The RD-HD Series of round Hand Dampers are
designed for field adjustment of Differential
Pressure and Velocity Control on Round Bypass
Air Duct Runs.
Pursuant to ACCA® Manual Zr, “A balancing hand
damper should be installed in the bypass duct” for
setting adequate resistance to bypass flow.
The RD-HD includes a Heavy Duty Manual
Quadrant allowing Easy & Accurate Field
Adjustment of the Pressure Drop through the
Bypass duct run.
In addition, the RD-HD has a truncated blade
design resulting in 70% maximum closure. This
superior design ensures minimum bypass flow
even if the hand damper is accidentally closed all
the way.
The RD-HD is designed to provide reliable and
quiet Balancing Function at velocities up to 2700
feet per minute.
RD-HD dampers are easy to install and adjust. The
superior design insures long life with no
maintenance and a 5 year warranty.
Specs
–
Application:
Air Quality
Size:
8"
Shape:
Round
Contact
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