Lennox 17J65 Orifice
The Lennox 17J65 Natural Gas Orifice (Part Number LB-69645) is a precision-engineered heating component designed specifically for secondary burner regulation in residential furnaces. With a drill size specification of 0.0935, this OEM Lennox replacement part ensures the exact volumetric flow rate required for efficient combustion and peak AFUE ratings. As a veteran technician knows, maintaining the correct manifold pressure depends entirely on the integrity of the burner orifice; using a genuine 17J65 prevents the fuel-rich or lean conditions that lead to soot buildup and premature heat exchanger failure.
Forged from high-grade brass to withstand thermal expansion and high-velocity gas flow, this 0.0935 natural gas orifice provides the mechanical consistency needed for stable flame patterns across burner tubes. It is compatible with a wide range of Lennox-branded equipment, including residential heating units from Allied, Armstrong, and Ducane. Whether performaning a furnace gas conversion or replacing a clogged port, installing the 17J65 burner part ensures your system operates within factory design parameters.
Key Benefits:
- Precise Gas Regulation: Specifically machined to a 0.0935 diameter for consistent BTU output in natural gas HVAC systems.
- OEM Compatibility: Exact replacement for Lennox LB-69645, avoiding the sizing inconsistencies found in aftermarket alternatives.
- Corrosion Resistance: Durable brass construction prevents port degradation from gas impurities and high-heat environments.
- Optimized Combustion: Helps maintain the correct air-to-fuel ratio to maximize fuel efficiency and reduce carbon monoxide risk.
Common Questions:
- How do I verify the 17J65 orifice size? This part is cross-referenced as a 0.0935 drill size orifice, typically used in specific Lennox high-efficiency furnaces.
- Can this be used for LP conversion? No, the 17J65 is specifically bored for natural gas; liquid propane applications require a different, smaller diameter orifice kit.
- Is this compatible with Armstrong or Ducane units? Yes, as an OEM part for Lennox International brands, the 17J65 fits several Allied Air and Armstrong models.
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.
17J65 is the cross for 76719500
Original: $24.27
-65%$24.27
$8.49Lennox 17J65 Orifice
The Lennox 17J65 Natural Gas Orifice (Part Number LB-69645) is a precision-engineered heating component designed specifically for secondary burner regulation in residential furnaces. With a drill size specification of 0.0935, this OEM Lennox replacement part ensures the exact volumetric flow rate required for efficient combustion and peak AFUE ratings. As a veteran technician knows, maintaining the correct manifold pressure depends entirely on the integrity of the burner orifice; using a genuine 17J65 prevents the fuel-rich or lean conditions that lead to soot buildup and premature heat exchanger failure.
Forged from high-grade brass to withstand thermal expansion and high-velocity gas flow, this 0.0935 natural gas orifice provides the mechanical consistency needed for stable flame patterns across burner tubes. It is compatible with a wide range of Lennox-branded equipment, including residential heating units from Allied, Armstrong, and Ducane. Whether performaning a furnace gas conversion or replacing a clogged port, installing the 17J65 burner part ensures your system operates within factory design parameters.
Key Benefits:
- Precise Gas Regulation: Specifically machined to a 0.0935 diameter for consistent BTU output in natural gas HVAC systems.
- OEM Compatibility: Exact replacement for Lennox LB-69645, avoiding the sizing inconsistencies found in aftermarket alternatives.
- Corrosion Resistance: Durable brass construction prevents port degradation from gas impurities and high-heat environments.
- Optimized Combustion: Helps maintain the correct air-to-fuel ratio to maximize fuel efficiency and reduce carbon monoxide risk.
Common Questions:
- How do I verify the 17J65 orifice size? This part is cross-referenced as a 0.0935 drill size orifice, typically used in specific Lennox high-efficiency furnaces.
- Can this be used for LP conversion? No, the 17J65 is specifically bored for natural gas; liquid propane applications require a different, smaller diameter orifice kit.
- Is this compatible with Armstrong or Ducane units? Yes, as an OEM part for Lennox International brands, the 17J65 fits several Allied Air and Armstrong models.
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.
17J65 is the cross for 76719500
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Description
The Lennox 17J65 Natural Gas Orifice (Part Number LB-69645) is a precision-engineered heating component designed specifically for secondary burner regulation in residential furnaces. With a drill size specification of 0.0935, this OEM Lennox replacement part ensures the exact volumetric flow rate required for efficient combustion and peak AFUE ratings. As a veteran technician knows, maintaining the correct manifold pressure depends entirely on the integrity of the burner orifice; using a genuine 17J65 prevents the fuel-rich or lean conditions that lead to soot buildup and premature heat exchanger failure.
Forged from high-grade brass to withstand thermal expansion and high-velocity gas flow, this 0.0935 natural gas orifice provides the mechanical consistency needed for stable flame patterns across burner tubes. It is compatible with a wide range of Lennox-branded equipment, including residential heating units from Allied, Armstrong, and Ducane. Whether performaning a furnace gas conversion or replacing a clogged port, installing the 17J65 burner part ensures your system operates within factory design parameters.
Key Benefits:
- Precise Gas Regulation: Specifically machined to a 0.0935 diameter for consistent BTU output in natural gas HVAC systems.
- OEM Compatibility: Exact replacement for Lennox LB-69645, avoiding the sizing inconsistencies found in aftermarket alternatives.
- Corrosion Resistance: Durable brass construction prevents port degradation from gas impurities and high-heat environments.
- Optimized Combustion: Helps maintain the correct air-to-fuel ratio to maximize fuel efficiency and reduce carbon monoxide risk.
Common Questions:
- How do I verify the 17J65 orifice size? This part is cross-referenced as a 0.0935 drill size orifice, typically used in specific Lennox high-efficiency furnaces.
- Can this be used for LP conversion? No, the 17J65 is specifically bored for natural gas; liquid propane applications require a different, smaller diameter orifice kit.
- Is this compatible with Armstrong or Ducane units? Yes, as an OEM part for Lennox International brands, the 17J65 fits several Allied Air and Armstrong models.
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.
17J65 is the cross for 76719500
