Circular ducts and fittings
All circular fittings for spiral ducts, from Ø 80 to Ø 1500 mm. Each type lists all available sizes.
Key data
All sizes in mm. The article code is shown next to each version: replace Ø with the size you need.
- Diameters
- Ø 80 to Ø 1500 mm
- Material
- Galvanised steel (Z275), stainless steel 304 and stainless steel 316.
- Connection
- Male fittings with a U-shaped EPDM gasket that slide into the spiral duct.
- Airtightness
- Pressed pieces: airtightness class D, all other pieces: class C, to EN 1507.
Choose a product type
Each type has its own page with all sizes.
Bends
Ø 80 to Ø 1500 mm
Bends from 15° to 90° for circular spiral ducts. Pressed bends up to Ø 200 mm, segmented bends from Ø 80 to Ø 1500 mm.
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Tees
Ø 80 to Ø 1500 mm
Tees create a branch in a circular duct, at 90° or at 30°, 45° or 60°. 90° tees up to Ø 630 mm; angled and handmade tees up to Ø 1500 mm.
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Reducers
Ø 80 to Ø 1250 mm
Reducers connect two ducts of different diameters. Pressed or handmade, concentric or eccentric, from Ø 80 to Ø 1250 mm.
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Offsets
Ø 80 to Ø 1500 mm
An offset shifts the duct axis without changing the diameter, to get around an obstacle. From Ø 80 to Ø 1500 mm, with an offset V from 50 mm.
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Saddle connectors
Ø 80 to Ø 1250 mm
A saddle connector creates a branch on an existing circular duct. Pressed or handmade, at right angles or at 15° to 60°.
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Flat take-offs
Ø 80 to Ø 1250 mm
A flat take-off connects a circular duct to a flat surface, such as a plenum or a rectangular duct. Straight or at an angle of 15° to 60°.
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Y-pieces
Ø 80 to Ø 1500 mm
A Y-piece splits one duct into two branches. With an angle of 45°, 90° or 180° between the branches, from Ø 80 to Ø 1500 mm.
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Crosses
Ø 80 to Ø 1500 mm
A concentric cross creates two opposite branches in one piece. At 90° from Ø 80 to Ø 1500 mm; at 30°, 45° or 60° on request.
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Couplings
Ø 80 to Ø 1250 mm
Couplings join circular ducts and fittings into one run. Ns with a rubber gasket for circular ducts, M without rubber for fittings, from Ø 80 to Ø 1250 mm.
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Volume control dampers
Ø 80 to Ø 900 mm
A volume control damper sets the airflow in a circular duct. Length 100 mm, from Ø 80 to Ø 900 mm.
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Silencers
Ø 80 to Ø 1000 mm
Circular silencers reduce fan and airflow noise in the duct. Connection from Ø 80 to Ø 1000 mm, length 600, 900, 1200 or 1500 mm.
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Cowls
Ø 80 to Ø 1500 mm
Cowls protect a vertical duct outlet on the roof from rain. In five versions, from Ø 80 to Ø 1500 mm.
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End pieces with grille
Ø 80 to Ø 1500 mm
An end piece with grille forms an open intake or exhaust opening and keeps birds and debris out. Straight (Es) or mitred (EVs), from Ø 80 to Ø 1500 mm.
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End caps
Ø 80 to Ø 1250 mm
An end cap closes off the end of a circular run. EPs with a rubber gasket for circular ducts, EPF without rubber for fittings, from Ø 80 to Ø 1250 mm.
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