SHUT-OFF DAMPERS FOR VENTILATION DUCTS
The Intelmann shut-off dampers are suitable for a wide range of applications in ventilation technology. The ventilation dampers are used, for example, in controlled residential ventilation or for a complete shut-off of the airflow. The shut-off damper and actuator with spring return is ideal for blocking cold draughts that enter the living space from outside through your extractor hood / vapour extractor. No additional control unit is required for this. The damper closes automatically as soon as the power supply is interrupted.
Intelmann® Shut-off Damper with Hand Lever Ø 80–355 mm for Ventilation Ducts – Tight Closing, with Motor BracketThe Intelmann® Shut-off Damper with Hand Lever is the reliable solution for manual or motorised regulation of airflows in ventilation and air conditioning systems. It is ideally suited for use in round air ducts and allows precise control of supply and exhaust air in residential, commercial, and industrial applications.The shut-off damper is designed to be tight closing and features a high-quality EPDM lip seal on the damper blade, ensuring high tightness and minimal leakage. This contributes to the energy efficiency of the entire ventilation system and prevents unwanted air losses.Equipped with a hand lever, the air volume can be easily and directly adjusted. Additionally, the damper is fitted with a motor bracket and prepared for use with actuators, especially for Belimo LM and CM actuators. This allows for both manual and automated control without any issues.Advantages at a glance:✅ Tight closing – Minimal leakage thanks to EPDM lip seal✅ Flexible use – Suitable for manual and motorised control✅ Integrated motor bracket – Prepared for actuators (e.g. Belimo LM / CM)✅ Easy operation – Precise adjustment via sturdy hand lever✅ Robust construction – For long-lasting use in ventilation systems✅ Energy efficient – Reduces air losses in the systemTechnical details:✔ Product name: Intelmann® Shut-off Damper with Hand Lever✔ Diameter: Ø 80 – 355 mm✔ Design: Tight closing✔ Seal: EPDM lip seal on damper blade✔ Operation: Hand lever✔ Motor bracket: Suitable for Belimo LM and CM actuators✔ Application area: Ventilation construction, air conditioning, industry & commerceVersions:✔ Standard (AKDL): Shaft length 50 mm from motor bracket✔ Long shaft (AKDLL): Shaft length 120 mm from motor bracket – ideal for actuators with spring return, e.g. suitable for Belimo TF actuatorsApplication & notes:The shut-off damper is used in round ventilation ducts and serves to regulate or shut off the airflow. Thanks to the integrated motor bracket, it can be easily retrofitted with an actuator if required or operated directly in an automated manner.With the Intelmann® Shut-off Damper with Hand Lever, you receive a high-quality, flexible, and tight solution for air volume control in modern ventilation systems.
Product Information „Intelmann® Shut-off Damper with Belimo LM230A Actuator, DN 80–200“The Intelmann® shut-off damper with Belimo LM230A actuator is used for the automatic control and shut-off of airflows in ventilation and air conditioning systems. It is suitable for supply and exhaust air systems and is inserted directly between two ventilation ducts.The shut-off damper is optionally made of galvanised steel or stainless steel V2A. The integrated EPDM sealing lips ensure an airtight connection according to DIN EN 12237 Class D, the highest tightness class of this standard. The damper blade is also equipped with an EPDM seal and achieves tightness class 4 according to DIN EN 1751, the highest class of this standard.For automatic operation, the damper is equipped with a Belimo LM230A actuator. The actuator operates with 230 V AC, has a torque of 5 Nm and is suitable for dampers with an area of up to 1 m². The motor bracket can be rotated by 360° around the damper shaft, allowing flexible mounting of the actuator.Advantages at a glance✅ Includes Belimo LM230A actuator✅ For open/close operation with 230 V AC✅ Damper blade tight-closing according to DIN EN 1751 Class 4✅ Airtight duct connections according to DIN EN 12237 Class D✅ Optionally made of galvanised steel or stainless steel V2A✅ Rotatable motor bracket for flexible mounting✅ Maintenance-free operationTechnical Details Shut-off Damper✔ Manufacturer: Intelmann®✔ Product type: Motorised shut-off damper✔ Nominal sizes: DN 80 to DN 200✔ Material: Galvanised steel or stainless steel V2A✔ Duct connection seal: EPDM sealing lips✔ Damper blade seal: EPDM sealing lip✔ Damper blade: Double bearing✔ Motor bracket: 360° rotatableStandards✔ Airtightness according to DIN EN 12237 Class D✔ Damper tightness according to DIN EN 1751 Class 4Installation✔ Installation between two ventilation ducts✔ Direct integration into supply and exhaust air lines✔ Flexible positioning of the actuator thanks to rotatable motor bracketBelimo LM230A ActuatorElectrical Data✔ Rated voltage: AC 230 V✔ Frequency: 50/60 Hz✔ Operating range: AC 85–264 V✔ Power consumption in operation: 1.5 W✔ Power consumption at rest: 0.5 W✔ Power consumption for sizing: 3.5 VA✔ Connection cable: 1 m, 3 × 0.75 mm²✔ Parallel operation possibleFunctional Data✔ Torque: at least 5 Nm✔ Suitable for dampers up to 1 m² area✔ Rotation angle: max. 95°✔ Running time: 150 s / 90°✔ Direction of rotation switchable✔ Mechanical position indicator✔ Manual adjustment with lockable gear disengagement✔ Sound power level: 35 dB(A)Safety and Environmental Conditions✔ Protection class: IP54✔ Protection class II (double insulated)✔ Ambient temperature: -30 °C to +50 °C✔ Storage temperature: -40 °C to +80 °C✔ Humidity: up to 95 % RH, non-condensing✔ Maintenance-freeWeight✔ Actuator weight: approx. 0.50 kgAreas of Application– Controlled residential ventilation (CRV)– Ventilation systems– Air conditioning systems– Commercial ventilation technology– Industrial plants– Supply and exhaust air systems– Automated airflow controlThe Intelmann® shut-off damper with Belimo LM230A combines an airtight damper design with a proven electric actuator. Thanks to high tightness values, robust materials and flexible mounting options, it is ideally suited for professional ventilation and air conditioning applications.
Product Information „Intelmann® Shut-off Damper with Belimo TF230 Actuator and Spring Return, DN 80–200“The Intelmann® shut-off damper with Belimo TF230 spring return actuator is used for automatic control and secure shut-off of airflows in ventilation and air conditioning systems. Thanks to the integrated spring return function, the damper automatically returns to the defined safety position in the event of a power failure.The shut-off damper is made of galvanized steel and features EPDM sealing lips for airtight installation according to DIN EN 12237 Class D, the highest airtightness class of this standard. The damper blade is also equipped with an EPDM seal and achieves airtightness class 4 according to DIN EN 1751, the highest class of this standard.The motor bracket can be rotated by 360° around the damper shaft, allowing flexible installation of the actuator in almost any mounting situation.Advantages at a glance✅ Includes Belimo TF230 actuator with spring return✅ Automatic safety position in case of power failure✅ Airtight installation according to DIN EN 12237 Class D✅ Tight-closing damper blade according to DIN EN 1751 Class 4✅ Galvanized steel construction✅ Rotatable motor bracket for flexible installation✅ Maintenance-free operationTechnical Details Shut-off Damper✔ Manufacturer: Intelmann®✔ Product type: Motorised shut-off damper with spring return✔ Nominal sizes: DN 80 to DN 200✔ Material: Steel, galvanized✔ Seal at pipe connection: EPDM sealing lips✔ Seal at damper blade: EPDM sealing lip✔ Damper blade: Double bearing✔ Motor bracket: 360° rotatableStandards✔ Airtightness according to DIN EN 12237 Class D✔ Damper tightness according to DIN EN 1751 Class 4Installation✔ Installation between two ventilation pipes✔ Direct integration into supply and exhaust air ducts✔ Flexible actuator installation thanks to rotatable motor bracketBelimo TF230 Actuator with Spring ReturnElectrical Data✔ Rated voltage: AC 230 V✔ Frequency: 50/60 Hz✔ Operating range: AC 85–264 V✔ Power consumption during operation: 2.5 W✔ Power consumption at rest: 1.5 W✔ Power consumption for sizing: 5 VA✔ Connection cable: 1 m, 2 × 0.75 mm²✔ Parallel operation possibleFunctional Data✔ Motor torque: at least 2.5 Nm✔ Spring return torque: at least 2.5 Nm✔ Suitable for dampers up to 1 m² area✔ Rotation angle: max. 95°✔ Motor running time: 75 s / 90°✔ Emergency position running time: < 25 s / 90°✔ Running direction selectable by installation✔ Mechanical position indicator✔ Service life: at least 60,000 emergency positionsSafety and Environmental Conditions✔ Protection class II (double insulated)✔ Protection rating: IP42✔ Ambient temperature: -30 °C to +50 °C✔ Storage temperature: -40 °C to +80 °C✔ Humidity: up to 95 % RH, non-condensing✔ Maintenance-freeWeight✔ Actuator weight: approx. 0.69 kgAreas of Application– Controlled residential ventilation (CRV)– Ventilation systems– Air conditioning systems– Commercial ventilation technology– Industrial plants– Supply and exhaust air systems– Safety and fire protection applications– Automated airflow controlThe Intelmann® shut-off damper with Belimo TF230 spring return actuator combines the highest airtightness with an automatic safety function. Thanks to the spring return technology, a defined damper position is ensured even in the event of a power failure, making it ideal for demanding ventilation and air conditioning applications.
Insulated spiral seam duct shut-off damper made of galvanized steel sheetDouble-walled, insulated spiral seam duct effectively protects against condensation water. Manufactured according to DIN EN 12237 and DIN EN 1506 Condensation water is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can, for example, be the case with fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanized steel sheetInsulation thickness: 15 mm Brand: Intelmann Possible applications:Outdoor and exhaust air ductTo avoid condensate on the outside of the pipes, the duct must be wrapped with insulation. An insulation thickness of approx. 15 mm can be sufficient here.Supply and exhaust air duct 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.
Product Information „Intelmann® Bypass Damper with Belimo LM230A Actuator, DN 100–300“The Intelmann® Bypass Damper with Belimo LM230A Actuator is used for the automatic control of airflows in ventilation and air conditioning systems. It is particularly suitable for bypass applications, heat recovery systems, and the targeted diversion of airflows within ventilation networks.The damper is made of galvanized steel and is equipped with EPDM sealing lips. This ensures an airtight installation according to DIN EN 12237 Class D, the highest airtightness class of this standard. The damper blade also features an EPDM seal and meets the requirements of DIN EN 1751 Class 4, the highest class for tight-closing dampers.For automatic operation, the bypass damper is equipped with a Belimo LM230A actuator. The motor bracket can be rotated 360° around the damper shaft, allowing flexible installation in almost any mounting situation.Advantages at a glance✅ Includes Belimo LM230A actuator✅ Ideal for bypass and switching applications✅ Airtight installation according to DIN EN 12237 Class D✅ Tight-closing damper blade according to DIN EN 1751 Class 4✅ Galvanized steel construction✅ Rotatable motor bracket for flexible installation✅ Maintenance-free operationTechnical Details Bypass Damper✔ Manufacturer: Intelmann®✔ Product type: Motorised bypass damper✔ Nominal sizes: DN 100 to DN 300✔ Material: Galvanized steel✔ Pipe connection seal: EPDM sealing lips✔ Damper blade seal: EPDM sealing lip✔ Damper blade: Double bearing✔ Motor bracket: 360° rotatableStandards✔ Airtightness according to DIN EN 12237 Class D✔ Damper tightness according to DIN EN 1751 Class 4Belimo LM230A ActuatorElectrical Data✔ Rated voltage: AC 230 V✔ Frequency: 50/60 Hz✔ Operating range: AC 85–264 V✔ Power consumption in operation: 1.5 W✔ Power consumption at rest: 0.5 W✔ Power consumption for sizing: 3.5 VA✔ Connection cable: 1 m, 3 × 0.75 mm²✔ Parallel operation possibleFunctional Data✔ Torque: at least 5 Nm✔ Suitable for dampers up to 1 m² area✔ Rotation angle: max. 95°✔ Running time: 150 s / 90°✔ Direction of rotation switchable✔ Mechanical position indicator✔ Manual adjustment with lockable gear disengagement✔ Sound power level: 35 dB(A)Safety and Environmental Conditions✔ Protection class II (double insulated)✔ Protection rating: IP54✔ Ambient temperature: -30 °C to +50 °C✔ Storage temperature: -40 °C to +80 °C✔ Humidity: up to 95 % RH, non-condensing✔ Maintenance-freeAreas of Application– Controlled residential ventilation (CRV)– Ventilation systems– Air conditioning systems– Heat recovery systems– Summer bypass systems– Commercial ventilation technology– Industrial plants– Supply and exhaust air systemsThe Intelmann® Bypass Damper with Belimo LM230A enables reliable control and diversion of airflows in modern ventilation systems. The high-quality damper design, excellent airtightness, and proven Belimo actuator ensure a durable and low-maintenance operation.
Shut-off damper steel, galvanised with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo CM24-L damper actuator for open/close control of dampers, AC/DC 24 V, 2 NM torque for dampers up to 0.4 m² damper area The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo CM24-L Electrical data Rated voltage AC/DC 24 V Nominal voltage Frequency 50/60 Hz Functional range AC 19.2...28.8 V / DC 19.2...28.8 V Power consumption in operation _##########_12__ W Power consumption idle position 0.2 W Power consumption Dimensioning 1 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 2 Nm Direction of rotation Motor anti-clockwise Manual adjustment with magnet Angle of rotation 0...287.5°, Angle of rotation Note without limit: endless with one end stop clip Z-ESCM: 315° Running time motor 75 s / 90° Motor sound power level 35 dB(A) Axle drive Universal clamping block 6...12.7 mm Mechanical position indicator, clip-on (with integrated magnet for gear disengagement) (with integrated magnet for gear disengagement) Safety Protection class IEC/EN III safety extra-low voltage (SELV) Protection class UL UL Class 2 Supply Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2014/30/EU Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 UL cULus certification in accordance with UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control ##########_48__ kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.28 kg
Slide-in backflow flap / internal non-return flap Nominal width 100 mm to 200 mm Opens smoothly, low pressure loss Closes securely, no noise, no 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, 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.
Product Information „Intelmann® Inspection Piece with Cover / Inspection Flap for Spiral Duct, DN 100–315“The Intelmann® Inspection Piece with Cover provides quick and convenient access to ventilation ducts for inspection, maintenance, and cleaning tasks. The integrated inspection opening facilitates regular checks of ventilation systems and ensures that maintenance work can be carried out without the need for complex dismantling of the ductwork.The component combines an inspection piece with a lockable inspection flap and is directly integrated into the ventilation duct. The all-round seal ensures reliable sealing and supports airtight operation of the system.Due to its precise manufacturing, the Intelmann® Inspection Piece is suitable for spiral ducts with nominal sizes from DN 100 to DN 315 and can be used in both residential ventilation as well as commercial and industrial ventilation systems.Advantages at a Glance✅ Quick access for maintenance and cleaning work✅ Integrated inspection opening with lockable cover✅ Facilitates inspection and upkeep of ventilation systems✅ Robust metal construction✅ Airtight design with seal✅ Easy integration into existing ventilation ducts✅ Suitable for spiral ducts DN 100–315Technical Details✔ Manufacturer: Intelmann®✔ Product type: Inspection piece with cover / inspection flap✔ Design: With inspection opening and seal✔ Material: Steel, galvanisedDimensions✔ Available nominal sizes: DN 100 to DN 315Features✔ Maintenance-friendly design✔ Quick access to the duct system✔ Robust construction✔ Airtight sealing through seal✔ Easy installation in ventilation ductsCompatibility✔ Intelmann® spiral ducts DN 100–315✔ Round ventilation ducts of corresponding nominal size✔ Ventilation and air conditioning systemsApplications✔ Inspection opening for ventilation ducts✔ Cleaning opening for air channels✔ Maintenance access for ventilation systems✔ Control opening for air distribution systemsAreas of Use– Controlled residential ventilation (CRV)– Ventilation systems– Air conditioning systems– Commercial ventilation technology– Industrial plants– Supply and exhaust air systemsWith the Intelmann® Inspection Piece with Cover, you create a permanently accessible maintenance point in your ventilation system. This allows inspections, cleanings, and service work to be carried out quickly and easily without having to dismantle ductwork.
Constant volume flow controller – pressure-independent air volume control for ventilation systemsA constant volume flow controller is used for the automatic and pressure-independent regulation of the air volume flow in ventilation and air conditioning systems. It ensures that the set air flow rate is maintained consistently even with fluctuating pressure conditions in the duct system. This guarantees an even distribution of air throughout the entire ventilation system.The purely mechanical control technology operates autonomously and requires no external power supply. Pressure changes in the air duct are automatically compensated by the integrated control flap continuously adjusting its position. This ensures the desired volume flow remains reliably within the specified control range.Constant volume flow controllers are used in supply and exhaust air systems of residential buildings, office buildings, commercial properties, as well as industrial ventilation systems. They are ideal for stabilising air volumes in individual branches, rooms, or ventilation zones.Thanks to the round design for standard ventilation pipes and spiral duct pipes (Spiro pipes), the controllers can be easily and space-efficiently integrated into existing duct networks.Advantages of the constant volume flow controller✅ Constant air volume flow regardless of pressure fluctuations✅ No external power supply required✅ Purely mechanical, self-regulating operation✅ Easy integration into round ventilation ducts✅ Even air distribution throughout the entire system✅ Low maintenance and durable✅ Suitable for supply and exhaust air systems✅ Quick installation in standard ventilation pipesTypical areas of applicationControlled residential ventilation (CRV)Office and administrative buildingsCommercial and retail spacesIndustrial and production hallsPublic buildingsSchools and kindergartensVentilation systems with fluctuating pressure conditionsVariants and air flow rangesVariant Nominal diameter Air flow rangeVSR100 DN100105 – 255 m³/hVSR125 DN125130 – 310 m³/hVSR160 DN160260 – 580 m³/hVSR200 DN200380 – 960 m³/hVSR250 DN250650 – 1430 m³/hHow it worksThe volume flow controller operates with a mechanical control mechanism that regulates the air flow via a movable control flap. When the pressure in the air duct rises, the flap automatically closes further. When the pressure drops, it opens accordingly. This keeps the set volume flow constant within the defined control range.Technical characteristics✔ Design: Round for standard ventilation pipes and spiral duct pipes✔ Control principle: Pressure-independent, mechanically self-regulating✔ Installation: Directly in the air duct✔ Application area: Supply and exhaust air systems✔ Power supply: Not required✔ Maintenance: Low maintenance✔ Use: Ventilation, air conditioning and HVAC systemsA constant volume flow controller is an efficient solution for precise air volume control in modern ventilation systems. It ensures even air supply, improves the system’s control stability, and contributes to economical system operation.
Product Information „Fire Protection Shut-off Damper for Ventilation Ducts“The fire protection shut-off damper is a safety-relevant component for ventilation and air conditioning systems (HVAC systems). In the event of a fire, it reliably prevents the spread of fire and smoke gases through air ducts between different fire compartments of a building, thereby making a significant contribution to preventive structural fire protection.The fire protection damper is integrated directly into ventilation ducts and air duct systems. Under normal operation, the damper blade remains open, allowing unrestricted airflow. In the event of a fire, the closing mechanism is automatically activated: the locking lever releases the closing spring, causing the damper blade to close independently and reliably seal the air duct.For safe triggering, the fire protection shut-off damper is equipped with an integrated thermal fuse with a triggering temperature of 72 °C. When this temperature is reached, the damper closes automatically and prevents the transmission of fire and smoke through the ventilation system.The fire protection damper meets the relevant European requirements for fire protection products in ventilation systems and is accordingly tested and certified.Advantages at a Glance✅ Automatic closing in the event of fire✅ Thermal fuse mechanism with 72 °C triggering temperature✅ Fire resistance class EI 90 according to EN 1366✅ Prevents the spread of fire and smoke through ventilation ducts✅ Suitable for ventilation and air conditioning systems✅ Tested according to European fire protection standards✅ High operational safety✅ Low-maintenance designFunctionalityDuring normal ventilation operation, the damper blade remains open, allowing free airflow.If the ambient temperature rises to 72 °C in the event of a fire, the integrated thermal fuse triggers. The locking lever releases the closing spring, causing the damper blade to close automatically and seal the air duct.This effectively prevents the spread of fire and smoke gases through the ventilation system.Technical Specifications✔ Fire resistance class: EI 90 according to EN 1366✔ CE certification according to EN 15650✔ Fire protection test according to EN 1366-2✔ Classification according to EN 13501-3 + A1✔ Tightness according to EN 1751: Damper blade class 2✔ Thermal fuse with triggering temperature 72 °CStandards and Certifications✔ EN 15650✔ EN 1366-2✔ EN 13501-3 + A1✔ EN 1751✔ Fire resistance class EI 90✔ CE certifiedFeatures✔ Automatic closing mechanism✔ Self-activation by temperature rise✔ Reliable sealing of air ducts✔ Suitable for modern HVAC systems✔ High functional reliabilityApplication Areas✔ Ventilation systems✔ Air conditioning systems✔ HVAC systems✔ Residential buildings✔ Office and administrative buildings✔ Commercial and industrial buildings✔ Public facilitiesDeployment Areas– Schools– Hospitals– Hotels– Production facilities– Storage and logistics buildings– Technical building equipmentThe fire protection shut-off damper for ventilation ducts represents a reliable safety component for modern ventilation and air conditioning systems. With its fire resistance class EI 90 according to EN 1366, automatic closing mechanism, and standard-compliant certification, it ensures that fire and smoke cannot spread through the building’s air duct system in the event of a fire.
Product Information „Intelmann® V2A Shut-off Damper Heat Resistant up to 180 °C with Silicone Seal, Long Shaft and Motor Bracket, DN 80–250“The Intelmann® V2A stainless steel shut-off damper is suitable for regulating and shutting off airflows in ventilation, air conditioning, and process air systems. Thanks to the heat-resistant design with a silicone seal, it is suitable for operating temperatures of up to 180 °C.The damper features a long damper shaft, a robust brass bushing bearing, and a pre-assembled motor bracket for mounting a suitable actuator. This makes it suitable for both manual and motorised applications.Note: An actuator is not included in the delivery. The product image may show an optionally mounted Belimo actuator.Advantages at a Glance✅ Heat resistant up to 180 °C✅ Made from high-quality V2A stainless steel✅ Silicone seal for increased temperature resistance✅ Long damper shaft for flexible actuator mounting✅ Robust bearing with brass bushings✅ Pre-assembled motor bracket✅ Prepared for motorised retrofittingTechnical Details✔ Manufacturer: Intelmann®✔ Product type: Shut-off damper✔ Nominal sizes: DN 80 to DN 250✔ Damper housing material: V2A stainless steel✔ Seal: Silicone✔ Bearing: Brass bushings✔ Shaft: Long version✔ Motor bracket: Pre-assembledTemperature Resistance✔ Permanently heat resistant up to 180 °C✔ Suitable for elevated air temperatures✔ Temperature-resistant silicone sealFeatures✔ Corrosion-resistant stainless steel design✔ High mechanical stability✔ Smooth damper movement✔ Suitable for motorised or manual operation✔ Low-maintenance constructionInstallation✔ Installation in ventilation ducts✔ Connection to spiral duct pipes and ventilation components of corresponding nominal size✔ Flexible actuator mounting thanks to long shaft and motor bracketImportant Note✔ Delivery without actuator✔ Product images may show an optional Belimo actuator✔ Actuator must be ordered separately if requiredApplications– Ventilation systems– Air conditioning systems– Process air systems– Industrial plants– Commercial ventilation technology– Warm air systems– Applications with elevated air temperaturesThe Intelmann® V2A shut-off damper with silicone seal has been specially developed for applications with elevated temperatures. The combination of V2A stainless steel, temperature-resistant seal, brass bushing bearing, and motor bracket makes it the ideal solution for demanding ventilation and process air systems.
Intelmann® Shut-off Damper with Hand Lever Ø 80–355 mm for Ventilation Ducts – Tight Closing, with Motor BracketThe Intelmann® Shut-off Damper with Hand Lever is the reliable solution for manual or motorised regulation of airflows in ventilation and air conditioning systems. It is ideally suited for use in round air ducts and allows precise control of supply and exhaust air in residential, commercial, and industrial applications.The shut-off damper is designed to be tight closing and features a high-quality EPDM lip seal on the damper blade, ensuring high tightness and minimal leakage. This contributes to the energy efficiency of the entire ventilation system and prevents unwanted air losses.Equipped with a hand lever, the air volume can be easily and directly adjusted. Additionally, the damper is fitted with a motor bracket and prepared for use with actuators, especially for Belimo LM and CM actuators. This allows for both manual and automated control without any issues.Advantages at a glance:✅ Tight closing – Minimal leakage thanks to EPDM lip seal✅ Flexible use – Suitable for manual and motorised control✅ Integrated motor bracket – Prepared for actuators (e.g. Belimo LM / CM)✅ Easy operation – Precise adjustment via sturdy hand lever✅ Robust construction – For long-lasting use in ventilation systems✅ Energy efficient – Reduces air losses in the systemTechnical details:✔ Product name: Intelmann® Shut-off Damper with Hand Lever✔ Diameter: Ø 80 – 355 mm✔ Design: Tight closing✔ Seal: EPDM lip seal on damper blade✔ Operation: Hand lever✔ Motor bracket: Suitable for Belimo LM and CM actuators✔ Application area: Ventilation construction, air conditioning, industry & commerceVersions:✔ Standard (AKDL): Shaft length 50 mm from motor bracket✔ Long shaft (AKDLL): Shaft length 120 mm from motor bracket – ideal for actuators with spring return, e.g. suitable for Belimo TF actuatorsApplication & notes:The shut-off damper is used in round ventilation ducts and serves to regulate or shut off the airflow. Thanks to the integrated motor bracket, it can be easily retrofitted with an actuator if required or operated directly in an automated manner.With the Intelmann® Shut-off Damper with Hand Lever, you receive a high-quality, flexible, and tight solution for air volume control in modern ventilation systems.
Shut-off damper: galvanised steel or stainless steel V2A with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing according to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo CM230-L damper actuator for open/close control of dampers, AC 230 V, 2 NM torque for dampers up to 0.4 m² damper area The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo CM230-L Electrical data Rated voltage AC 230 V Rated voltage Frequency 50/60 Hz Operating range AC 85...264 V Power consumption in operation 1.5 W Power consumption idle position 0.5 W Power consumption dimensioning 3.5 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 5 Nm Direction of rotation Motor selectable with switch 0 (anti-clockwise) / 1 (clockwise rotation) Manual adjustment Gear disengagement with push button, lockable Angle of rotation max. 95° Angle of rotation Note can be limited on both sides by adjustable mechanical stops Motor running time 150 s / 90° Motor sound power level 35 dB(A) Axle mounting Universal clamping block 6...20 mm Mechanical position indicator, clip-on Safety Protection class IEC/EN II insulated Protection class UL II insulated Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2004/108/EC Low Voltage Directive CE according to 2006/95/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 Certification UL cULus according to UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control 43 kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.50 kg
Shut-off damper: galvanised steel or stainless steel V2A with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing according to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft Belimo LMC24A, running time 35 sec., 5 Nm, constant, 95° AC 230 V, open-close, 3-point The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo LMC230A Electrical data Rated voltage AC 230 V Nominal voltage Frequency 50/60 Hz Operating range AC 85...264 V Power consumption operation 2 W Power consumption idle position 0.5 W Power consumption Dimensioning 4 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 5 Nm Direction of rotation Motor selectable with switch 0 (anti-clockwise) / 1 (clockwise rotation) Manual adjustment Gear disengagement with push button, lockable Angle of rotation max. 95° Angle of rotation Note can be limited on both sides by adjustable mechanical stops Motor running time 35 s / 90° Motor sound power level 45 dB(A) Axle mounting Universal clamping block 6...20 mm Mechanical position indicator, clip-on Safety Protection class IEC/EN II insulated Protection class UL II insulated Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2004/108/EC Low Voltage Directive CE according to 2006/95/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 Certification UL cULus according to UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control ##########_41__ kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.50 kg
Shut-off damper: galvanised steel or stainless steel V2A with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing according to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo LM230A damper actuator for open/close control of dampers, for 230 V, 5 NM torque, for dampers up to 1m² damper area The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo LM230A Electrical data Rated voltage AC 230 V Rated voltage Frequency 50/60 Hz Operating range AC 85...264 V Power consumption in operation 1.5 W Power consumption idle position 0.5 W Power consumption dimensioning 3.5 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 5 Nm Direction of rotation Motor selectable with switch 0 (anti-clockwise) / 1 (clockwise rotation) Manual adjustment Gear disengagement with push button, lockable Angle of rotation max. 95° Angle of rotation Note can be limited on both sides by adjustable mechanical stops Motor running time 150 s / 90° Motor sound power level 35 dB(A) Axle mounting Universal clamping block 6...20 mm Mechanical position indicator, clip-on Safety Protection class IEC/EN II insulated Protection class UL II insulated Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2004/108/EC Low Voltage Directive CE according to 2006/95/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 Certification UL cULus according to UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control 43 kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.50 kg
Bypass damper steel, galvanised with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip, tight-closing to DIN EN 1751 Class 4, best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo LM230A damper actuator for open/close control of dampers, for 230 V, 5 NM torque, for dampers up to 1m² damper area Technical data sheet Belimo LM230A Electrical data Rated voltage AC 230 V Rated voltage Frequency 50/60 Hz Operating range AC 85...264 V Power consumption in operation 1.5 W Power consumption idle position 0.5 W Power consumption dimensioning 3.5 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 5 Nm Direction of rotation Motor selectable with switch 0 (anti-clockwise) / 1 (clockwise rotation) Manual adjustment Gear disengagement with push button, lockable Angle of rotation max. 95° Angle of rotation Note can be limited on both sides by adjustable mechanical stops Motor running time 150 s / 90° Motor sound power level 35 dB(A) Axle mounting Universal clamping block 6...20 mm Mechanical position indicator, clip-on Safety Protection class IEC/EN II insulated Protection class UL II insulated Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2004/108/EC Low Voltage Directive CE according to 2006/95/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 Certification UL cULus according to UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control 43 kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free
Shut-off damper steel, galvanised with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo TF230 damper actuator with spring return Running time motor 75 s / 90°; running time emergency control function <25 s / 90° for open/close control of dampers, for 230 V, 2.5 NM torque, for dampers up to 1m² damper area The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo TF230 Electrical data Rated voltage AC 230 V Rated voltage Frequency 50/60 Hz Operating range AC 85...264 V Power consumption in operation 2.5 W Power consumption idle position 1.5 W Power consumption Dimensioning 5 VA Power supply / control connection Cable 1 m, 2 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 2.5 Nm Spring return torque min. 2.5 Nm Motor direction selectable by mounting L / R Direction of travel Emergency positioning function selectable by mounting L / R Manual adjustment no Angle of rotation max. 95° Angle of rotation Note adjustable from 37% in 2.5% increments (with mechanical stop) mechanical stop) Running time motor 75 s / 90° Running time emergency adjustment function <25 s / 90° Motor sound power level 50 dB(A) Axle drive Universal clamping block 6...12.7 mm Mechanical position indicator Service life min. 60,000 emergency positions Safety class Protection class IEC/EN II insulated Protection class IEC/EN IP42 EMC CE in accordance with 2004/108/EC Low Voltage Directive CE according to 2006/95/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 Mode of operation Type 1.AA Overvoltage category III Rated impulse voltage Supply / control Control 4 kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.69 kg
Shut-off damper steel, galvanised with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo CM24-L damper actuator for open/close control of dampers, AC/DC 24 V, 2 NM torque for dampers up to 0.4 m² damper area The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo CM24-L Electrical data Rated voltage AC/DC 24 V Nominal voltage Frequency 50/60 Hz Functional range AC 19.2...28.8 V / DC 19.2...28.8 V Power consumption in operation _##########_12__ W Power consumption idle position 0.2 W Power consumption Dimensioning 1 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 2 Nm Direction of rotation Motor anti-clockwise Manual adjustment with magnet Angle of rotation 0...287.5°, Angle of rotation Note without limit: endless with one end stop clip Z-ESCM: 315° Running time motor 75 s / 90° Motor sound power level 35 dB(A) Axle drive Universal clamping block 6...12.7 mm Mechanical position indicator, clip-on (with integrated magnet for gear disengagement) (with integrated magnet for gear disengagement) Safety Protection class IEC/EN III safety extra-low voltage (SELV) Protection class UL UL Class 2 Supply Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2014/30/EU Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 UL cULus certification in accordance with UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control ##########_48__ kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.28 kg
Shut-off damper steel, galvanised with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft Belimo LMC24A, running time 35 sec., 5 Nm, constant, 95° AC/DC 24 V, open-close, 3-point The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo LMC24A Electrical data Rated voltage AC/DC 24 V Nominal voltage Frequency 50/60 Hz Functional range AC 19.2...28.8 V / DC 19.2...28.8 V Power consumption in operation 1.5 W Power consumption idle position _##########_13__ W Power consumption dimensioning 2.5 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 5 Nm Direction of rotation Motor selectable with switch 0 (anti-clockwise) / 1 (clockwise rotation) Manual adjustment Gear disengagement with push button, lockable Angle of rotation max. 95° Angle of rotation Note can be limited on both sides by adjustable mechanical stops Motor running time 35 s / 90° Motor sound power level 45 dB(A) Axle mounting Universal clamping block 6...20 mm Mechanical position indicator, clip-on Safety Protection class IEC/EN III Safety extra-low voltage Protection class UL UL Class 2 Supply Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2004/108/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 UL cULus certification in accordance with UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control 0.8 kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.49 kg
Shut-off damper steel, galvanised with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo TF24 damper actuator with spring return Running time motor 75 s / 90°; running time emergency control function <25 s / 90° for open/close control of dampers, AC/DC 24 V, 2.5 NM torque, for dampers up to 1m² damper area The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo TF24 Electrical data Rated voltage AC/DC 24 V Nominal voltage Frequency 50/60 Hz Functional range AC 19.2...28.8 V / DC 21.6...28.8 V Power consumption in operation 2.5 W Power consumption idle position 1.5 W Power consumption Dimensioning 5 VA Power supply / control connection Cable 1 m, 2 x 0.75 mm² Parallel operation Yes (observe power data) Functional data Motor torque min. 2.5 Nm Spring return torque min. 2.5 Nm Motor direction selectable by mounting L / R Direction of rotation Emergency positioning function selectable by mounting L / R Manual adjustment no Angle of rotation max. 95° Angle of rotation Note adjustable from 37% in 2.5% increments (with mechanical stop) mechanical stop) Running time motor 75 s / 90° Running time emergency adjustment function <25 s / 90° Motor sound power level 50 dB(A) Axle mounting Universal clamping block 6...12.7 mm Mechanical position indicator Service life min. 60,000 emergency positions Safety class Protection class IEC/EN III Safety extra-low voltage Protection class IEC/EN IP42 EMC CE according to 2004/108/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 Mode of operation Type 1.AA Overvoltage category III Rated impulse voltage Supply / Control 0.8 kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.69 kg
Shut-off damper steel, galvanised with EPDM sealing lips for airtight installation to DIN EN 12237 class D best class of this standard Damper blade with EPDM sealing lip tight-closing to DIN EN 1751 class 4 best class of this standard Damper blade with two bearings; damper with motorised bracket, rotatable for actuator mounting at any position, 360° around damper shaft With Belimo LM24A damper actuator for open/close control of dampers, for 24 V, 5 NM torque, for dampers up to 1m² damper area The shut-off damper is inserted between two ventilation ducts Technical data sheet Belimo LM24A Electrical data Rated voltage AC/DC 24 V Nominal voltage Frequency 50/60 Hz Functional range AC 19.2...28.8 V / DC 19.2...28.8 V Power consumption operation 1 W Power consumption idle position 0.2 W Power consumption dimensioning 1.5 VA Power supply / control connection Cable 1 m, 3 x 0.75 mm² Parallel operation Yes (observe performance data) Functional data Motor torque min. 5 Nm Direction of rotation Motor selectable with switch 0 (anti-clockwise) / 1 (clockwise rotation) Manual adjustment Gear disengagement with push button, lockable Angle of rotation max. 95° Angle of rotation Note can be limited on both sides by adjustable mechanical stops Motor running time 150 s / 90° Motor sound power level 35 dB(A) Axle mounting Universal clamping block 6...20 mm Mechanical position indicator, clip-on Safety Protection class IEC/EN III Safety extra-low voltage Protection class UL UL Class 2 Supply Protection class IEC/EN IP54 Protection class NEMA/UL NEMA 2, UL Enclosure Type 2 EMC CE according to 2004/108/EC Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 UL cULus certification in accordance with UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02 Mode of operation Type 1 Rated impulse voltage Supply / Control ##########_45__ kV Degree of pollution of the environment 3 Ambient temperature -30...50°C Storage temperature -40...80°C Ambient humidity 95% r.H, non-condensing Maintenance maintenance-free Weight approx. Weight approx. 0.49 kg