Type AK

For low-leakage shut-off

Circular shut-off dampers for shutting off volume flows in ventilation ducts of air conditioning systems

  • Maintenance-free damper blade mechanism
  • Closed blade air leakage to EN 1751, up to class 4
  • Casing air leakage to EN 1751, class C


Optional equipment and accessories

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

Shut-off damper, variant AK, with actuator 00131938_0
  • Application
  • Description

Application

  • Circular shut-off dampers Type AK for shutting off or restricting the airflow in ventilation ducts of air conditioning systems

Special features

  • Damper blade can be actuated manually, electrically or pneumatically
  • Low-leakage shut-off
  • Safety function provided by optional spring return actuator

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

  • Min/Max actuators: Actuators for switching between minimum and maximum volume flow rate setpoint values
  • 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

Materials and surfaces

Galvanised sheet steel construction

  • Casing and damper blade made of galvanised sheet steel
  • Blade seal made of TPE plastic
  • Plain bearings made of polyurethane


Powder-coated construction (P1)

  • Casing made of galvanised sheet steel, powder-coated
  • Shut-off damper and shaft made of stainless steel 1.4301


Stainless steel construction (A2)

  • Casing, damper blade and shaft made of stainless steel 1.4301

Technical information

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code
Schematic illustration of the AK 00137312_0

① Damper blade

② Lip seal

③ Casing

④ Actuator

Nominal sizes100 – 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)
100 10 36 5<15
100 40 144 1027
100 65 234 2538
100 95 342 5549
125 15 54 5<15
125 60 216 1024
125 105 378 2536
125 150 540 5045
160 25 90 5<15
160 100 360 1022
160 175 630 2033
160 250 900 4541
200 40 144 5<15
200 160 576 1021
200 280 1008 2031
200 405 1458 4039
250 60 216 <5<15
250 250 900 519
250 430 1548 1529
250 615 2214 3038
315 100 360 <5<15
315 410 1476 521
315 720 2592 1534
315 1030 3708 2543
400 170 612 <5<15
400 670 2412 534
400 1175 4230 1050
400 1680 6048 1561


Circular shut-off dampers for shutting off or restricting the airflow in ventilation ducts of air conditioning systems, for supply air or extract air, available in 7 nominal sizes

Suitable for duct pressures up to 1500 Pa.

Ready-to-install unit consists of the casing with a damper blade.

Spigot with groove for lip seal, suitable for connecting ducts according to EN 1506 or EN 13180.

Position of the damper blade indicated externally at the shaft extension.

Closed blade air leakage to EN 1751, class 4 (nominal sizes 100, 125 and 160, class 3).

Casing air leakage to EN 1751, class C.

Special features

  • Damper blade can be actuated manually, electrically or pneumatically
  • Low-leakage shut-off
  • Safety function provided by optional spring return actuator

Materials and surfaces

Galvanised sheet steel construction

  • Casing and damper blade made of galvanised sheet steel
  • Blade seal made of TPE plastic
  • Plain bearings made of polyurethane


Powder-coated construction (P1)

  • Casing made of galvanised sheet steel, powder-coated
  • Shut-off damper and shaft made of stainless steel 1.4301


Stainless steel construction (A2)

  • Casing, damper blade and shaft made of stainless steel 1.4301

Construction

  • Galvanised sheet steel
  • P1: Powder-coated, silver grey (RAL 7001)
  • A2: Stainless steel

Technical data

  • Nominal sizes: 100 – 400 mm
  • Acceptable static differential pressure: 1500 Pa

00131621_0

 Type
AK       Shut-off damper

 Material
       No entry: galvanised sheet steel
P1       Powder-coated, silver grey (RAL 7001)
A2       Stainless steel

 Construction
       No entry: none
FL       Flanges on both ends

 Nominal size [mm]
100
125
160
200
250
315
400

 

 Accessories
       No entry: none
D2       Lip seals on both ends
G2       Matching flanges for both ends

 Actuator
       No entry: manual operation
       For example
B20       24 V AC/DC, modulating 2 – 10 V DC
B30       24 V AC/DC, 3-point
B32       24 V AC/DC, 3-point, with auxiliary switch
TN0       Pneumatic 0.2 – 1 bar

 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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Contact

Thank you for your message!

Visual contact Visual contact

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.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265