The Ecojay modulating bypass damper includes the standard DSUP or DSEP damper with a pre-wired static pressure switch. Modulating (static pressure controlled) bypass dampers should be used where reliability and quiet operation are needed. This method provides the most accurate and efficient version of pressure relief in the supply duct for any zonig system.

Ecojay Smartzone Bypass Modulation Damper, DBUM Model, 16 in Size, 24 VAC, 2.5 V-A VA, Precision Cut Blade, Galvanized, Power Open, Power Closed Motor, Round, 3-Wire, 18 ga Solid Core Electrical Connection, 30 sec Timing, 18 in L

• Proven design and manufacturing process
• Damper deliver years of reliable operation
• Non-metallic shaft to prevent sweating
• Long-life, quiet nylon bushings and gears
• Precision cut blades
• Adjustable minimum/maximum position
• Accurate and reliable static pressure controlled
• Heavy-duty galvanized damper with 1-crimped and 2-beaded ends
• Precision construction and quality parts for long life and quiet operation
• Full diameter poly gasket for low leakage seal
• Metal shaft with nylon bushings