Smoke Dampers 2590  (300°C/120 Mins) Advanced Air

High Temperature Smoke Dampers 2590 (300°C/120 Mins)

The 2590 has been designed to operate at 300°C for 2 hours to allow the extraction of smoke and toxic fumes during fire conditions. The 2590 incorporates the new unique interlocking opposed blade design that eliminates the need for blade seals which burn out during fire conditions. The blade profile is of aerodynamic double skin construction, and gives a metal to metal seal, which achieves low leakage performance.

The 2590 includes a unique and versatile jackshaft arrangement and knee-lock mechanism that holds the blades closed in the event of the actuator failure.

The jackshaft arrangement allows multiple section units to be connected and driven by one actuator depending on torque requirements. The 2590 damper is available with spigotted connections. Various installation option’s areavailable. This product is flexible and versatile and canbe modified to meet most special requirements on size and installation.

Advanced Air
Profile: Manufacturer
Headquarters: GB
Assortment: Fan coils, Diffusers, Grilles, Dampers
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Product descritipion

Smoke Dampers 2590


In the fully closed position, with power off, the damper will maintain stability and integrity for 4 hours.

  • Independently tested and witnessed by LPCB.
  • Unique double skin blade design that achieves low leakage tested to British and American standards without the need for synthetic blade seals.
  • Closure maintained by the unique “knee-lock” mechanism which prevents blades from reopening the damper.
  • Wide range of actuators are available from Belimo, Honeywell and Johnson's to meet most requirements.
  • All components fitted to the damper so installation simple and straight forward, therefore no additional modification to ductwork.

Control Options

Spring Open

The damper with power on will go to the closed position and power off will return to the open position

Spring Closed

The damper without power the blades will be in the open position and when power applied the blades will close fully shut

Modulating - Volume Control

When power is applied the blades will fully close. From the closed position through a signal 0-10 volts the damper blades can be adjusted between fully open and fully closed allowing volume control. In alarm the power is removed opening the blades within 16 seconds.

Power Open and Closed - No fail safe position

The damper blades are powered open and powered closed that allows the damper to be controlled during a fire situation. When power fails the damper blades will stop and stay in that position.

Blade Indication - Micro switches

To give indication of the blade position to BMS or similar, integral micro switches are supplied as standard.


Material Specification

Blades: Double Skin 1.0mm galvanised mild steel as standard, Double skin 1.0 grade 430 stainless steel optional

Frame: 1.6mmm galvanised mild steel standard, 1.6mm grade 430 stainless steel optional

Frame Corners: Die formed corner channels, button locked for strength and rigidity

Casings: 1.2mm galvanised mild steel standard 1.2mm grade 430 stainless steel optional

Casing corners: Welded mitre corners finished with aluminium aerosol spray.

Linkage: External linkage. Enclosed within the frame and out of air stream. Zinc electroplated mild steel.

Bearings: Oil filled sintered bronze up to 200 degrees C

Axles: 12.7mm diameter zinc electroplated mild steel bolted directly through the blade

Jack Shaft: Zinc electroplated mild steel

Top, bottom and side jamb seals: Cambered grade 301 stainless steel

Wiring Details

Open Signal (9/White)Common (7/Purple)
Closed Signal (5/Green)Earth (Green/Yellow)
Live (Brown)
Neutral (Blue)

The 2590 type dampers with electrical actuators enclosed in a thermal enclosure are supplied to site with the flying leads to the actuator coiled up for on-site connection.

Dimensional data

Frame: 1.6mmm galvanised mild steel standard, 1.6mm grade 430 stainless steel optional

Casings: 1.2mm galvanised mild steel standard 1.2mm grade 430 stainless steel optional

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