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NRDO-F400 V / NRDO-F400 H

NRDO-F400 V / NRDO-F400 H

HORIZONTAL OR VERTICAL OVERPRESSURE DAMPER FOR AXIAL FANS

MANUFACTURING FEATURES

• Made of cold-galvanized steel sheet.
• Overpressure damper NRDO-F400 V / NRDO-F400 H is used in duct and it is installed in the outlet side.
• Available for vertical and horizontal ducting.
• Designed for fan insulation from the rest of the installation and avoid any risk of recirculation.
• The fins of the NRDO-F400 V / NRDO-F400 H damper are opened by the air flow when the fan runs and close under the effect of gravity when fan stops.
• The overpressure damper NRDO-F400 V / NRDO-F400 H (backward) has the shape of a casing taking the dimensions of the standard Casals flanges diameters. On this dimension, two fins of sheet metal are adapted, each one of them turning on an axis that passes through the casing, and they stop at the end with two fixed stops.
• Maximum working temperature in the environment: 60ºC.

Code Name
21774 NRDO-F400 250 H
21788 NRDO-F400 250 V
21775 NRDO-F400 315 H
21789 NRDO-F400 315 V
21776 NRDO-F400 350 H
21790 NRDO-F400 350 V
21777 NRDO-F400 400 H
21791 NRDO-F400 400 V
21778 NRDO-F400 450 H
21792 NRDO-F400 450 V
21779 NRDO-F400 500 H
21793 NRDO-F400 500 V
21780 NRDO-F400 560 H
21794 NRDO-F400 560 V
21781 NRDO-F400 630 H
21795 NRDO-F400 630 V
21782 NRDO-F400 710 H
21796 NRDO-F400 710 V
21783 NRDO-F400 800 H
21797 NRDO-F400 800 V
21784 NRDO-F400 900 H
21798 NRDO-F400 900 V
21785 NRDO-F400 1000 H
21799 NRDO-F400 1000 V
21786 NRDO-F400 1120 H
21800 NRDO-F400 1120 V
21787 NRDO-F400 1250 H
21801 NRDO-F400 1250 V

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