General Information
Application
- Circular shut-off dampers for shutting off or restricting the airflow in ventilation ducts of air conditioning systems
Special characteristics
- Damper blade can be actuated manually, electrically or pneumatically
- Low-leakage shut-off
- Safety function provided by optional spring return actuator
Nominal sizes
- 4, 5, 6, 8, 10, 12, 16
Variants
- AK: Shut-off damper
- AK-FL: Shut-off damper with flanges on both ends
Construction
- Galvanised sheet steel
- P1: Powder-coated, silver grey (RAL 7001)
- A2: Stainless steel
Parts and characteristics
- Ready-to-install shut-off damper
- Damper blade with blade mechanism
Attachments
- Open/Close actuators: For the opening and closing of shutoff dampers in air conditioning systems
- Auxiliary switch for capturing the end positions
Accessories
- Lip seals on both ends (factory fitted)
- Matching flanges for both ends
Construction features
- Circular casing
- Spigot suitable for circular ducts to EN 1506 or EN 13180
- Spigot with groove for lip seal
- Position of the damper blade indicated externally at the shaft extension
- AK-FL: Flanges to EN 12220
Material and surfaces
Galvanised sheet steel construction
- Casing and damper blade made of galvanised sheet steel
- Blade seal made of TPE plastic
- Plastic plain bearings TPU
Powder-coated construction (P1)
- Casing made of galvanised sheet steel, powder-coated
- Damper blade made of stainless steel 1.4301
- Shaft made of stainless steel 1.4305
Stainless steel construction (A2)
- Casing and damper blade made of stainless steel 1.4301
- Shaft made of stainless steel 1.4305
Standards and guidelines
- Meets the hygiene requirements of VDI 6022
- Closed blade air leakage to EN 1751, class 4 (nominal sizes 4, 5 and 6, class 3)
- Nominal sizes 4, 5, and 6 meet the general requirements, nominal sizes 8 – 16 meet the increased requirements of DIN 1946, part 4, with regard to the acceptable closed blade air leakage
- Casing air leakage according to EN 1751, class C
Maintenance
- Low-maintenance, as construction and materials are not subject to wear and tear
Disclosure of Chemicals
- RoHS EU Directive 2011/65/EU (RoHS)
- This product or single variants comply with EU Directive 2011/65/EU (RoHS) on the restriction of the use of certain hazardous substances in electrical and electronic equipment. For more information, please refer to our Environmental Product Declarations.
- REACH 1907/2006 (EC Regulation REACH)
- This product or single variants comply with the provisions of EC Regulation No. 1907/2006, also known as REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals). For more information, please refer to our Environmental Product Declarations.
