Lennox 10F31 Restrictor Assembly 340793-762 this Apollo Valves 18C-500 series

this Apollo Valves 18C-500 series unit should be installed with the 4" probe fully immersed in the hot water within the top 6 inches of the tank

Field Serviceable: Features a 1/4" NPT drain port for routine sediment flushing and system maintenance

making it a universal choice for fan and pump drives up to 25 horsepower

Professional technicians rely on the 904804 to ensure balanced HVAC airflow distribution

Standard plumbing P-traps do not provide the necessary backpressure or safety float ball required for these sealed combustion systems

Lennox 10F31 Restrictor Assembly 340793-762 this Apollo Valves 18C-500 seriesThe Lennox 10F31 Restrictor Assembly is a high precision refrigerant metering component engineered for Lennox HVAC systems, including residential air conditioners and heat pumps. This OEM Lennox part (MPN 103893 01) is critical for maintaining the correct pressure drop across the evaporator coil, ensuring optimal refrigerant flow management and system thermal efficiency. Designed as a rugged fixed orifice metering device, the 10F31 is a reliable