the 1/2-inch bore hub typically includes the required set screw to lock the blade onto the motor shaft flat

Durable OEM Construction: Built with high-grade electrical components to withstand the thermal stress of the furnace cabinet environment

this 0-30 PSI gauge uses a standard 1/8" NPT center back connection

it does not require a secondary common connection

this component is essential for maintaining HVAC system reliability and ensuring stable furnace combustion even during high-demand heating cycles

Lochinvar & A.O. Smith 100109203 Burner 320788-702 the 1/2-inch bore hub typicallyThe Lochinvar & A. O. Smith 100109203 burner assembly is a direct OEM replacement engineered for residential and light commercial natural gas water heaters. This FVIR burner kit serves as the updated factory successor to the 9003382005 burner, ensuring a precise match for units requiring a #33 orifice. Designed for Flammable Vapor Ignition Resistant (FVIR) technology, this assembly maintains critical combustion parameters and manifold pressure to