AO Smith 100262939 Service Gas Control Valve NG 2inch

Original price was: $249.87.Current price is: $171.63.

17 in stock

SKU: 1173904 Categories: ,


The AO Smith 100262939 Service Gas Valve, also known as an NG Service Gas Valve Kit, HW, N3, is a critical component for your A.O. Smith water heater. It plays a crucial role in controlling the gas flow to the burner, ensuring safe and efficient water heating. Here’s a breakdown of its key features and functions:


  • Regulates the gas supply to the burner: It opens and closes to control the amount of gas flowing to the burner, ultimately determining the water temperature.
  • Maintains water temperature: The valve works in conjunction with a thermostat to keep the water in the tank at the desired temperature.
  • Safety features: It’s equipped with an electronic gas control system that incorporates LED status indicators for system monitoring and service diagnostics. Additionally, it features a thermal safety shut-off that automatically shuts down the gas flow in case of overheating or other unsafe conditions.


  • Specifically designed for A.O. Smith water heaters, but it can also be compatible with other brands like Reliance, State, American, Whirlpool, and Craftmaster.
  • Please check the model number of your water heater and consult the manufacturer’s specifications for exact compatibility.

Key Features:

  • 2″ CAV design: Suitable for high-capacity water heaters.
  • Natural gas: Operates on natural gas.
  • Electronic gas control: Provides precise control and enhanced safety features.
  • LED indicators: Display system status and diagnostics information.
  • Thermal safety shut-off: Ensures automatic gas shut-off in case of overheating.
  • Durable construction: Built with high-quality materials for long-lasting performance.


  • Efficient water heating: Precise gas flow control helps maintain desired water temperature, reducing energy waste.
  • Enhanced safety: Automatic shut-off features protect against overheating and potential gas leaks.
  • Reliable performance: Durable construction and electronic control ensure long-lasting operation.
  • Peace of mind: Knowing your water heater is equipped with a reliable gas valve provides comfort and safety.

Things to consider:

  • Professional installation: Due to its safety implications, installation should be performed by a qualified technician.
  • Maintenance: Regular inspection and cleaning are recommended to ensure the valve is functioning properly.
  • Compatibility: Verify compatibility with your specific water heater model.

Overall, the AO Smith 100262939 Service Gas Valve is a vital component for ensuring safe and efficient water heating in your A.O. Smith water heater. Its advanced features, reliability, and safety functions make it a valuable investment for your home.

Additional information

Weight 2.2 lbs


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