Lochinvar & A.O. Smith 100172004 Gas Valve

The Lochinvar & A.O. Smith 100172004 Gas Valve is an essential OEM replacement component designed for 24V commercial and residential heating systems. As a direct substitute for part number VAL3202, this combination gas valve identifies and regulates natural gas flow to ensure stable burner manifold pressure. This specific 24V gas control assembly is engineered for high-efficiency boilers and water heaters, including the Lochinvar Knight KBN211 and SNR200 series. By utilizing a negative pressure regulation design, it integrates seamlessly with blower-driven combustion systems, moving gas from the inlet to the venturi for a precise air-to-fuel ratio.

For technicians troubleshooting ignition lockout or "GV/Relay Fail" codes, the 100172004 gas valve assembly offers the reliability of factory-matched specifications. This replacement gas valve is critical for maintaining system safety, preventing overheating, and optimizing heat distribution across various A.O. Smith water heater and Lochinvar boiler models. Field installation is streamlined via the standard wiring harness connections, ensuring that the 24V signal from the control board translates into accurate valve actuation without the risk of non-OEM mechanical failure.

• Direct OEM Replacement: Fully compatible with VAL3202, ensuring a drop-in fit for Lochinvar Knight KBN211 and SNR200 boilers.
• Negative Pressure Regulation: Specifically designed to work with blower-assisted combustion for precise gas/air mixture control.
• High-Efficiency Performance: Maintains optimal burner operation to prevent ignition failure and nuisance lockouts.
• Industrial Build Quality: Robust construction minimizes the risk of internal corrosion or diaphragm failure in demanding HVAC environments.

Is the 100172004 compatible with older Lochinvar models?
Yes, this valve is the designated replacement for the VAL3202 gas valve frequently found in older Knight series boilers. Always verify the part number in the unit-specific service manual.

What are the signs of a failing gas valve in these units?
Common indicators include ignition lockout codes, a "hump" or vibrating sound during startup, or the system having 24V at the valve pins without gas flow appearing at the outlet.

Can this valve be used for Propane (LP) conversions?
The 100172004 is typically configured for Natural Gas. For LP applications, a manufacturer-approved conversion kit or a specific LP valve model must be used to ensure safe manifold pressure.

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.