Lennox 79L57 Orifice 328140-751 Field Proven: The Maxitrol 325

Field Proven: The Maxitrol 325 Series is the industry benchmark for reliable gas pressure control and long-term durability

While the housing is durable

and differential pressure

this component integrates a gas cock

The integrated SPNO configuration ensures the circuit only completes when the required pressure threshold is maintained

Lennox 79L57 Orifice 328140-751 Field Proven: The Maxitrol 325The Lennox 79L57 is a critical Natural Gas Burner Orifice engineered specifically for high efficiency Lennox gas furnaces and heating units. This genuine OEM replacement part is precision machined to deliver an exact BTU output by regulating the volumetric flow of natural gas to the burner assembly. Using a Lennox 79L57 Orifice ensures your manifold pressure aligns with factory specifications, preventing issues like incomplete combustion, soot