Lochinvar & A.O. Smith 100112663 Sensor 319848-301 facilitating a secure gas-tight connection

facilitating a secure gas-tight connection to the pilot tubing or manifold assembly

the Watts C4 copper float provides the structural integrity required for precise buoyancy and long-term HVAC water level management in critical mechanical assemblies

What mounting orientation is required

Reduced Wiring Costs: Supports a transmission distance of up to 500 feet

blue flame targeted directly onto the thermocouple for precise heat transfer

Lochinvar & A.O. Smith 100112663 Sensor 319848-301 facilitating a secure gas-tight connectionThe Lochinvar & A. O. Smith 100112663 Sensor is a critical OEM Flame Vapor Sensor engineered for high performance gas fired water heaters and boilers. This FVIR (Flammable Vapor Ignition Resistant) component is a primary safety interface, designed to detect the presence of combustible vapors around the unit and trigger an immediate system lockout to prevent accidental ignition. As a genuine 100112663 replacement part, it ensures precise resistance