Manual Butterfly Valve Size:13 Inch Diameter Bellmouth adapters are short and

Bellmouth adapters are short and straight ductwork that function as mini-hoods

Vibration can increase damage to adjacent machinery

Available in sizes to 18”

with the airflow and close when the system is not exhausting

Specify whether the accumulator will be mounted in a vertical or horizontal duct run

Manual Butterfly Valve Size:13 Inch Diameter Bellmouth adapters are short andA circular disk mounted on an internal shaft pivots to control airflow from fully open ( 100% flow), to fully closed (shutting off all air), to anything in between. Once the butterfly valve is set, a locking quadrant holds it in place. Known as Butterfly Damper, Butterfly Valve, or Volume Damper Diameters are + 1 8 inch. *The actual product may differ from the product image.