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Multi-Louver Dampers
Multi-Louver Dampers

Multi-Louver Dampers

Precise Flow Modulation and Balancing for Industrial Ductwork

Fibros Heavy-Duty Multi-Louver Dampers are engineered to provide exceptional flow control, gas balancing, and rapid modulation within expansive air and gas systems. Unlike standard isolation gates, these dampers utilize a series of rotating blades to fine-tune airflow, manage system draft, and maintain exact pressure differentials. Manufactured to meet stringent international EPC standards and trusted in critical infrastructure projects, these dampers ensure smooth, continuous process control in the most demanding heavy-duty environments.

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  • Technical Specifications
  • Features
  • Industry Applications
Valve Type Multi-Louver Damper / Louver Control Damper
Size Range Fully customizable for large-scale rectangular or square ductwork
Design Pressure Standard low-to-medium pressure duct and exhaust systems
Operating Temperature Up to 400°C standard (Custom configurations available for higher heat)
Body / Frame Material Mild Steel (IS 2062), Stainless Steel (SS304/SS316)
Blade Material Mild Steel (IS 2062), SS 304/316/310, Heat-Resistant Stainless Steel
Seat / Sealing Type Overlapping metal-to-metal blades, with optional jamb seals for enhanced shut-off
Flange Type Double Flanged (Square, Rectangular,)
End Connection ANSI 150#, DIN, IS standard, or Custom-drilled to match existing duct profiles
Actuation Options Modulating Electric Actuator, Pneumatic Cylinder with Positioner, or Manual Lever/Gearbox

  • Precision Modulation

  • Opposed or Parallel Blade Action

  • Heavy-Duty Linkage Systems

  • High-Temperature Reliability

  • Frictionless Operation

  • Process Airflow Control

  • Fan Intake & Discharge

  • Environmental Systems

  • Heat Recovery Systems

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