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

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

The R47430-002 is engineered for energy-efficient HVAC performance and features durable internal windings to prevent premature burnout

The McDonnell & Miller 332800

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

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