While this is a single-speed 1

technicians can maintain precise flow modulation without the cost of a full valve body replacement

Enhanced Safety: Prevents gas valve energization if the venting system is obstructed or the inducer motor fails

Universal Application Support: Suitable for everything from irrigation and sump pump drainage to high-level alarms and steam generator feedwater management

provided the service technician applies the correct conversion factor to the flow (SCFH) based on the specific gravity of the gas

EWC Controls URD-14 Damper 318518-761 While this is a single-speedFor high performance zone control, the EWC Controls URD 14 Damper delivers professional grade reliability and precision airflow management. Built for contractors who require a robust solution, this 14 inch round motorized damper features an integrated Poron sealing gasket and a double layered blade design, ensuring a tight seal with less than 2% leakage even in systems with higher static pressures. The 24 gauge galvanized steel construction,