Round double-flanged version
The circular openings suit round fan and duct connections with matching flange and bolt patterns.
PRODUCT / TECHNICAL DATA Cleanroom Ductwork & AccessoriesSpecifications / Configurations / Procurement
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Cleanroom Ductwork & Accessories
Flexible Duct Connector
Product specifications
| Brand | ST |
|---|---|
| Product type | Flexible duct connector / fabric joint |
| Function | Vibration isolation and reduction of vibration-related noise between fans and ducts |
| Flexible material | Silicone rubber-coated fibre fabric |
| Temperature | 300°C |
| Fire resistance | Fire-resistant fabric connection |
| Pressure resistance | High |
| Fabric density | Customisable |
| Connection options | Round: flanges at both ends; square: integral duct flanges |
| Applications | Fan-to-duct connections, air-conditioning supply air and fire-service ventilation |
| Customisation | Dimensions, connector length, connection arrangement and fabric density |
Customization availableSpecifications can be customized to your requirements.
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Specify the quantity and configuration in your inquiry.
Flexible Duct Connector limits the vibration carried from a fan or air-handling unit into rigid metal ductwork. Its fabric section flexes between the connections, reducing the mechanical path that can cause duct rattling in nearby rooms.
Silicone-coated fibre fabric forms the air passage between the metal ends. Round double-flanged and square integral-flange versions match different equipment connections.
MODELS AND DIMENSIONS
Connection sizes
| Shape | Connection size (mm) | End connection |
|---|---|---|
| Round | Ø250 | Flanges at both ends |
| Round | Ø300 | Flanges at both ends |
| Round | Ø350 | Flanges at both ends |
| Round | Ø400 | Flanges at both ends |
| Round | Ø450 | Flanges at both ends |
| Square | 250 × 250 | Integral duct flanges |
| Square | 300 × 300 | Integral duct flanges |
| Square | 350 × 350 | Integral duct flanges |
| Square | 400 × 400 | Integral duct flanges |
| Square | 450 × 450 | Integral duct flanges |
Other dimensions and connection arrangements can be customised.
MODEL DIFFERENCES
Which configuration fits the task
Square integral-flange version
The square arrangement connects rectangular duct systems; keep the fabric section free to move rather than pulling it tight during installation.
FAN VIBRATION CONTROL
A flexible break in rigid ductwork
Isolate equipment movement
The fabric joint flexes with normal fan movement, reducing the vibration transferred to the connected metal duct.
Reduce transmitted rattling
Limiting mechanical vibration at the equipment connection helps reduce the duct noise it can cause in nearby occupied areas.
Match the duct interface
Metal end flanges provide fixing points for the joint, while the flexible middle section remains free to move.
APPLICATION ENVIRONMENTS
Connect moving equipment to fixed ductwork
Fan and air-handling plant rooms
Fit between the equipment casing and duct to limit vibration entering the fixed ventilation network.
Building air-conditioning systems
Use at supply-fan connections serving offices, shops or other occupied rooms to reduce vibration-related duct noise.
Fire-service ventilation systems
Provide a flexible fan-to-duct connection with the fabric assembly selected for the system's required temperature and fire duty.
CONNECTION DETAILS
Keep the joint flexible in service
Flange and opening dimensions
Match the duct opening, flange profile and bolt pattern so both ends connect correctly.
Space for movement
Choose the length and alignment to allow equipment movement while keeping the fabric clear of the airflow passage, especially at fan inlets.
Operating duty
Select the fabric construction for the air temperature, system pressure and required movement.
PROCUREMENT / INQUIRY
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