170417 valve?
The LED light provides specific patterns to diagnose issues such as thermopile voltage drops, high-limit trips, or sensor failures. A single flash every second typically indicates normal operation while the pilot is lit.

Is the 100170417 compatible with Propane (LP) units?
No, this specific model is calibrated strictly for Natural Gas. Using this valve on a Propane system will result in improper manifold pressure and hazardous operating conditions.

Does this gas valve kit include the required gaskets?
Yes, most 100170417 replacement kits include the necessary inner door gaskets and connectors required to maintain the FVIR seal during installation.

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.