Lochinvar & A.O. Smith 100109783 Gas Valve

The Lochinvar & A.O. Smith 100109783 Gas Valve is a critical OEM replacement part designed for precise fuel regulation in high-efficiency commercial and residential water heaters. This thermostatic gas valve (part number 184768-000) is engineered to manage manifold pressure and maintain consistent pilot operation under varying inlet pressures. For service technicians, this 100109783 control valve ensures exact temperature modulation, preventing overheating while optimizing combustion efficiency. It is compatible with a wide range of A.O. Smith and Lochinvar boilers and water heaters requiring a low-pressure gas regulator assembly. When performing a gas valve troubleshooting or swap, ensure the millivolt system or electronic ignition interface aligns with the 0.5 PSI rating typical for these units. Utilizing this genuine water heater gas control ensures your equipment remains compliant with original manufacturer specifications for flow rate and BTU output, minimizing downtime and callback risks during rigorous heating cycles.

• Precise Thermal Regulation: Integrated thermostatic control maintains water temperature within narrow tolerances to prevent cycling issues.
• OEM Compatibility: Exact fit for A.O. Smith 184768-000 and Lochinvar systems, eliminating the need for manifold modifications.
• Rugged Housing: Built to withstand commercial boiler room environments with high ambient temperatures.
• Simplified Installation: Standard NPT threading and standard wire terminal locations for rapid field replacement.

What are the symptoms of a failing 100109783 gas valve?
Common indicators include pilot outages, erratic burner flames, or a failure to reach setpoint temperature. Ensure you check for thermopile voltage drops before condemning the valve.

Is the 184768-000 compatible with Propane (LP) or Natural Gas?
This specific model is typically configured for Natural Gas. Always check the regulator spring color and orifice size; a conversion kit may be required for LP applications.

Are the manifold pressure settings adjustable?
Yes, the internal regulator can be tuned, but it must be set using a calibrated manometer to match the technical data plate on the specific heater model.

This item is not eligible for free shipping.

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.