Lennox 33J91 Orifice
For technicians performing a propane conversion or repairing a high-efficiency heating system, the Lennox 33J91 Orifice (Part #33J9101) provides the calibrated precision required for safe, optimal combustion. This OEM LP gas burner orifice is machined from heavy-duty brass and features a precise .0545-inch (54.5 drill size equivalent) opening to regulate gas flow at the manifold. Designed with a 7/16-27 NPT thread, it ensures a leak-free, high-pressure seal common in Lennox 80MGF and 80UHG series furnaces, boilers, and water heaters.
Replacing a clogged or incorrect orifice is critical for maintaining the correct fuel-to-air ratio and preventing hazardous conditions like carbon monoxide buildup or burner soot. With its industry-standard .0545 orifice opening, the 33J91 is the specific component used to adjust furnace input ratings when switching from natural gas to liquid propane. By utilizing genuine HVAC replacement parts, contractors ensure compatibility with the gas valve and burner assembly, maintaining the factory-specified performance of the Lennox propane heating system.
Key Benefits for Technicians:
- OEM Precision: Guaranteed 33J9101 sizing for accurate BTU output on LP conversions.
- Propane Compatibility: Specifically engineered for the higher pressure and energy density of LP gas heating systems.
- Durable Brass Build: Resists corrosion and high-temperature fatigue within the burner box.
- Broad Application: Fits a wide range of residential Lennox gas furnaces and commercial heating units.
- Secure Sealing: Standardized 7/16-27 NPT threads provide a reliable, mechanical fit to the burner spud.
Frequently Asked Questions:
What is the drill size for the Lennox 33J91?
The Lennox 33J91 features a .0545-inch orifice, which is often used in propane conversions to limit the gas flow rate appropriately for the higher BTU content of LP gas compared to natural gas.
Can I use this orifice for a natural gas to propane conversion?
Yes, the Lennox 33J91 LP Gas Burner Orifice is a primary component used in conversion kits to adapt the furnace burners for safe operation on liquid propane.
How do I know if this orifice fits my furnace?
This part is compatible with various models, including the 80MGF and 80UHG series. Always verify the required orifice size against the rating plate on your gas manifold and the manufacturer’s conversion instructions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $37.52
-65%$37.52
$13.13Lennox 33J91 Orifice
For technicians performing a propane conversion or repairing a high-efficiency heating system, the Lennox 33J91 Orifice (Part #33J9101) provides the calibrated precision required for safe, optimal combustion. This OEM LP gas burner orifice is machined from heavy-duty brass and features a precise .0545-inch (54.5 drill size equivalent) opening to regulate gas flow at the manifold. Designed with a 7/16-27 NPT thread, it ensures a leak-free, high-pressure seal common in Lennox 80MGF and 80UHG series furnaces, boilers, and water heaters.
Replacing a clogged or incorrect orifice is critical for maintaining the correct fuel-to-air ratio and preventing hazardous conditions like carbon monoxide buildup or burner soot. With its industry-standard .0545 orifice opening, the 33J91 is the specific component used to adjust furnace input ratings when switching from natural gas to liquid propane. By utilizing genuine HVAC replacement parts, contractors ensure compatibility with the gas valve and burner assembly, maintaining the factory-specified performance of the Lennox propane heating system.
Key Benefits for Technicians:
- OEM Precision: Guaranteed 33J9101 sizing for accurate BTU output on LP conversions.
- Propane Compatibility: Specifically engineered for the higher pressure and energy density of LP gas heating systems.
- Durable Brass Build: Resists corrosion and high-temperature fatigue within the burner box.
- Broad Application: Fits a wide range of residential Lennox gas furnaces and commercial heating units.
- Secure Sealing: Standardized 7/16-27 NPT threads provide a reliable, mechanical fit to the burner spud.
Frequently Asked Questions:
What is the drill size for the Lennox 33J91?
The Lennox 33J91 features a .0545-inch orifice, which is often used in propane conversions to limit the gas flow rate appropriately for the higher BTU content of LP gas compared to natural gas.
Can I use this orifice for a natural gas to propane conversion?
Yes, the Lennox 33J91 LP Gas Burner Orifice is a primary component used in conversion kits to adapt the furnace burners for safe operation on liquid propane.
How do I know if this orifice fits my furnace?
This part is compatible with various models, including the 80MGF and 80UHG series. Always verify the required orifice size against the rating plate on your gas manifold and the manufacturer’s conversion instructions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
For technicians performing a propane conversion or repairing a high-efficiency heating system, the Lennox 33J91 Orifice (Part #33J9101) provides the calibrated precision required for safe, optimal combustion. This OEM LP gas burner orifice is machined from heavy-duty brass and features a precise .0545-inch (54.5 drill size equivalent) opening to regulate gas flow at the manifold. Designed with a 7/16-27 NPT thread, it ensures a leak-free, high-pressure seal common in Lennox 80MGF and 80UHG series furnaces, boilers, and water heaters.
Replacing a clogged or incorrect orifice is critical for maintaining the correct fuel-to-air ratio and preventing hazardous conditions like carbon monoxide buildup or burner soot. With its industry-standard .0545 orifice opening, the 33J91 is the specific component used to adjust furnace input ratings when switching from natural gas to liquid propane. By utilizing genuine HVAC replacement parts, contractors ensure compatibility with the gas valve and burner assembly, maintaining the factory-specified performance of the Lennox propane heating system.
Key Benefits for Technicians:
- OEM Precision: Guaranteed 33J9101 sizing for accurate BTU output on LP conversions.
- Propane Compatibility: Specifically engineered for the higher pressure and energy density of LP gas heating systems.
- Durable Brass Build: Resists corrosion and high-temperature fatigue within the burner box.
- Broad Application: Fits a wide range of residential Lennox gas furnaces and commercial heating units.
- Secure Sealing: Standardized 7/16-27 NPT threads provide a reliable, mechanical fit to the burner spud.
Frequently Asked Questions:
What is the drill size for the Lennox 33J91?
The Lennox 33J91 features a .0545-inch orifice, which is often used in propane conversions to limit the gas flow rate appropriately for the higher BTU content of LP gas compared to natural gas.
Can I use this orifice for a natural gas to propane conversion?
Yes, the Lennox 33J91 LP Gas Burner Orifice is a primary component used in conversion kits to adapt the furnace burners for safe operation on liquid propane.
How do I know if this orifice fits my furnace?
This part is compatible with various models, including the 80MGF and 80UHG series. Always verify the required orifice size against the rating plate on your gas manifold and the manufacturer’s conversion instructions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
