nFrame: High quality extruded aluminium profile with 30 mm flange width as standard. 12, 16, 24 mm flange widths are optional.
nBlades: Extruded Aluminium profile
nBlade supports: Self oiling nylon bushings with 8 mm diameter aluminium rods.
nBlade seals: Foam gasket for air tightness.
nBlade stopper: 20 mm x 20 mm aluminium angle.
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Non return damper is designed to allow airflow in one direction.
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Frame is of high quality extruded aluminium profiled construction with the advantages of corrosion resistance and rigidity.
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Air operated damper blades are fixed to the frame by self oiling nylon bushes with 8 mm dia aluminium pipes.
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Blades are sealed with foam gasket at the bottom to avoid rattling noise and to provide air tight operation.
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Blades open full or to any angle depending on the air velocity. Blades stay in position of opening without fluctuating when there is constant air flow. Blades closes quietly when the air flow stops.
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Designed to maintain a constant pressure level inside pressurized rooms by relieving excess air when it exceeds the desired limit.
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Generally installed on diesel generator, plant rooms ventilation system and exhaust ducting.
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Available in square and rectangular sizes.
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Standard Finishes:
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Natural anodized aluminium finish.
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Powder coated color finish as per RAL color codes.
