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- AO Smith part number 100347291 is a Gas Valve/Venturi Assembly kit. It is an original equipment manufacturer (OEM) replacement part used primarily to regulate gas and air mixture flow in residential and commercial gas water heaters.
- Merges the gas valve with a venturi tube to blend incoming fuel gas with air before combustion.
- Regulates the precise mix of air and gas to optimize burner efficiency and reduce harmful emissions.
- Custom engineered for the 400/401 series high-efficiency water heaters.
- Features a 2-port design with standardized threaded NPT connections for a leak-free intake line setup.
- Constructed from industrial metal and finished with a corrosion-resistant coating to withstand high internal temperatures.
- Micro-adjusts the raw gas flow rate to maintain constant water temperatures without wasting fuel.
- Works alongside the unit's main CSC control board and flame sensor to completely shut down gas delivery if the blower fails or flame loss is detected.
- Connection TypeNPTFlow Rate2.5 to 3 gpmHeating Capacity100,000 btu/hrManufacturerA.O. SmithManufacturer #100347291MaterialMetalPressure Rating0.5 psiTypeVenturi Assembly