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Standard materials of construction for critical parts of damper are-

  1.  Body: A36, IS 2062, A516, IS 2002, Corten, SS 304,SS 316, Inconel etc.
  2.  Blade: A36, IS 2062, A516, IS 2002, Corten, SS 304,SS 316, Inconel etc.
  3.  Shaft: En8, SS 410, SS 304,SS 316, Inconel etc.
  4.  Seal: SS 316Ti, Inconel etc.
  5.  Bearing: C.I lined Bush type with Grafoil Sheet maintenance free/ Antifriction
  6.  Shaft Packing: SS 316Ti/ Braided Graphite.


Multi-louver damper is made up of various blades which rotate on their central shaft. All the blades are connected through linkages. The multi-louver damper can be used for isolating or regulating the flow with quarter turn movement of blade. These are two way flow damper. Generally on-off duty multi-louver damper are parallel blades and control/ regulating duty multi-louver damper are opposed blades type.


The body of multi-louver damper is fabricated from different type of material suitable for site condition and client requirement.

These dampers are design for sealing up to 99.9% without seal air system and 100% with seal air system. Type of seals: Omega seal/ Solid seal

Multi-louver dampers can be provided with one side or double side drive as required by client.
Types of drive –
            – Manual by Hand Wheel/ Lever/ Chain/ Winch Pulley Arrangement
– Motorized
– Pneumatic

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