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Non Return Dampers Gravity Louvers

“AIRODYNE” Non-return / Pressure relief dampers have been specifically designed for use in Air-conditioning and Ventilation system, these dampers are air operated and are used for air intake and exhaust, and are also used for pressure relief. These dampers are also referred as Gravity / Back draught dampers.

Construction / Materials
1. The casing frame is robust and rigid assembly formed out of best quality aluminium sheets/galvanized sheet steel of     1.25mm thickness.
2. The blades are formed out of high quality aluminium sheets of 0.6mm / 0.7mm thickness.
3. The bearings are made of PVC/Nylon to give smooth and rattle free operation
4. The blades are fitted with galvanized steel connecting spindle to main casing / frame for rigid and strong construction for     rattle free and smooth operation due to variable air pressure.
5. A galvanized / aluminium angle is fitted internally to main frame to avoid over movement of blades.
6. All joints are welded and sealed for airtight operation and are protected by aluminium spray coating.
Standard types of models :
LG-E Gravity louvre for exhaust or pressure relief
LG-S Gravity louvre for air intake
LG-R Round neck gravity louvre for air exhaust or intake
BD-F Back draught/Non-return damper for duct mounting
BD-S Back draught/Non-return damper for wall mounting
BD-C Back draught/Non-return damper for “C” cleat fixing
Standard sizes :
H 150 200 300 400 500 600 700 800 900 1000 1200
L 100 150 200 300 400 500 600 700 800 900 1000
**Also available in 50mm increments and any combination of H x L
Dimensional Details:
Non-Return Damper Gravity Louvres Performance
Order Procedure
Type Of Fixing
1. Counter sunk screw fixing suffix “S” (Standard supply)
2. Spring clip concealed fixing suffix “C”
1. Natural Anodised Aluminium Finish
2. Powder coated colour finish
3. Galvanised Steel sheet frame for duct mounted type and round neck type
4. Aluminium Mill finish

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