Lennox 74K76 Orifice
The Lennox 74K76 Orifice is a precision-engineered LP conversion component designed for specific gas-fired heating units. Engineered to exacting tolerances, this #55 drill size brass orifice ensures the correct gas-to-air ratio required for stable combustion when transitioning from natural gas to liquid propane. For field technicians, verifying the Btu/hr input rating per burner is critical, as this orifice governs the manifold pressure and flow rate necessary to maintain HVAC system efficiency and prevent carboning or incomplete combustion. Built from high-grade brass to resist corrosion and thermal stress, the Lennox 74K76 is a standard replacement part that maintains the integrity of the burner assembly. Proper installation requires a calibrated manometer to ensure the LP gas manifold pressure aligns with the manufacturer’s technical specifications. Utilizing genuine Lennox OEM parts ensures thread compatibility and prevents potential leaks at the gas manifold interface during high-demand heating cycles.
Technical Specifications & Key Benefits
- Precision Machined: Maintains consistent propane gas flow for stabilized flame patterns.
- Durable Brass Construction: High thermal resistance prevents orifice deformation under constant heat.
- Exact OEM Fit: Designed for seamless integration with Lennox gas furnaces and heating modules.
- Efficient Combustion: Optimized for LP conversion kits to ensure proper fuel atomization.
- Standardized Sizing: Industry-standard threading for rapid field replacement during routine maintenance.
Common Questions & Troubleshooting
What is the drill size for the Lennox 74K76?
This specific orifice is a #55 drill size, which is calibrated for specific LP gas pressure requirements in Lennox burner configurations.
Can I use this for a Natural Gas to LP conversion?
Yes, the 74K76 orifice is a primary component used when converting compatible units to liquid propane, provided the entire conversion kit and regulator adjustments are performed.
How do I verify compatibility with my furnace?
Technicians should cross-reference the part number 74K76 with the furnace's rating plate and the official Lennox service manual to confirm the correct orifice size for local elevation and BTU requirements.
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: $1.62
-65%$1.62
$0.57Lennox 74K76 Orifice
The Lennox 74K76 Orifice is a precision-engineered LP conversion component designed for specific gas-fired heating units. Engineered to exacting tolerances, this #55 drill size brass orifice ensures the correct gas-to-air ratio required for stable combustion when transitioning from natural gas to liquid propane. For field technicians, verifying the Btu/hr input rating per burner is critical, as this orifice governs the manifold pressure and flow rate necessary to maintain HVAC system efficiency and prevent carboning or incomplete combustion. Built from high-grade brass to resist corrosion and thermal stress, the Lennox 74K76 is a standard replacement part that maintains the integrity of the burner assembly. Proper installation requires a calibrated manometer to ensure the LP gas manifold pressure aligns with the manufacturer’s technical specifications. Utilizing genuine Lennox OEM parts ensures thread compatibility and prevents potential leaks at the gas manifold interface during high-demand heating cycles.
Technical Specifications & Key Benefits
- Precision Machined: Maintains consistent propane gas flow for stabilized flame patterns.
- Durable Brass Construction: High thermal resistance prevents orifice deformation under constant heat.
- Exact OEM Fit: Designed for seamless integration with Lennox gas furnaces and heating modules.
- Efficient Combustion: Optimized for LP conversion kits to ensure proper fuel atomization.
- Standardized Sizing: Industry-standard threading for rapid field replacement during routine maintenance.
Common Questions & Troubleshooting
What is the drill size for the Lennox 74K76?
This specific orifice is a #55 drill size, which is calibrated for specific LP gas pressure requirements in Lennox burner configurations.
Can I use this for a Natural Gas to LP conversion?
Yes, the 74K76 orifice is a primary component used when converting compatible units to liquid propane, provided the entire conversion kit and regulator adjustments are performed.
How do I verify compatibility with my furnace?
Technicians should cross-reference the part number 74K76 with the furnace's rating plate and the official Lennox service manual to confirm the correct orifice size for local elevation and BTU requirements.
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
The Lennox 74K76 Orifice is a precision-engineered LP conversion component designed for specific gas-fired heating units. Engineered to exacting tolerances, this #55 drill size brass orifice ensures the correct gas-to-air ratio required for stable combustion when transitioning from natural gas to liquid propane. For field technicians, verifying the Btu/hr input rating per burner is critical, as this orifice governs the manifold pressure and flow rate necessary to maintain HVAC system efficiency and prevent carboning or incomplete combustion. Built from high-grade brass to resist corrosion and thermal stress, the Lennox 74K76 is a standard replacement part that maintains the integrity of the burner assembly. Proper installation requires a calibrated manometer to ensure the LP gas manifold pressure aligns with the manufacturer’s technical specifications. Utilizing genuine Lennox OEM parts ensures thread compatibility and prevents potential leaks at the gas manifold interface during high-demand heating cycles.
Technical Specifications & Key Benefits
- Precision Machined: Maintains consistent propane gas flow for stabilized flame patterns.
- Durable Brass Construction: High thermal resistance prevents orifice deformation under constant heat.
- Exact OEM Fit: Designed for seamless integration with Lennox gas furnaces and heating modules.
- Efficient Combustion: Optimized for LP conversion kits to ensure proper fuel atomization.
- Standardized Sizing: Industry-standard threading for rapid field replacement during routine maintenance.
Common Questions & Troubleshooting
What is the drill size for the Lennox 74K76?
This specific orifice is a #55 drill size, which is calibrated for specific LP gas pressure requirements in Lennox burner configurations.
Can I use this for a Natural Gas to LP conversion?
Yes, the 74K76 orifice is a primary component used when converting compatible units to liquid propane, provided the entire conversion kit and regulator adjustments are performed.
How do I verify compatibility with my furnace?
Technicians should cross-reference the part number 74K76 with the furnace's rating plate and the official Lennox service manual to confirm the correct orifice size for local elevation and BTU requirements.
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.
