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The WESTINGHOUSE 661048R is a drill size 48 burner orifice designed for gas furnace applications. The burner orifice meters the flow of gas into the burner assembly, controlling flame size and combustion efficiency. This orifice is a precision-machined fitting sized to a number 48 drill diameter, which determines the gas flow rate for the burner. Licensed HVAC technicians and gas appliance service professionals install this part as part of routine burner maintenance, fuel conversion work, or combustion troubleshooting on residential and light commercial furnaces.
This burner orifice is used in gas-fired furnace burner assemblies where the orifice must be replaced due to wear, corrosion, or damage, or when converting a furnace between natural gas and propane. The correct drill size is critical to safe combustion and must match the furnace manufacturer's specifications for the fuel type and BTU input rating of the unit. This part is appropriate for service work on forced-air furnace systems.
Designed as an OEM-style replacement burner orifice for gas furnace burner assemblies requiring a drill size 48 orifice.
Installation must be performed by a licensed HVAC technician or qualified gas appliance service professional. Shut off the gas supply and disconnect electrical power to the furnace before removing or installing any burner components. Verify that the orifice drill size matches the furnace manufacturer's specification for the fuel type in use, as an incorrect orifice size will result in improper combustion. Work must comply with applicable local codes and IFGC requirements.
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