The Resideo WV8840C1605 AO Smith Gas Control Valve is a high-quality water heater gas valve designed for use with A. O. Smith, State, and Reliance water heater models. It is compatible with a variety of models and is specifically designed for natural gas power sources. This gas control valve is an essential component in maintaining and repairing home heating systems, ensuring efficient and safe operation. With its reliable brand reputation and compatibility with various models, the WV8840C1605 is a trusted choice for water heater parts in the home improvement category.