Lennox 50J94 - (LB-65700) Orifice 0.0625 – Precision Gas Flow Component for HVAC Systems
The Lennox 50J94 (LB-65700) Orifice is a factory-specified component designed for precise regulation of gas flow within heating systems. With a bore diameter of 0.0625 inches (1/16"), this orifice ensures accurate fuel delivery for optimal burner performance, combustion efficiency, and system safety.
Key Features:
- Precise Orifice Size: Engineered with a 0.0625" opening to provide a controlled gas flow rate tailored to specific Lennox equipment requirements.
- Durable Construction: Manufactured from high-quality brass or equivalent corrosion-resistant material for long-lasting performance in demanding HVAC environments.
- OEM Compatibility: Designed and approved for use in compatible Lennox gas furnaces and heating units, ensuring seamless integration and maintaining UL/CSA compliance.
- Application-Specific: Used in various Lennox models to regulate the air-fuel mixture ratio for safe and efficient combustion across a range of BTU inputs.
- Easy Installation: Threaded design allows for secure fitting into the gas manifold or burner assembly without requiring modifications.
- Replacement during routine furnace servicing or burner tuning
- Matching specific altitude or gas type requirements (natural gas or LP, depending on model configuration)
- Part of a burner conversion or retrofit kit
- Part Number: 50J94
- Manufacturer Part Number: LB-65700
- Orifice Size: 0.0625 inches (1/16")
- Material: Brass (typical)
- Function: Gas flow restriction/orifice for burner system
- Compatibility: Select Lennox furnaces and heating systems (verify model requirements)
Why Choose Beenimax.com?
At Beenimax, we supply only 100% genuine Lennox OEM parts to ensure your HVAC system runs at peak performance. Fast shipping, expert customer support, and reliable inventory make us a trusted source for contractors and homeowners alike.
Ensure safe, efficient operation of your Lennox system—order the 50J94 Orifice today.

