AK-Ex

Shut-off damper Type AK-Ex

ATEX-Zertifizierung

ATEX-compliant parts and units

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

Application

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

Classification

Electronic control: Equipment group II

Zones 1 and 2 (atmosphere: gases): II 2 G c II T5/T6
Zones 21 and 22 (atmosphere: dusts): II 2 D c II 80 °C

Pneumatic control: Equipment group II

Zones 1 and 2 (atmosphere: gases): II 2 G c II T5/T6

Nominal sizes

125, 160, 200, 250, 315, 400

Description

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 1.4301 (A2) or powder-coated (P1)

Standards and guidelines

Directive 94/9/EC: Equipment and protective systems intended for use in potentially explosive atmospheres
Closed blade air leakage to EN 1751, class 4 (nominal sizes 100 and 160, class 3)
Nominal sizes 125 and 160 meet the general requirements, nominal sizes 200 – 400 meet the increased requirements of DIN 1946, part 4, with regard to the acceptable closed blade air leakage
Casing air leakage to EN 1751, class C

Maintenance

Maintenance-free as construction and materials are not subject to wear

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

Schematic illustration of the AK-Ex with electronic control

① Cover
② Auxiliary switch
③ Electric actuator
④ Terminal box
⑤ Cable bushing
⑥ Equipotential bonding
⑦ Damper blade

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

Nominal size	V		Differential pressure	Air-regenerated noise
Nominal size	V		∆p_st	L_PA
Nominal size	V		∆p_st	L_PA
Nominal size	l/s	m³/h	Pa	dB(A)
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

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 1.4301 (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

Sizing data

V _______________________ [m³/h]

Air-regenerated noise

L_PA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

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

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

Variants, Attachments, Dimensions and weight

Schematic illustration of the AK-Ex with electronic control

① Shut-off damper
② Electric actuator
③ Terminal box
④ Switch (to be provided by others)

AK-Ex, electric actuators

Order code detail	Actuator	Supply voltage	Auxiliary switch
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

Order code detail	Actuator	Control pressure	Auxiliary switch
Pneumatic actuators
P50	Pneumatic actuator	0.2 – 1.2 bar	–

AK-Ex

AK-Ex

Nominal size	ØD mm	B₃ mm	H₃ mm	C mm
125	124	372	221	129
160	159	372	221	111
200	199	463	311	182
250	249	463	311	157
315	314	627	461	289
400	399	627	461	246

AK-Ex

Nominal size	AK-Ex/.../T0* m kg	AK-Ex/.../P.. m kg
125	16.5	15.0
160	16.5	15.0
200	18.0	16.5
250	18.0	16.5
315	22.0	20.5
400	22.0	20.5

Installation details, Basic information and nomenclature

Access to attachments 00187631_0

Installation and commissioning

Connections for equipotential bonding: Suitable cables must be connected by others
Any installation orientation

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

Nominal size	①	②	③
Nominal size	mm
125	600	220	300
160	600	220	300
200	600	310	300
250	600	310	300
315	600	460	300
400	600	460	300

Definition of noise

① Air-regenerated noise
② Case-radiated noise

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

L_PA [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

Δp_st [Pa]

Static differential pressure

Downloads

product information

Product data sheet Type AK-Ex

AK-Ex_PD_2021_06_02_DE_en Product data sheet 1 MB pdf

certificates

Declaration of conformity or declaration of incorporation Type AK-Ex

CE_2019_08_AK-Ex_de_en_fr Declaration of conformity or declaration of incorporation 63 KB pdf
Declaration of hygiene conformity Type AK-Ex

AK-Ex_HC_2020_06_08_DE_en Hygiene certificate 1,8 MB pdf
EC Declaration of conformity

CE_2015_03_AK-Ex_DE_de_en_fr.pdf Certificate 540 KB pdf
Leakage classification of TROX ventilation components

Leckageklassifizierung-_v1_2022_07_07_DE_en Certificate 650 KB pdf

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AK-EX

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

Application

Description

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

Variants, Attachments, Dimensions and weight

Installation details, Basic information and nomenclature

Downloads

product information

Product data sheet Type AK-Ex

certificates

Declaration of conformity or declaration of incorporation Type AK-Ex

Declaration of hygiene conformity Type AK-Ex

EC Declaration of conformity

Leakage classification of TROX ventilation components

TROX Services

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

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