SPIRAL SEAM PIPES AND VENTILATION PIPES
Spiral duct for the installation of ventilation systemsSpiral duct ØD = inner diameter [mm]Length 1000 mmMaterial: Galvanised sheet steelDesign in accordance with DIN EN 12237Tightness class D according to DIN EN 1507 (highest class of the standard)Intelmann spiral duct Application areas: The Intelmann spiral duct or spiral seam duct is used for air routing of extract air, outside air, exhaust air and supply air in centralised domestic ventilation or controlled domestic ventilation with heat recovery. The ventilation duct is made of galvanised sheet steel. The diameter refers to the internal diameter of the duct. Connecting the Intelmann spiral ducts in the ventilation system: Nipples or pipe connectors are used to connect the spiral ducts in a ventilation system. Fittings such as bends, branch pieces or T-pieces can be connected directly to the spiral duct. Sockets are used to connect fittings (bends / branch pieces / T-pieces) to each other. A spiral duct is compatible with all other fittings with the same diameter. Two spiral ducts are connected with a nipple.
Nipple for connecting spiral ducts Insertion depth = 40 mm Design in accordance with DIN EN 12237 Tightness class D according to DIN EN 1507 (highest class of the standard) Material galvanised steel
Product Information „Intelmann® Spiral Duct Sleeve (Fitting Connector), Galvanised, DN 80–315“The Intelmann® Spiral Duct Sleeve is used to connect fittings within ventilation and air conditioning systems. It enables the secure connection of components such as bends, T-pieces, branches or reducers and ensures a stable and airtight installation.The sleeve is inserted between two fittings and meets the requirements of Leakage Class D according to DIN EN 1507, the highest leakage class of this standard. The design complies with DIN EN 12237.Manufactured from electro-galvanised steel, the sleeve offers high stability, corrosion resistance and a long service life.Important note:The sleeve is exclusively intended for connecting fittings. It is not suitable for connecting two spiral ducts together.Advantages at a glance✅ Specially developed for connecting fittings✅ Suitable for bends, T-pieces, branches and reducers✅ Leakage Class D according to DIN EN 1507✅ Design according to DIN EN 12237✅ Electro-galvanised steel✅ High dimensional accuracy✅ Easy plug-in assemblyTechnical Details✔ Manufacturer: Intelmann®✔ Product type: Fitting connector / Sleeve✔ Material: Steel, electro-galvanisedStandards✔ Design according to DIN EN 12237✔ Leakage Class D according to DIN EN 1507Dimensions✔ Available nominal sizes: DN 80 to DN 315✔ Insertion depth: 40 mm per sideFeatures✔ Airtight connection of fittings✔ Corrosion-protected surface✔ Robust design✔ High dimensional accuracy✔ Quick and easy assemblyCompatibility✔ Spiral duct bends✔ T-pieces✔ Branch pieces✔ Reducers✔ Other fittings of the corresponding nominal sizeApplication Examples✔ Connecting a spiral duct bend with a T-piece✔ Connecting two ventilation fittings✔ Construction of complex ventilation ductsAreas of Use– Controlled residential ventilation (CRV)– Ventilation systems– Air conditioning systems– Commercial ventilation technology– Industrial plants– Supply and exhaust air systemsThe Intelmann® Spiral Duct Sleeve enables the professional connection of ventilation fittings and ensures a stable, precise and airtight installation. Due to the galvanised design and Leakage Class D, it is suitable for demanding ventilation and air conditioning applications.
Elbow for spiral duct Insertion length l = 40mm Galvanised steel 275 g /m² with EPDM double lip seal Tightness class D according to DIN EN 12237, highest tightness class for air ducts The bend is inserted directly into the spiral duct From a diameter of 224 mm, the bend is manufactured as a segmented bend
Reduction for connecting moulded part with spiral duct Insertion depth = 40 mm Design in accordance with DIN EN 12237 Tightness class D according to DIN EN 1507 (highest class of the standard)
Product Information „Intelmann® Spiral Duct T-Piece 90° with Seal, Galvanised, DN 80–315“The Intelmann® Spiral Duct T-Piece 90° with Seal enables the professional branching of ventilation ducts in supply and exhaust air systems. The 90° outlet is ideal for right-angled branches within ventilation and air conditioning systems.The integrated EPDM lip seal ensures a permanently airtight connection. The T-piece is directly inserted into the spiral duct and meets the requirements of tightness class D according to DIN EN 1507, the highest tightness class of this standard.Manufactured from galvanised steel sheet, the fitting impresses with high stability, corrosion resistance, and a long service life. It is suitable for use in residential ventilation, air conditioning systems, as well as commercial and industrial ventilation systems.Advantages at a Glance✅ 90° outlet for right-angled pipe connections✅ With EPDM lip seal✅ Tightness class D according to DIN EN 1507✅ Manufactured according to DIN EN 12237✅ Directly insertable into spiral ducts✅ Galvanised steel construction✅ Available in DN 80–315Technical Details✔ Manufacturer: Intelmann®✔ Product type: Spiral duct T-piece✔ Outlet angle: 90°✔ Material: Steel, galvanised✔ Seal: EPDM lip sealStandards✔ Manufactured according to DIN EN 12237✔ Tightness class D according to DIN EN 1507Dimensions✔ Insertion depth: 40 mm per connectionFeatures✔ Airtight connection✔ High dimensional accuracy✔ Robust design✔ Corrosion-protected surface✔ Quick assembly thanks to plug-in systemCompatibility✔ Spiral ducts DN 80–315✔ Ventilation ducts DN 80–315Applications– Controlled residential ventilation (CRV)– Ventilation systems– Air conditioning systems– Commercial ventilation technology– Industrial plants– Supply and exhaust air systemsThe Intelmann® Spiral Duct T-Piece 90° with Seal enables professional branching of ventilation ducts while ensuring high airtightness. The galvanised design, integrated EPDM seal, and tightness class D guarantee a durable and reliable installation.
Slide-in backflow flap / internal non-return flap Nominal width 100 mm to 200 mm Opens smoothly, low pressure loss Closes securely, without noise, without rattling The damper is inserted into the ventilation duct For vertical and horizontal installation Housing: Galvanised steel Damper blade: Aluminium Shaft and spring: Stainless steel The non-return damper is used in round ventilation ducts to prevent air backflow. The casing is made of galvanised sheet steel. The damper blades are made of aluminium and the shaft and spring are made of stainless steel. The internal rubber seal reduces noise. The outer foam strip provides a good seal and secures the non-return flap in the pipe. The non-return damper is designed for operation at ambient temperatures up to 60°C, for the transport of clean air, free of coarse dust, grease, chemical vapours and other impurities.
Reduction for connecting spiral ducts to ducts with smaller diameters Insertion depth = 40 mm Design in accordance with DIN EN 12237 Tightness class D according to DIN EN 1507 (highest class of the standard)
Stainless steel spiral duct for the installation of ventilation systemsSpiral duct ØD = inner diameterLength 1000 mmMaterial: Stainless steel V2ADesign according to DIN EN 12237Tightness class D according to DIN EN 1507 (highest class of the standard)Intelmann stainless steel spiral duct Application areas: The Intelmann stainless steel spiral duct or spiral seam duct is used for air routing of extract air, outside air, exhaust air and supply air in centralised domestic ventilation or controlled domestic ventilation with heat recovery. The ventilation duct is made of V2A stainless steel. The diameter refers to the inner diameter of the pipe. Connecting the Intelmann spiral ducts in the ventilation system: Nipples or pipe connectors are used to connect the spiral ducts in a ventilation system. Fittings such as bends, branch pieces or T-pieces can be connected directly to the spiral duct. Sockets are used to connect fittings (bends / branch pieces / T-pieces) to each other. A spiral duct is compatible with all other fittings with the same diameter. Two spiral ducts are connected with a nipple.
Stainless steel nipple for connecting spiral ducts Insertion depth = 40 mm Design in accordance with DIN EN 12237 Tightness class D according to DIN EN 1507 (highest class of the standard) Material: Stainless steel
Stainless steel sleeve for connecting shaped parts (elbow, tee, branch piece, reducer, etc.) Insertion depth = 40 mm Manufactured according to DIN EN 12237 Tightness class D according to DIN EN 1507 (highest class of the standard) Material stainless steel V2A The stainless steel sleeve is used to connect shaped parts. It is NOT suitable for connecting a spiral seam pipe to another pipe. For example, the sleeve can be used to connect a spiral seam pipe elbow and a tee.
Stainless steel segment bend for spiral duct Insertion length l = 40mm Stainless steel V2A with EPDM double lip seal Tightness class D according to DIN EN 12237, highest tightness class for air ducts the bend is inserted directly into the spiral duct
Plastic round duct / pipe: Ø 100 mm.Made from high-quality white plastic, resistant from -20°C to +65°C.Length: 1000 mm
Plastic round duct / pipe: Ø 100 mm.Made from high-quality white plastic, resistant from -20°C to +65°C.Length: 1000 mm
The Intelmann universal reducer for ventilation systems in the sizes: Ø 80 - 100 - 120 - 125 - 150 mmMade from high-quality white plastic, resistant from -20°C to +65°C.
Intelmann plastic air duct bend 90° flat to round for the supply and exhaust air of rooms and extractor hoods. The system is quick, easy and clean to install, without sealants or solvents.Made from white plastic and temperature resistant up to 60 °CSize: 55x110 mm or 55x220 mmType: 90° bend flat duct to round 100-125 mm
Insulated spiral duct made of galvanised sheet steelDouble-walled, insulated spiral ducting provides effective protection against condensation.Designed in accordance with DIN EN 12237 and DIN EN 1506Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelLength: 1 metreInsulation thicknesses: 15 mm| 25 mm | 50 mmMake: Intelmann Possible applications:Outdoor and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated attic), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.
Insulated nipple for spiral ducts made of galvanised sheet steelDouble-walled, insulated spiral ducting provides effective protection against condensation.Designed in accordance with DIN EN 12237 and DIN EN 1506 Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelInsulation thickness: 15 mmMake: Intelmann Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated loft), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.
Insulated Sleeve for Spiral Lock Seam Component Made of Galvanised Steel SheetDouble-walled, insulated spiral lock seam duct effectively protects against condensation. Manufactured according to DIN EN 12237 and DIN EN 1506 Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can, for example, happen with fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised steel sheet Insulation thickness: 15 mm Brand: Intelmann Possible Applications:Outdoor and Exhaust Air DuctTo prevent condensate forming on the outside of the pipes, the duct must be wrapped with insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and Exhaust Air Ducts Through Cold RoomsHere, the ducts must be protected against heat loss and it must be prevented that condensate forms on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If it concerns outdoor temperatures (e.g. uninsulated attic), an insulation thickness of 50 mm should be chosen. In unheated rooms (e.g. unheated cellar), an insulation thickness of 25 mm can be applied.
Insulated spiral duct made of galvanised sheet steelDouble-walled, insulated spiral duct effectively protects against condensation. Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelInsulation thickness: 15 mm Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated loft), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.
The alternative to the rectangular duct in terms of flat design and technology. made from galvanized slit strips (sheet thickness: 0.6 mm); suitable for an overpressure or underpressure of 700 Pa (70 mm WS)Why oval? Space-saving due to low installation heights without flange connections Optimised flow characteristics similar to round air ducts Short installation times thanks to simple plug connections and sockets Design for demanding visible installations with optional powder coating High stability allows embedding in concrete Manufacture according to VDI 6022 possible Hardly any dirt deposits due to rounded shape Fittings with lip seals up to tightness class D
With lip seal!The alternative to rectangular ducts in terms of flat design and technology. Made from galvanized slit strips (sheet thickness: 0.6 mm); suitable for an overpressure or underpressure of 700 Pa (70 mm WS)Why oval?Space-saving due to low installation heights without flange connections Optimised flow characteristics similar to round air ducts Short assembly times thanks to simple plug connections and sockets Design for demanding visible installations with optional powder coating High stability allows embedding in concrete Manufacture according to VDI 6022 possible Hardly any dirt deposits due to rounded shape Fittings with lip seals up to tightness class D
With lip seal!The alternative to rectangular ducts in terms of flat design and technology. Made from galvanized slit strips (sheet thickness: 0.6 mm); suitable for an overpressure or underpressure of 700 Pa (70 mm WS)Why oval? Space-saving due to low installation heights without flange connections Optimised flow characteristics similar to round air ducts Short assembly times thanks to simple plug connections and sockets Design for demanding visible installations with optional powder coating High stability allows embedding in concrete Manufacture according to VDI 6022 possible Hardly any dirt deposits due to rounded shape Fittings with lip seals up to tightness class D
With lip seal!The alternative to rectangular ducts in terms of flat design and technology. Made from galvanized slit strips (sheet thickness: 0.6 mm); suitable for an overpressure or underpressure of 700 Pa (70 mm WS)Why oval?Space-saving due to low installation heights without flange connections Optimised flow characteristics similar to round air ducts Short assembly times thanks to simple plug connections and sockets Design for demanding visible installations with optional powder coating High stability allows embedding in concrete Manufacture according to VDI 6022 possible Hardly any dirt deposits due to rounded shape Fittings with lip seals up to tightness class D