Lochinvar & A.O. Smith 100187874 Gas Valve//Venturi Assembly 321702-401 such as heat pumps and

such as heat pumps and commercial coolers

Key Benefits: Universal Compatibility: Includes an adapter to house both 2CH threaded and 2C snap-in thermocouples or thermopiles

This 120 Vac spring return actuator utilizes a reliable SPST control signal

0 µA for most York boards—the sensor likely requires cleaning or replacement

For technicians installing or servicing boilers or high-input furnaces

Lochinvar & A.O. Smith 100187874 Gas Valve//Venturi Assembly 321702-401 such as heat pumps andThe Lochinvar & A. O. Smith 100187874 Gas Valve Venturi Assembly is a critical OEM component designed for high efficiency natural gas condensing boilers and water heaters. As a veteran technician knows, maintaining the correct air gas stoichiometric ratio is essential for peak combustion performance. This assembly integrates a precision SIT gas control valve with a specifically calibrated venturi to ensure stable gas pressure regulation across varying