Flange expansion joint without arch
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Smoke extraction fan expansion jointwith self-sealing full faced flanges
Smoke extraction fan expansion joint with self-sealing full-faced flanges, suitable for round or rectangular duct cross-sections. The product features straight or conical fabric construction with single-part backing flanges on both sides, long-term service up to 120°C. It offers excellent pressure resistance (±15,000 Pa at room temperature) and accommodates 50 mm axial compression and 20 mm lateral displacement. Widely used in automatic smoke extraction systems in buildings and tunnels for vibration compensation and sound isolation.
Smoke Extraction Fan Expansion Joint – High-Temperature, Self-Sealing Fabric Design
Overview:
Our smoke extraction fan expansion joints are specially designed for high-temperature applications, providing reliable vibration compensation and sound isolation in smoke extraction systems for buildings and tunnels. These joints are suitable for both round and rectangular duct cross-sections and can be tailored to your specific installation requirements.
Key Features:
Design: Straight or conical fabric expansion joints, silicon-free, with self-sealing full-faced flanges.
Flanges: Single-part backing flange on both sides ensures secure and leak-proof installation.
Test Temperature: Tested for continuous operation at 600°C for 120 minutes.
Test Vacuum: 1,500 Pa at room temperature; 500 Pa at 600°C.
Installation Method: Fixed to flanges at duct level for easy integration.
Dimensions: Suitable for round and rectangular ducts; installation length from 100 mm to 250 mm.
Media Temperature: Long-term operation up to 120°C.
Pressure Resistance: Up to ±15,000 Pa at room temperature.
Movement Capability: Accommodates both axial and lateral movements, with axial compression up to 50 mm and lateral displacement up to 20 mm.
Applications:
Ideal for automatic smoke extraction systems in buildings and tunnels, providing vibration compensation, noise reduction, and safe smoke evacuation under high-temperature conditions.
Expansion Joint Flanges and Flow Liners – Materials, Design, and Accessories
Flanges Design:
Type: Single-part backing flange with clearance holes for easy installation.
Standards: Designed according to the usual norms for ventilation systems.
Materials: Carbon steel or stainless steel.
Coating Options: Primed, hot-dip galvanised, or special paint for enhanced corrosion resistance.
Flow Liners Design:
Type: Cylindrical, conical, or telescoping (detailed designs > page 360).
Materials: Carbon steel or stainless steel.
Coating Options: Primed, hot-dip galvanised, or special paint.
Optional Accessories:
Support Rings: For enhanced stability and alignment.
Cross Section: BGS600 S21.
Vacuum Ring: Made from spring steel to ensure durability under negative pressure.
Overview:
These expansion joint components are designed for ventilation and smoke extraction systems, offering reliable performance, ease of installation, and long-term durability. Flanges and flow liners can be customised according to project requirements, with a variety of materials and coatings to suit different operating environments.
Expansion joints for smoke extraction and ventilation
| Name | Description | Pressure | Temperature / Smoke Test | Movement Capability |
|---|---|---|---|---|
| Smoke extraction fan expansion joint with self-sealing full-faced flanges | Round or rectangular duct cross-section | Up to ±15,000 Pa | 120 min smoke extraction at 600°C | Axial and lateral |
| Smoke extraction single-arch ducting expansion joint with vacuum ring and self-sealing full-faced flanges | Round or rectangular duct cross-section | Up to ±15,000 Pa | 120 min smoke extraction at 600°C | Axial and lateral |
| Fan or ducting expansion joint with self-sealing full-faced flanges for ventilation and air conditioning systems | Round or rectangular duct cross-section | Up to ±15,000 Pa | -60 to +200°C (peaks up to 250°C) | Axial and lateral |
| Conductive fan or ducting expansion joint with explosion protection and self-sealing full-faced flanges | Round or rectangular duct cross-section | Up to ±15,000 Pa | -30 to +100°C | Axial and lateral |
All expansion joint products can be customized according to actual project requirements, including dimensions, materials, temperature range, and accessory configuration, to meet the specific installation and operational needs of different duct systems.
