Ao Smith 100187872 Gas Valve Venturi Assembly Ng

Product Description

The AO SMITH 100187872 is a natural gas valve and venturi assembly designed for use in AO Smith water heaters. This component controls gas flow to the burner and integrates venturi-style mixing to deliver the correct air-fuel ratio for reliable ignition and combustion. It is a direct OEM-specification replacement part intended for installation by licensed plumbers or qualified water heater service technicians.

This gas valve and venturi assembly is used in residential natural gas water heater applications. It is installed in systems where the original valve has failed or is no longer functioning within specification. The assembly combines the gas valve and venturi into a single serviceable unit, simplifying the replacement process on compatible AO Smith water heater models.

Key Features

• Natural gas configuration for residential water heater systems
• Integrated venturi assembly for proper air-fuel mixing at the burner
• OEM-specification replacement component
• Combined valve and venturi design reduces replacement complexity

Compatibility

Designed as an OEM-style replacement gas valve and venturi assembly for AO Smith natural gas water heaters. Consult the unit nameplate and AO Smith documentation to confirm fitment before installation.

Installation Notes

Installation should be performed by a licensed plumber or certified gas appliance technician in accordance with local codes and the IFGC. Shut off the gas supply and allow the water heater to cool completely before beginning any service work. Use an approved thread sealant rated for natural gas on all threaded connections and verify with a leak-detection solution after restoring gas pressure. Do not attempt to repair or modify the valve assembly.

Technical Specifications

• Fuel Type: Natural Gas
• Component Type: Gas Valve and Venturi Assembly

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100187872