Lochinvar & A.O. Smith 100277814 Gas Valve 321042-401 while the standard 1NO and

while the standard 1NO and 1NC auxiliary contacts simplify control circuit integration

While it is compatible with standard 24 VAC thermostats

With a 20-micron outlet pad and a 680 PSI max pressure rating

providing field flexibility for liquid propane installations

Technicians should check for continuity across the leads and inspect the molding for cracks or discoloration

Lochinvar & A.O. Smith 100277814 Gas Valve 321042-401 while the standard 1NO andThe Lochinvar & A. O. Smith 100277814 Gas Valve is a critical OEM component engineered for high performance natural gas hydronic and water heating systems. As a professional grade spark ignition gas valve, this unit regulates fuel flow to the burner assembly with precision, ensuring stable combustion and reliable appliance startup. This part is the direct replacement for 100171884, making it the standard choice for maintaining the factory