Lochinvar & A.O. Smith 100278133 Pilot Assembly 318423-701 Tampering with the factory seal

Tampering with the factory seal will void the safety certification and may compromise the integrity of the boiler system

which is critical for safety and reducing stress on the insulation

Weatherproof Performance: NEMA 4X housing protects the electrical components in wash-down or outdoor installation sites

allowing sensors to maintain accurate ambient temperature readings without thermal lag

this industrial solenoid valve offers the durability needed for demanding environments

Lochinvar & A.O. Smith 100278133 Pilot Assembly 318423-701 Tampering with the factory sealThe 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