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High percentage of open area in
DDI blade construction results in lower pressure drop.
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Typical DDI BiPlane dampers in
ducts with 3500 ft.per min. velocities cause pressure drops of less than 0.1
inches water column.
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The truss design of DDI BiPlane
lover blades maximizes rigidity as much as three times greater than stressed
skin airfoil blades.
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DDI Biplane Louver dampers
require far less duct space than a conventional double louver.
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DDI BiPlane louver can be
operated with rapid, massive temperature changes.
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DDI BiPlane louver is available
with installed internal insulation.
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Available in any weldable
material.
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Damper Linkage may be parallel
or opposed.
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Damper may have independently
actuated operating sections with different linkage in each section.
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The economy of a single
actuator instead of the two in a conventional double louver), allows the
addition of an independent actuator to the bottom blade in dust laden
horizontal ducts.
