Type AK-Ex

For low-leakage shut-off of volume flows in potentially explosive atmospheres (ATEX)

Circular shut-off dampers for shutting off ducts, approved and certified for potentially explosive atmospheres (ATEX)

  • ATEX-compliant construction and parts
  • Approved for all gases, mists and vapours in zones 1 and 2, with electric actuator additionally for dusts in zones 21 and 22
  • Suitable for supply air and extract air
  • Electric or pneumatic actuator
  • Any installation orientation
  • Closed blade air leakage to EN 1751, up to class 4
  • Casing air leakage to EN 1751, class C


Optional equipment and accessories

  • Spring return actuator
  • Auxiliary switch with adjustable switching points for capturing the end positions

Shut-off damper Type AK-Ex 00136579_0
  • Application
  • Description

Application

  • Circular EXCONTROL shut-off dampers Type AK-Ex for shutting off or restricting the airflow in ventilation ducts of air conditioning systems
  • For use in potentially explosive atmospheres (ATEX)
  • Input signal to control shut-off damper blade is to be provided by others

Special features

  • ATEX mark and certification
  • ATEX equipment group II, approved for use in zones 1 and 2; electric actuator also for zones 21 and 22

Construction

  • Galvanised sheet steel
  • P1: Inner duct powder-coated, silver grey (RAL 7001)
  • A2: Inner duct in stainless steel

Parts and characteristics

  • Ready-to-install shut-off damper
  • Damper blade with blade mechanism
  • Connection for equipotential bonding
  • Cable bushings suitable for use in potentially explosive atmospheres
  • ATEX-compliant actuator is factory assembled and wired

Attachments

  • Electronic actuator:
  • Auxiliary switch for capturing the end positions
  • Pneumatic actuator

Construction features

  • Circular casing
  • Construction and materials comply with the EU directive for use in potentially explosive atmospheres (ATEX)
  • Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180

Materials and surfaces

  • Casing and damper blade made of galvanised sheet steel
  • Blade seal made of TPE plastic
  • Plain bearings made of polyurethane
  • Electric actuator made of die cast aluminium
  • Pneumatic actuator made of plastic
  • Inner tube either made of stainless steel (A2) or powder-coated (P1)

Technical information

  • Technical data
  • Quick sizing
  • Specification text
  • Order code

Nominal sizes125 – 400 mm
Acceptable static differential pressure1500 Pa
Operating temperature10 – 50 °C


Quick sizing: Static differential pressure and sound pressure levels with open damper blade

Nominal sizeVVDifferential pressureAir-regenerated noise
Nominal sizeVV∆pstLPA
Nominal sizeVV∆pstLPA
Nominal sizel/sm³/hPadB(A)
125 49 177 520
125 74 265 1228
125 98 353 2134
125 147 530 4645
160 80 290 418
160 121 434 1026
160 161 579 1732
160 241 869 3940
200 126 452 417
200 188 679 824
200 251 905 1429
200 377 1357 3237
250 196 707 316
250 295 1060 622
250 393 1414 1128
250 589 2121 2537
315 312 1122 216
315 468 1683 424
315 623 2244 830
315 935 3367 1841
400 503 1810 126
400 754 2714 337
400 1005 3619 545
400 1508 5429 1058


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

  • ATEX mark and certification
  • ATEX equipment group II, approved for use in zones 1 and 2; electric actuator also for zones 21 and 22

Materials and surfaces

  • Casing and damper blade made of galvanised sheet steel
  • Blade seal made of TPE plastic
  • Plain bearings made of polyurethane
  • Electric actuator made of die cast aluminium
  • Pneumatic actuator made of plastic
  • Inner tube either made of stainless steel (A2) or powder-coated (P1)

Construction

  • Galvanised sheet steel
  • P1: Inner duct powder-coated, silver grey (RAL 7001)
  • A2: Inner duct in stainless steel

Technical data

  • Nominal sizes: 125 – 400 mm
  • Acceptable static differential pressure: 1500 Pa

00131623_0

 Type
AK-Ex       Shut-off damper for potentially explosive atmospheres

 Material
       No entry: galvanised sheet steel
P1       Inner duct powder-coated, silver grey (RAL 7001)
A2       Inner duct in stainless steel

 

Nominal size [mm]
125
160
200
250
315
400

 Actuator
       Electronic
T0S       Actuator
T0F       Spring return actuator
T0X       Actuator with auxiliary switch
T0Y       Spring return actuator with auxiliary switch
       Pneumatic
P50       Actuator

 Damper blade position
       Only for spring return actuators and pneumatic actuators
NO       Pressure off/power off to OPEN
NC       Power off/Pressure off to close

 

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +7 495 221-5161 | Fax: +7 495 221-5171