Lennox 50W74 Gas Valve 318172-701 The Robertshaw 790-400 manages the

The Robertshaw 790-400 manages the timing and safety logic independently of the fuel type

Industrial Grade Reliability: Features robust internal windings and lead connections suitable for frequent cycling in unit heater applications

a 1/2" NPT thread

While the physical appearance may have slight variations in the casing

this genuine OEM part maintains the equipment's original engineering specifications

Lennox 50W74 Gas Valve 318172-701 The Robertshaw 790-400 manages theThe Lennox 50W74 is a direct replacement White Rodgers 36G24 463 natural gas valve designed for high efficiency Lennox gas furnaces. This single stage gas valve operates on a 24V redundant solenoid system, featuring a 1 2" NPT inlet outlet configuration for standard manifold alignment. Engineered for precision fuel regulation, it utilizes an intermittent pilot ignition or direct spark system depending on the furnace control board configuration. The