Designed with a lead-free copper silicon alloy body

Safety Compliance: Ensures immediate burner circuit interruption during low water events to protect the heat exchanger

Direct OEM Compatibility: Fits Lochinvar FTX models (400-725 L/N) and corresponding A

This industrial-grade control hardware is essential for maintaining accurate building automation system (BAS) air mixing and ventilation performance

it provides the necessary compression to offset flange irregularities

BROAN-NuTone 509 Fan 320788-703 Designed with a lead-free copperFor contractors demanding reliable, direct discharge ventilation, the BROAN NuTone 509 Fan delivers robust performance. Engineered for through the wall installation, this unit is ideal for managing humidity and odors in utility spaces. With an airflow rating of 180 CFM and a sound level of 6. 5 Sones, it efficiently moves air without excessive noise, making it suitable for laundry rooms, workshops, and even single car garages up to 195 sq. ft. The