Lochinvar & A.O. Smith 100109217 Gas Valve

For tradesmen looking to restore or maintain high-efficiency heating systems, the Lochinvar & A.O. Smith 100109217 Natural Gas Control Valve serves as the current, engineered standard for precise fuel regulation. This unit is the direct, updated replacement for the now-obsolete 9003407105 and 9003407005 versions, ensuring that residential water heaters and boilers operate with optimized combustion. This gas temperature control valve is a Flammable Vapor Ignition Resistant (FVIR) compliant component, specifically calibrated for natural gas water heater repair and maintenance in models including the GS6, GPX, GCV, GVR, XGV, and XCV series.

Built with a 1-1/4 inch shank and a fixed 4-inch manifold pressure setting, this valve facilitates reliable burner output and consistent temperature modulation. The internal microprocessor allows for precise temperature control and fast response times, while the integrated Energy Cut-Off (ECO) is hard-set at 195°F to ensure system safety during thermal overshoots. As a genuine OEM Lochinvar gas valve, it integrates seamlessly with existing manifold assemblies without requiring extensive field modifications, supporting professional-grade water heater thermostat replacement in demanding environments. This pilot-operated control utilizes a thermopile for 100% gas shutoff capability and safe lighting, making it the preferred choice for service contractors prioritizing reliability and code compliance.

• Enhanced Compatibility: Serves as the official successor to 9003407105, providing a drop-in OEM replacement for legacy A.O. Smith 100 series units.
• Technical Precision: Features a factory-set 4" WC manifold pressure regulator for accurate natural gas flow control.
• Safety Compliance: Fully FVIR related with an integrated ECO cut-off at 195°F and a 160°F maximum temperature rating.
• Field Reliability: Designed for an 1/2 PSI maximum inlet pressure with a robust manual shutoff lever for easy isolation during servicing.

Is the 100109217 compatible with older GCV or GS6 models?
Yes, this valve is the verified successor for residential gas series 100 FVIR water heaters, including the GS6, GPX, GCV, GVR, XGV, and XCV series originally using part number 9003407105.

Does this kit include the wiring harness for the pilot assembly?
This specific part is the gas control valve assembly; it typically does not include separate wire leads. It is designed to interface with your existing thermopile and ignition components.

Can I use this valve for a Propane (LP) conversion?
No, the 100109217 is calibrated strictly for Natural Gas. Using this on an LP system will cause unsafe burner operation and potential equipment damage.

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.