Lochinvar & A.O. Smith 100172008 Valve 321142-301 Pre-Calibrated Precision: Each PTC thermistor

Pre-Calibrated Precision: Each PTC thermistor is calibrated to a standard curve for consistent "plug-and-play" performance

or a mechanical failure within the switch itself

Stable Continuity: Delivers a consistent high-voltage pulse for immediate gas ignition

Built for constant air-over (CAO) duty

Lochinvar & A.O. Smith 100172008 Valve 321142-301 Pre-Calibrated Precision: Each PTC thermistorThe Lochinvar & A. O. Smith 100172008 Valve is a critical gas valve assembly engineered for high efficiency hydronic systems, specifically designed for Knight KB and AW series boilers and water heaters manufactured prior to serial I07. This natural gas valve operates on a negative pressure principle, essential for maintaining the precise fuel to air ratio required by modern modulating condensing boilers. By regulating flow to the burner based on