Order lines: 0

Ahlsell Products Ventilation Duct systems Galvanised duct system Galvanised dampersCircular Dampers

Circular Dampers

Do you work with ventilation and are looking for duct systems? We at Ahlsell help you find ventilation ducts for houses and offices. Regardless of whether you are working on larger projects for the indoor climate or other ventilation solutions, we have the products. Here you will find white lacquered ventilation ducts, plastic duct systems for indoor installation, and spiral beveled ducts. We have the range for those looking for duct systems for ventilation. If you are looking for shut-off dampers and hand controls, you will also find this. We carry most major brands. Explore our wide range of duct systems and ventilation ducts here in the online store or visit your nearest Ahlsell store.

Measuring and Regulating Damper ARMS White RAL9003, a-collection

Measuring and Regulating Damper ARMS White RAL9003, a-collection

Art. no.: 6542832

This damper of type IRIS is a precision device for controlling and adjusting air flow in circular ducts. Each damper is individually calibrated to provide the best measurement results. Airflow is obtained by measuring the pressure drop on the diffuser’s fixed measuring nipples and reading the corresponding airflow from the diagram.
Thanks to the central throttling of airflow in the diffuser, the air stream in the duct is even, and the noise level very low.
Can be opened 100%, so it is perfect for installation in ducts that require cleaning.
Made of galvanised sheet steel and provided with adjustment scale and adapters. Conforms to density class C.
White lacquered in RAL9003.

Measuring and Regulating Damper ARMS, a-collection

Measuring and Regulating Damper ARMS, a-collection

Art. no.: 6542800B

This damper of type IRIS is a precision device for controlling and adjusting air flow in circular ducts. Each damper is individually calibrated to provide the best measurement results. Airflow is obtained by measuring the pressure drop on the diffuser’s fixed measuring nipples and reading the corresponding airflow from the diagram.
Thanks to the central throttling of airflow in the diffuser, the air stream in the duct is even, and the noise level very low.
Can be opened 100%, so it is perfect for installation in ducts that require cleaning.
Made of galvanised sheet steel and provided with adjustment scale and adapters. Conforms to density class C.

Adjustment Damper BDEP-1, FläktGroup

Adjustment Damper BDEP-1, FläktGroup

Art. no.: 6642401

The adjustment damper BDEP-1 is intended for use in systems with circular ducts. The dampers consist of a cylindrical housing and damper blade. They are set manually and are equipped with a graduated scale for setting the damper angle. For damper sizes up to 031, the damper angle is set with a knob , on larger sizes with a control handle. The damper angle is locked with a screw. The seal is made of solid EPDM rubber has very good resistance to moisture, air pollution and solar radiation and can withstand temperatures between -30 ° C to 80 ° C with retained function. Sizes 040 - 063 are adapted to 50 mm external insulation Density class 0 according to SS-EN1751: 1998 and VVS AMA 98 respectively.

The length refers to the length of the damper, excluding connections.

Adjustment Damper BDEP-1, FläktGroup

Throttle BDEP-4, FläktGroup

Throttle BDEP-4, FläktGroup

Art. no.: 6642415

Adjustment and shut-off damper. Density class 4 in accordance with AMA 98 and Swedish & European standard SS-EN 1751.

Throttle BDEP-4, FläktGroup

Shut-off damper BDEP-40 with motor shelf, FläktGroup

Shut-off damper BDEP-40 with motor shelf, FläktGroup

Art. no.: 6642581

The damper BDEP-40 is intended for use in systems with circular ducts for shutting off the air flow. The dampers consist of a cylindrical housing and damper blade and a universal motor shelf. Motor is not included. They are set manually and are equipped with a graduated scale for setting the damper angle. For damper sizes up to 031, the damper angle is set with a knob, on larger sizes with a control handle.The damper angle is locked with a screw.The seal is made of solid EPDM rubber has very good resistance to moisture, air pollution and solar radiation and can withstand temperatures between -30° C to 80° C with retained function Sizes 040 - 063 are adapted to 50 mm external insulation Density class 4 according to SS-EN1751: 1998 and HVAC AMA 98 respectively.

The length refers to the length of the damper, excluding connections.
Delivered without motor.

Measuring and Control Damper IRIS, FläktGroup

Measuring and Control Damper IRIS, FläktGroup

Art. no.: 6642871

IRIS is a damper intended for air flow measurement and control. IRIS consists of control discs, adjusting nut or handle (size 80), and adjustment scale plus manometer connections and body. The connection sockets are fitted with rubber seals made of EPDM material. The damper's body and control discs are made of hot-dip galvanized sheet steel, polyacetal control unit and the measuring nipple made of TRP plastic. Delivered without individual packaging and without adjustment key. Meets density class C. The air flow at 35 dB (A) is specified at 50 Pa.

Measuring and Regulating Damper PRA, Halton

Measuring and Regulating Damper PRA, Halton

Art. no.: 6642814

PRA is a cone-shaped iris damper and has manual adjustment with knob. The adjustment damper contains an adjustable cone and measuring socket for measuring the pressure difference in the air flow. The measuring damper housing and the cone-shaped iris blades are made of galvanized steel. The air flow calculation is based on measuring the pressure difference caused by the air flow over the damper cone. The adjustment damper is provided with an indicator and marking for the adjustment position which is used during cleaning. The installation direction of the damper must correspond to the air flow direction. The air flow direction is marked with an arrow on the housing. The height refers to the slider and is added to the diameter of the damper. The density class refers to the housing. Temperature range -30° C to +70° C

Backdraft Damper, a-collection

Backdraft Damper, a-collection

Art. no.: 6526107

For connection to circular ducts. Made of galvanised steel plate. The two discs in the jaw damper are spring-loaded, which means that the damper can be mounted in the direction of your choice.

Shut-off Damper with Motor Shelf KRTS-4, ETS

Shut-off Damper with Motor Shelf KRTS-4, ETS

Art. no.: 66642581

Damper with motor shelf for regulating the air flow in round duct systems. KRTS-4 has density class C on housing and density class 4 on shut-off according to EVS-EN 1751: 2001. Made of galvanized sheet steel and equipped with rubber seals on connections. For manual adjustment of air flows, handles are available as accessories. For automatic adjustment, Belimo motors are available in various designs. Damper shaft 6x6mm.

Measuring and Regulating Damper SPI, Systemair

Measuring and Regulating Damper SPI, Systemair

Art. no.: 6612801

An iris damper for flow regulation in round ducts. Used for both supply air and exhaust. The iris damper is equipped with controls and measuring nipples for flow adjustment.
For more information, see www.ekovent.se.

Shut-off damper ABC-TS3, ABC Vent

Shut-off damper ABC-TS3, ABC Vent

Art. no.: 66542416

Throttle damper, prepared for 50mm insulation and with motor bracket and hand-switch 0 to 90 degrees. Approved for density class 3. Galvanised design

Adjustment Damper KROS, manual, ETS

Adjustment Damper KROS, manual, ETS

Art. no.: 66642402

Damper for regulating the air flow in round duct systems. Stepless adjustable setting. Density class D according to EN 1751. Made of galvanized sheet steel. Equipped with EPDM rubber gaskets on the connections. The length includes connections.

Injusteringsspjäll HIS, Hallström

Injusteringsspjäll HIS, Hallström

Art. no.: 9942401

Avstängningsspjäll HISC, Hallström

Avstängningsspjäll HISC, Hallström

Art. no.: 9942421

Avstängningsspjäll HISC-L med motorhylla, Hallström

Avstängningsspjäll HISC-L med motorhylla, Hallström

Art. no.: 9942581

Avstängningsspjäll HISC-L med motorhylla, Hallström

Showing 15 of 15