2590 300 deg C for 60 Mins High Temperature Smoke Dampers

The 2590 has been designed to operate at 300°C for 1 hour 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 are available, examples are detailed in our Methods of Installation Manual. This product is flexible and versatile and can be modified to meet most special requirements on size and installation.

Product Information

  • 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 blades 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 open. From the open 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 closing 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

Rectangular Spigotted Models

NDW - Nominal Duct Width

NDH - Nominal Duct Height

Overall Casing Width/Height = Duct Width/Height + 50mm

Minimum Single Section Duct Size: 100mm x 100mm

Maximum Single Section Duct Size: 750mm x 1000mm

For damper sizes below 200mm width or height, the casing length increases. Please contact our Advanced Air sales for full dimensional details.

Circular Spigotted Models

NDD - Nominal Duct Diameter

Overall Casing Width/Height = Duct Diameter + 75mm

Minimum Single Section Duct Size: Ø100mm

Maximum Single Section Duct Size: Ø750mm

For damper sizes below Ø200mm the casing length increases. Please contact our Advanced Air sales for full dimensional details.