- Used in heating, ventilating and air conditioning systems for low-leakage applications.
- Joints are welded and protected by aluminium spray coating to prevent rusting.
- Blades are coupled by toothed nylon gears which provides opposed blade operation.
- Hand locking quadrant is provided with clear open/close indication and three intermediate open positions (1/4 – 1/2 – 3/4).
- Foam gasket is sealed across the blade edges to minimise air leakage between the blades.
- Flanged edges are supplied un-drilled as standard.
- Damper without flanges available as option for duct insertion purpose.
- Air leakage from 0.18% to 1.33% only based on tests conducted in accordance with AMCA standard 500-D-98.
Options
- Frame: G.I sheet of thickness up to 2mm available upon request. Aluminium frame is also available for light weight / offshore / exposed area applications.
- Handle: Cast Aluminium.
- Bush: Brass bush, S.S. Ball Bearing.
- Gear Wheel:Aluminium Alloy.
- Low Leakage: S.S Jamb seal.
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