GSBmbH

Saganer Straße 26
90475 Nürnberg

+49 (0)911 97911-0
info@gsbmbh.com

FIRESAFE® BSK-E

Fire dampers FIRESAFE® BSK-E

 

  • Fire resistance class up to EI 120 S
  • Available with thermal release or electric spring-return actuator
  • Actuators available for 24 V or 230 V
  • Dimensions:
    150 × 150 mm to 1200 × 1000 mm (in 50 mm increments)
  • Installation options: in solid walls, solid ceilings, lightweight walls and sandwich panel walls
  • Easy inspection and maintenance
  • Hygiene certificate according to VDI 6022

Consisting of:

  • Housing made of galvanised steel / stainless steel 1.4301
  • Damper blade made of calcium silicate
  • Release device 72 °C (fusible link/thermoelectric)
  • Optional spring-return actuator with integrated limit switches
  • Integrated inspection opening

 

 

Technical features

The fire dampers of the FIRESAFE® BSK-E series have been developed for safe use in ventilation and air-conditioning systems. In the event of fire, they prevent fire and heat from spreading through air ducts and achieve a fire resistance class of up to EI 120 S. The robust construction made of galvanised sheet steel (or optionally stainless steel), together with the fire-resistant damper blade, ensures high operational reliability and a long service life.

The dampers have an inspection opening which becomes accessible by pulling out the button assembly with the fusible link (manual version) or the thermoelectric release device (motorised version). The inspection opening has a diameter of 20 mm.

BSK-E fire dampers are equipped with two large inspection openings located above and below the main mechanism.

A special feature of the design is the thermally optimised housing, which reduces heat transfer and thus supports the fire separation between adjacent areas. In combination with the tested leakage classes according to EN 1751, consistently high air tightness is ensured in both the open and the closed position.

Reliable release is provided by a thermoelectric release device or a fusible link with a defined response temperature of 72 °C. This ensures that the damper closes quickly and safely in the event of fire.

The design takes into account current requirements for energy efficiency, operational reliability and ease of maintenance. The optimised construction minimises pressure losses while ensuring reliable operation over the entire service life of the system. The integrated inspection features allow easy checks, maintenance and functional testing while the system is in operation.

Thanks to a wide range of dimensions and versions, FIRESAFE® BSK-E fire dampers can be flexibly integrated into a wide variety of ventilation and air-conditioning systems. The wide range of sizes allows project-specific adaptation and supports designers, installers and operators in meeting modern fire protection requirements.

Combining tested safety, durable construction, easy integration and modern actuator technology, FIRESAFE® BSK-E fire dampers are a future-proof solution for demanding applications in building services engineering.

In addition, FIRESAFE® BSK-E fire dampers meet the hygiene requirements of VDI 6022-1.

 

Fire damper FIRESAFE® BSK-E

Fire resistance: EI 90 S / EI 120 S, tested according to EN 1366-2
Application: For sealing off ventilation ducts between fire compartments
Operating temperature: -20 °C to +50 °C
Maximum air velocity: 12 m/s
Dimensions: 150 × 150 mm to 1200 × 1000 mm
Installation options: Installation in:
-   Solid walls
-   Lightweight walls
-   Sandwich panel walls
-   Solid ceilings
Material:
Galvanised sheet steel
Optional: stainless steel V2A (1.4301)
Version: Manual / motorised
Release:
-   Manual version: fusible link (72 °C)
-   Motorised version: thermoelectric release element

 

 

Free cross-section

Free cross-section of the FIRESAFE® BSK-E with the damper fully open, in m² (W = width, H = height, both in mm):

H \ W 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200
150 0.02 0.02 0.03 0.03 0.04 0.04 0.05 0.06 0.06 0.07 0.07 0.08 0.08 0.09 0.09 0.10 0.10 0.11 0.12 0.12 0.13 0.13
200 0.02 0.03 0.04 0.05 0.06 0.06 0.07 0.08 0.09 0.10 0.10 0.11 0.12 0.13 0.14 0.14 0.15 0.16 0.17 0.18 0.18 0.19
250 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25
300 0.04 0.05 0.07 0.08 0.09 0.10 0.12 0.13 0.14 0.16 0.17 0.18 0.20 0.21 0.22 0.23 0.25 0.26 0.27 0.29 0.30 0.31
350 0.05 0.06 0.08 0.09 0.11 0.12 0.14 0.16 0.17 0.19 0.20 0.22 0.23 0.25 0.26 0.28 0.29 0.31 0.33 0.34 0.36 0.37
400 0.05 0.07 0.09 0.11 0.13 0.14 0.16 0.18 0.20 0.22 0.23 0.25 0.27 0.29 0.31 0.32 0.34 0.36 0.38 0.40 0.41 0.43
450 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.21 0.23 0.25 0.27 0.29 0.31 0.33 0.35 0.37 0.39 0.41 0.43 0.45 0.47 0.49
500 0.07 0.09 0.12 0.14 0.16 0.18 0.21 0.23 0.25 0.28 0.30 0.32 0.35 0.37 0.39 0.41 0.44 0.46 0.48 0.51 0.53 0.55
550 0.08 0.10 0.13 0.15 0.18 0.20 0.23 0.26 0.28 0.31 0.33 0.36 0.38 0.41 0.43 0.46 0.48 0.51 0.54 0.56 0.59 0.61
600 0.08 0.11 0.14 0.17 0.20 0.22 0.25 0.28 0.31 0.34 0.36 0.39 0.42 0.45 0.48 0.50 0.53 0.56 0.59 0.62 0.64 0.67
650 0.09 0.12 0.15 0.18 0.21 0.24 0.27 0.31 0.34 0.37 0.40 0.43 0.46 0.49 0.52 0.55 0.58 0.61 0.64 0.67 0.70 0.73
700 0.10 0.13 0.17 0.20 0.23 0.26 0.30 0.33 0.36 0.40 0.43 0.46 0.50 0.53 0.56 0.59 0.63 0.66 0.69 0.73 0.76 0.79
750 0.11 0.14 0.18 0.21 0.25 0.28 0.32 0.36 0.39 0.43 0.46 0.50 0.53 0.57 0.60 0.64 0.67 0.71 0.75 0.78 0.82 0.85
800 0.11 0.15 0.19 0.23 0.27 0.30 0.34 0.38 0.42 0.46 0.49 0.53 0.57 0.61 0.65 0.68 0.72 0.76 0.80 0.84 0.87 0.91
850 0.12 0.16 0.20 0.24 0.28 0.32 0.36 0.41 0.45 0.49 0.53 0.57 0.61 0.65 0.69 0.73 0.77 0.81 0.85 0.89 0.93 0.97
900 0.13 0.17 0.22 0.26 0.30 0.34 0.39 0.43 0.47 0.52 0.56 0.60 0.65 0.69 0.73 0.77 0.82 0.86 0.90 0.95 0.99 1.03
950 0.14 0.18 0.23 0.27 0.32 0.36 0.41 0.46 0.50 0.55 0.59 0.64 0.68 0.73 0.77 0.82 0.86 0.91 0.96 1.00 1.05 1.09
1000 0.14 0.19 0.24 0.29 0.34 0.38 0.43 0.48 0.53 0.58 0.62 0.67 0.72 0.77 0.82 0.86 0.91 0.96 1.01 1.06 1.10 1.15

 

 

Manual version

Manual spring-return mechanism of the FIRESAFE BSK-E with push button

The manual version of the FIRESAFE® BSK-E fire dampers features a manual spring-return mechanism. It is ergonomically designed and reliably protects all mechanical components from dust and dirt. At the same time, its compact design allows space-saving installation as well as quick and easy replacement of the fusible link.

The main external components include the “Push” button for manually releasing the damper (for testing purposes) and the optional limit switches, which are protected against external influences by a protective cap.

 

Spring-return actuator

Spring-return actuator with thermoelectric release device BAT

The spring-return actuator (24 V/230 V) is equipped with a thermoelectric release device BAT (72 °C) and is designed for use in ventilation and air-conditioning systems. During operation, the actuator moves the damper into the open position while tensioning the integrated return spring.

If the supply voltage is interrupted, the energy stored in the return spring automatically moves the damper back to the closed position.

The integrated Safety Position Lock™ ensures that the fire dampers are reliably held in the closed position in the event of fire, providing the highest level of safety.

 

Dimensions

BSK-E: manual version

Dimensional drawing FIRESAFE BSK-E manual version

BSK-E: motorised version

Dimensional drawing FIRESAFE BSK-E motorised version

FIRESAFE® BSK-E

  • Reliable sealing in the event of fire
  • Versatile installation options
  • Flexible dimensions in 50 mm increments
  • High air tightness
  • Maintenance-friendly design