Lochinvar & A.O. Smith 100171926 Valve 321702-401 Standardized Connections: Features 1/2-inch NPT

Standardized Connections: Features 1/2-inch NPT pipe threading and 1/4-inch male quick-connect terminals for rapid wiring and plumbing

this dual pressure switch handles both regulation and safety monitoring within a single housing

8" H and a lightweight profile of approximately 0

this blower component provides the necessary mass and aerodynamic balance to maintain optimal airflow across evaporator coils and through complex ductwork

The single pole double break configuration ensures precise multi-function operation

Lochinvar & A.O. Smith 100171926 Valve 321702-401 Standardized Connections: Features 1/2-inch NPTThe Lochinvar & A. O. Smith 100171926 Gas Valve Kit (SBN1500) is a critical OEM replacement part designed for high input commercial boilers and water heaters. Engineered for precision gas flow regulation, this negative pressure regulated gas valve ensures the correct air to fuel ratio across the entire firing range. It is specifically calibrated for the SBN1500 model series, providing the necessary BTU input stability required for high efficiency