Application
Special features
Classification
Electronic control: Equipment group II
Pneumatic control: Equipment group II
Nominal sizes
Construction
Parts and characteristics
Attachments
Construction features
Materials and surfaces
Standards and guidelines
Maintenance
Nominal sizes | 125 – 400 mm |
Acceptable static differential pressure | 1500 Pa |
Operating temperature | 10 – 50 °C |
Electronic
Supply voltage | 24 – 230 V AC ± 10 %, 50/60 Hz |
Power rating | 120 VA max. |
IEC protection class | I (protective earth) |
Protection level | IP 42 |
EC conformity | ATEX to 2014/34/EU, EMC to 2014/30/EU, low voltage to 2014/35/EU |
Pneumatic
Control pressure | 0 – 1.2 bar |
Maximum pressure | 1.5 bar |
Compressed air | Compressed air for instruments, free of oil, water and dust |
Protection level | IP 42 |
Air consumption (100 % stroke) | 0.3 l/n (nominal sizes 125 – 250) to 0.5 l/n max. (nominal size 315 – 400) |
EC conformity | ATEX to 2014/34/EU |
Quick sizing tables provide a good overview of the room sound pressure levels that can be expected. Approximate intermediate values can be interpolated. Precise intermediate values and spectral data can be calculated with our Easy Product Finder design programme.
Quick sizing: Static differential pressure and sound pressure levels with open damper blade
125 | 49 | 177 | 5 | 20 |
125 | 74 | 265 | 12 | 28 |
125 | 98 | 353 | 21 | 34 |
125 | 147 | 530 | 46 | 45 |
160 | 80 | 290 | 4 | 18 |
160 | 121 | 434 | 10 | 26 |
160 | 161 | 579 | 17 | 32 |
160 | 241 | 869 | 39 | 40 |
200 | 126 | 452 | 4 | 17 |
200 | 188 | 679 | 8 | 24 |
200 | 251 | 905 | 14 | 29 |
200 | 377 | 1357 | 32 | 37 |
250 | 196 | 707 | 3 | 16 |
250 | 295 | 1060 | 6 | 22 |
250 | 393 | 1414 | 11 | 28 |
250 | 589 | 2121 | 25 | 37 |
315 | 312 | 1122 | 2 | 16 |
315 | 468 | 1683 | 4 | 24 |
315 | 623 | 2244 | 8 | 30 |
315 | 935 | 3367 | 18 | 41 |
400 | 503 | 1810 | 1 | 26 |
400 | 754 | 2714 | 3 | 37 |
400 | 1005 | 3619 | 5 | 45 |
400 | 1508 | 5429 | 10 | 58 |
Circular shut-off dampers for shutting off or restricting the airflow in potentially explosive atmospheres, for supply air or extract air, available in 6 nominal sizes.
Suitable for duct pressures up to 1500 Pa.
Ready-to-install unit consists of the casing with damper blade, and parts for equipotential bonding and for use in potentially explosive atmospheres.
Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180.
Closed blade air leakage to EN 1751, class 4 (nominal sizes 125 and 160, class 3).
Casing air leakage to EN 1751, class C.
Special features
Materials and surfaces
Construction
Technical data
Sizing data
Air-regenerated noise
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.
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Order example: AK-EX/125/T0S
Material | Galvanised sheet steel |
Nominal size | 125 mm |
Actuator | Electric actuator |
Order example: AK-EX/200/P50/NO
Material | Galvanised sheet steel |
Nominal size | 200 mm |
Actuator | Pneumatic actuator |
Damper blade position | Pressure off to OPEN |
AK-Ex, electric actuators
Open/Close actuators | |||
T0S | Actuator | 24 – 240 V AC/DC | - |
T0F | Spring return actuator | 24 – 240 V AC/DC | - |
T0X | Actuator | 24 – 240 V AC/DC | 2 |
T0Y | Spring return actuator | 24 – 240 V AC/DC | 2 |
AK-Ex, pneumatic actuators
Pneumatic actuators | |||
P50 | Pneumatic actuator | 0.2 – 1.2 bar | – |
AK-Ex
mm | mm | mm | mm | |
AK-Ex
AK-Ex/.../T0* kg |
AK-Ex/.../P.. kg | |
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Installation and commissioning
Space required for commissioning and maintenance
Sufficient space must be kept clear near any attachments to allow for commissioning and maintenance. It may be necessary to provide sufficiently sized inspection access openings.
Space required
125 | 600 | 220 | 300 |
160 | 600 | 220 | 300 |
200 | 600 | 310 | 300 |
250 | 600 | 310 | 300 |
315 | 600 | 460 | 300 |
400 | 600 | 460 | 300 |
Principal dimensions
ØD [mm]
Shut-off and flow adjustment dampers made of stainless steel: Outer diameter of the connecting spigot
Shut-off dampers made of plastic: Inside diameter of the connecting spigot
ØD₁ [mm]
Pitch circle diameter of flanges
ØD₂ [mm]
Outer diameter of flanges
ØD₄ [mm]
Inside diameter of the screw holes of flanges
L [mm]
Length of unit including connecting spigot
L₁ [mm]
Length of casing or acoustic cladding
n [ ]
Number of flange screw holes
T [mm]
Flange thickness
m [kg]
Unit weight including the minimum required attachments
Acoustic data
LPA [dB(A)]
A-weighted sound pressure level of air-regenerated noise of the shut-off or flow adjustment damper, system attenuation taken into account
All sound pressure levels are based on 20 μPa.
Volume flow rates
V [m³/h] and [l/s]
Volume flow rate
Differential pressure
Δpst [Pa]
Static differential pressure
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Contact
We are here for you
Please specify your message and type of request.
Tel.: +60 6 678 8188 | Fax: +60 6 678 8288 (388)
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +60 6 678 8188 | Fax: +60 6 678 8288 (388)