Multi Louvre Damper for Power Plants

UGES Multi Louvre Dampers provide fine-regulation airflow control in U.S. power plant ventilation, cooling, and auxiliary air systems. With opposed or parallel blade configurations, these dampers deliver precise throttling for cooling tower fan inlets, turbine hall ventilation, and auxiliary boiler air supply systems.

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Multi Louvre Damper Key Specifications

Blade Material

SS 304 / galvanized steel louvre blades with stainless steel linkage hardware

Temperature Rating

Ambient to 250°C for auxiliary air; weather-sealed for outdoor installations

Actuation Type

Electric actuator with modulating or on-off control; manual gear option available

Size Range

400 mm × 400 mm to 3000 mm × 3000 mm for wall, duct, and penthouse mounting

Blade Action

Opposed-blade for linear throttling characteristic or parallel-blade for isolation

Leakage Class

Class II low-leakage per AMCA 500-D; Class III option for tight shutoff

Industrial Applications

Cooling Tower Fan Inlet Control
Regulates air intake to cooling tower fan cells, optimizing condenser cooling water temperature during seasonal load variations.
Turbine Hall Ventilation
Controls fresh air supply and exhaust volumes in the turbine building to maintain safe working temperatures and positive pressurization.
Auxiliary Boiler Air Intake
Modulates combustion air supply to auxiliary and startup boilers, ensuring proper air-fuel ratio during boiler light-off and low-load operation.

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