Lochinvar & A.O. Smith 100278133 Pilot Assembly 30067439-890 Secure Porting: Standard 1/4" NPT

Secure Porting: Standard 1/4" NPT threading facilitates leak-free installation with common hardware

3-inch width

Standard NPT Sizing: Features 1" x 1" x 3/4" threading for seamless integration into existing hydronic piping

replacing the 36H32-403 and numerous EF-series valves

the Trane furnace control board sequences the inducer motor pre-purge

Lochinvar & A.O. Smith 100278133 Pilot Assembly 30067439-890 Secure Porting: Standard 1/4" NPTThe Lochinvar & A. O. Smith 100278133 Pilot Assembly is a critical combustion component for maintaining reliable ignition and flame sensing in high efficiency commercial and residential water heaters. As a factory authorized OEM heating part, the 100278133 ensures precise gas flow and millivolt output, securing the burner cycle against intermittent dropouts. This specific assembly serves as the updated, direct replacement for 100165902, featuring