Standard 1/2" NPT Ports: Simplifies field installation with standard piping connections

Unused tubing should be carefully coiled (avoiding kinks) and secured to prevent vibration-induced fatigue or rubbing against other components

Key Benefits Direct Drop-In Compatibility: Serves as the official replacement for legacy models 0431305 and 0431311

significantly extending the life of your hardware

Designed as a direct-fit OEM replacement flame rollout switch

Lochinvar & A.O. Smith 100108941 Valve 322838-754 Standard 1/2" NPT Ports: SimplifiesThe Lochinvar & A. O. Smith 100108941 Valve is a natural gas control engineered for precision fuel regulation in high efficiency commercial and residential heating systems. Designed for 3 4" x 3 4" FPT connections, this step opening gas valve ensures controlled ignition and stable combustion by operating with a 0. 7" WC step pressure before transitioning to a 4" WC full manifold pressure. As a critical HVAC replacement part, it is frequently utilized