Lochinvar & A.O. Smith 100171926 Valve 321702-401 An integrated internal check valve

An integrated internal check valve makes this unit fully compatible with heat pump applications

The integrated aluminum type wheel offers a distinct tactile grip for manual isolation

Operating at a 336V rating

Proof of Closure Switch: Built-in interlock switch provides positive mechanical verification of the valve’s closed position for enhanced safety compliance

Key Benefits for Technicians: Direct OEM Compatibility: Verified fit for A

Lochinvar & A.O. Smith 100171926 Valve 321702-401 An integrated internal check valveThe 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