TRS

Description

The TRS smoke damper is designed for high-temperature smoke exhaust applications in tunnels, transport infrastructure, car parks, and industrial facilities. Compliant with BS 476 Part 20, it provides fire resistance and full operability at temperatures up to 400°C for 2 hours (250°C for 3 hours).

Thanks to its reinforced design and large free area, the TRS damper enables high-capacity and controlled smoke exhaust during fire events. It can be used as a tunnel smoke damper, fan isolation damper, or fire safety damper in industrial HVAC systems.

The TRS damper features a robust construction with a 3 mm welded frame, reinforced aerodynamic blades, high-temperature silicone seals, and multiple pneumatic or electric actuation configurations.

Characteristics

• Type: Smoke damper

• Function: Shut-off

• Standards: BS 476 Part 20 / French Interministerial Circular No. 2000-63 / UL 555S

• Minimum size: W 200 × H 250 mm

• Maximum size: W 2500 × H 2500 mm

• Blade airtightness: Class 3 according to EN 1751

• Casing airtightness: ATC3 according to EN 1751 (formerly Class C)

• Maximum operating pressure: 10,000 Pa

• Maximum air velocity: 25 m/s

• Fire resistance rating: 400°C / 2h and 250°C / 3h

• Materials: Galvanized steel or stainless steel

• Actuation: Manual or motorized (electric or pneumatic)

Performances:

Airtightness

• TRS: Class 3 according to EN 1751

• TRS-T: Class 3 according to EN 1751 + certified in accordance with French Interministerial Circular No. 2000-63

Certifications

• BS 476 Part 20

• UL 555S

• Integrity and flame tightness maintained for 4 hours following the ISO 834 fire curve at temperatures exceeding 1,150°C

Pressure rating

The TRS damper is designed to withstand differential pressures of up to 10,000 Pa with a 1,250 mm blade length in the galvanized steel version.

Fire resistance rating

• 250°C for 3 hours

• 400°C for 2 hours

• Full operability maintained throughout the test

Applications

• Road tunnels

• Railway tunnels

• Metro systems

• Underground car parks

• Industrial smoke exhaust systems

• Fan isolation

• Fire safety systems

• High-pressure ventilation systems

• Critical industrial installations

• Emergency ventilation systems