Lochinvar & A.O. Smith 100172008 Valve 321142-301 Built for constant air-over (CAO)

Built for constant air-over (CAO) duty

Easy Integration: Features a notched design for verified orientation within the duct detector header

For contractors performing HVAC control board troubleshooting

or a mechanical failure within the switch itself

Lochinvar & A.O. Smith 100172008 Valve 321142-301 Built for constant air-over (CAO)The 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