Ao Smith 100110278 Gas Control Valve Natural Gas 2.25 Inch

Product Description

The AO SMITH 100110278 is a White Rodgers Intellivent thermostat gas control valve designed for natural gas water heaters. It combines gas flow regulation, thermostat control, and pilot safety functions into a single integrated unit. The valve features a 2.25-inch shank length and incorporates a 100% gas shutoff that activates automatically if the pilot flame fails. Licensed plumbers and HVAC technicians install this control as a direct OEM-style replacement. Its safe lighting design permits ignition procedures without exposing the main burner to uncontrolled gas flow, reducing risk during startup.

This gas control valve is rated for heating applications and is specifically suited for residential natural gas water heaters. It is used on the AO SMITH GPCR 40 and GPCR 50 models, Series 200. Installers working on these units will find the 2.25-inch shank fits the existing valve port without modification. This part directly replaces OEM part number 184768-002, making it a straightforward service replacement for failed or malfunctioning controls on applicable units.

Key Features

• 100% gas shutoff on pilot failure — prevents unburned gas from reaching the main burner
• Safe lighting design allows pilot ignition without activating main gas flow
• 2.25-inch shank length matches OEM fitment on GPCR 40/50 Series 200 water heaters
• Integrated Intellivent thermostat and gas valve in a single assembly
• Direct replacement for OEM part number 184768-002
• Natural gas (NG) rated for residential heating applications

Compatibility

Designed for use on AO SMITH GPCR 40 and GPCR 50 water heater models, Series 200. Replaces OEM part number 184768-002.

Installation Notes

This control valve should be installed by a licensed plumber or qualified gas appliance technician in accordance with local codes and the appliance manufacturer's instructions. Shut off the gas supply and allow the unit to cool completely before removing the existing control. Do not overtighten the valve shank connection; use pipe thread sealant rated for gas service. Verify pilot operation and check all fittings for leaks with an approved leak detection solution before returning the appliance to service.

Technical Specifications

• Application: Heating
• Gas Type: Natural Gas (NG)
• Shank Length: 2.25 inches

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100110278