This internal service assembly includes a new solenoid valve diaphragm

Safety Certified: CSA-approved design featuring a 100% safety shutoff mechanism for reliable gas control

Key Benefits Genuine OEM Williams Part: Ensures exact fitment and factory-spec performance for Forsaire electric furnaces

Integrated Safety: Features a high-limit ECO sensor and flame-sensing shut-off to prevent hazardous gas buildup

This specific interface board is typically designed for single-stage equipment

Lochinvar & A.O. Smith 100111073 Anode 321042-401 This internal service assembly includesProtect your water heater tank from the corrosive effects of localized electrolysis with the Lochinvar & A. O. Smith 100111073 Anode. This OEM water heater part features a 3 4" NPT hex head and a 3 4" diameter aluminum zinc rod, specifically engineered to neutralize sulfur odors (rotten egg smell) while providing sacrificial protection for the tank lining. At a 16 inch length, this KA 90 anode rod is a critical maintenance component for residential