- VAV terminal unit for variable volume flow control
- With flanges to make detachable connections to the ductwork
Application
Special features
Nominal sizes
Variants
Parts and characteristics
Attachments
Accessories
Useful additions
Construction features
Materials and surfaces
Standards and guidelines
Fulfils the hygiene requirements of
Casing leakage
Closed blade air leakage
Maintenance
The VAV terminal unit is fitted with an effective pressure sensor for measuring the volume flow rate.
The control components (attachments) include an effective pressure transducer that transforms the effective pressure into an electric signal, a controller and an actuator as individual components (Universal or LABCONTROL).
For most applications, the setpoint value comes from an external setpoint adjuster.
The controller compares the actual value with the setpoint value and alters the control signal of the actuator if there is a difference between the two values.
Quick sizing tables provide a good overview of the minimum differential pressures, the volume flow rate accuracy and the room sound pressure levels that can be expected. Intermediate values may be achieved by interpolation.
The sound power levels for calculating the sound pressure levels were measured in the TROX laboratory according to DIN EN ISO 5135 - see "Basic information and nomenclature".
Precise results and spectral data for all control components can be calculated with our Easy Product Finder design program. The first selection criteria for the nominal size are the actual volume flow rates qvmin and qvmax.
Volume flow rate ranges and minimum differential pressure values
The minimum differential pressure of VAV terminal units is an important factor in designing the ductwork and in rating the fan including speed control. It must be ensured that for all operating conditions and for all terminal units a sufficient pressure differential is applied to each controller (Δpstat,min). The measurement points for fan speed control must be selected accordingly. The volume flow rates given for VAV terminal units depend on the nominal size and on the control component (attachment) that is installed.
Volume flow rate ranges and minimum differential pressure values
Control component for static pressure measurements
Attachment: XD0, XD4, BP3, BPG, BPB, BB3, BBB, BUSN, BUSNF, BUSS, TUN, TUNF, TUS, TUSD, ELAB
NS | qv [l/s] | qv [m³/h] | Δpstmin [Pa] | Δqv [±%] | |||
---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ||||
125 | 20 | 70 | 2 | 2 | 2 | 2 | 10 |
125 | 59 | 213 | 10 | 12 | 13 | 15 | 7 |
125 | 99 | 356 | 28 | 32 | 36 | 40 | 6 |
125 | 138 | 499 | 54 | 62 | 70 | 77 | 6 |
160 | 34 | 122 | 2 | 2 | 2 | 2 | 10 |
160 | 104 | 373 | 12 | 13 | 14 | 15 | 7 |
160 | 174 | 625 | 32 | 35 | 38 | 42 | 6 |
160 | 243 | 876 | 62 | 68 | 75 | 81 | 5 |
200 | 55 | 196 | 2 | 2 | 2 | 2 | 10 |
200 | 167 | 601 | 11 | 12 | 12 | 13 | 7 |
200 | 279 | 1005 | 29 | 31 | 34 | 36 | 6 |
200 | 391 | 1410 | 56 | 61 | 66 | 71 | 5 |
250 | 85 | 306 | 1 | 1 | 2 | 2 | 10 |
250 | 261 | 939 | 9 | 10 | 10 | 11 | 7 |
250 | 437 | 1572 | 24 | 26 | 28 | 30 | 6 |
250 | 612 | 2205 | 47 | 51 | 55 | 59 | 5 |
315 | 139 | 500 | 1 | 1 | 1 | 1 | 10 |
315 | 426 | 1533 | 6 | 6 | 7 | 8 | 7 |
315 | 713 | 2565 | 16 | 17 | 19 | 21 | 6 |
315 | 999 | 3598 | 30 | 33 | 37 | 40 | 5 |
400 | 231 | 830 | 1 | 1 | 1 | 1 | 10 |
400 | 707 | 2546 | 4 | 5 | 5 | 5 | 7 |
400 | 1184 | 4262 | 11 | 12 | 13 | 14 | 6 |
400 | 1660 | 5978 | 21 | 24 | 26 | 28 | 5 |
① Basic unit
② Basic unit with circular silencer CAK, insulation thickness 50 mm, length 500 mm
③ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1000 mm
④ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1500 mm
Quick sizing table for sound pressure levels
The quick sizing tables are based on generally accepted attenuation levels. If the sound pressure level exceeds the required level, a larger air terminal unit and/or a silencer or acoustic cladding is required. For more information on the acoustic data, see basic information and nomenclature.
Quick sizing table for air-regenerated noise LPA
Controller including silencer
(total flow rate range of type)
NS | qv [l/s] | qv [m³/h] | 150 Pa | 500 Pa | ||||||
---|---|---|---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ① | ② | ③ | ④ | |||
125 | 20 | 70 | 35 | 20 | < 15 | < 15 | 41 | 24 | 18 | < 15 |
125 | 59 | 213 | 46 | 32 | 27 | 22 | 52 | 37 | 31 | 26 |
125 | 99 | 356 | 51 | 38 | 33 | 29 | 57 | 43 | 37 | 32 |
125 | 138 | 499 | 54 | 42 | 37 | 33 | 60 | 47 | 41 | 37 |
160 | 34 | 122 | 36 | 23 | 18 | 15 | 42 | 27 | 22 | 17 |
160 | 104 | 373 | 47 | 35 | 30 | 27 | 53 | 40 | 34 | 29 |
160 | 174 | 625 | 51 | 39 | 35 | 31 | 57 | 44 | 39 | 34 |
160 | 243 | 876 | 53 | 41 | 37 | 34 | 58 | 47 | 41 | 37 |
200 | 55 | 196 | 41 | 28 | 23 | 19 | 51 | 40 | 35 | 30 |
200 | 167 | 601 | 44 | 32 | 27 | 23 | 55 | 43 | 38 | 34 |
200 | 279 | 1005 | 44 | 32 | 27 | 24 | 55 | 43 | 38 | 34 |
200 | 391 | 1410 | 44 | 32 | 29 | 28 | 55 | 43 | 38 | 34 |
250 | 85 | 306 | 41 | 29 | 23 | 18 | 52 | 40 | 34 | 29 |
250 | 261 | 939 | 44 | 33 | 28 | 24 | 55 | 44 | 39 | 34 |
250 | 437 | 1572 | 44 | 35 | 30 | 26 | 55 | 45 | 40 | 36 |
250 | 612 | 2205 | 44 | 36 | 32 | 29 | 55 | 45 | 41 | 37 |
315 | 139 | 500 | 43 | 33 | 28 | 24 | 49 | 38 | 33 | 29 |
315 | 426 | 1533 | 47 | 39 | 34 | 31 | 53 | 44 | 40 | 36 |
315 | 713 | 2565 | 50 | 42 | 37 | 34 | 56 | 47 | 43 | 40 |
315 | 999 | 3598 | 51 | 43 | 39 | 36 | 57 | 49 | 45 | 42 |
400 | 231 | 830 | 40 | 32 | 28 | 25 | 46 | 39 | 35 | 31 |
400 | 707 | 2546 | 45 | 38 | 35 | 32 | 52 | 45 | 41 | 38 |
400 | 1184 | 4262 | 48 | 41 | 38 | 35 | 54 | 48 | 44 | 41 |
400 | 1660 | 5978 | 49 | 43 | 40 | 37 | 56 | 49 | 46 | 43 |
Air-regenerated noise LPA [dB] at static differential pressure Δpst 150 or 500 Pa
① Basic unit
② Basic unit with circular silencer CAK, insulation thickness 50 mm, length 500 mm
③ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1000 mm
④ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1500 mm
n.a.: The specified static differential pressure Δpst is lower than the minimum differential pressure Δpst min.
Quick sizing table for case-radiated noise LPA
NS | qv [l/s] | qv [m³/h] | 150 Pa | 500 Pa |
---|---|---|---|---|
125 | 20 | 70 | 18 | 30 |
125 | 59 | 213 | 26 | 38 |
125 | 99 | 356 | 29 | 41 |
125 | 138 | 499 | 32 | 44 |
160 | 34 | 122 | 19 | 30 |
160 | 104 | 373 | 29 | 40 |
160 | 174 | 625 | 34 | 44 |
160 | 243 | 876 | 37 | 47 |
200 | 55 | 196 | 30 | 41 |
200 | 167 | 601 | 33 | 45 |
200 | 279 | 1005 | 35 | 46 |
200 | 391 | 1410 | 36 | 47 |
250 | 85 | 306 | 28 | 40 |
250 | 261 | 939 | 33 | 45 |
250 | 437 | 1572 | 36 | 48 |
250 | 612 | 2205 | 37 | 49 |
315 | 139 | 500 | 31 | 40 |
315 | 426 | 1533 | 39 | 48 |
315 | 713 | 2565 | 43 | 51 |
315 | 999 | 3598 | 45 | 54 |
400 | 231 | 830 | 28 | 36 |
400 | 707 | 2546 | 38 | 46 |
400 | 1184 | 4262 | 42 | 51 |
400 | 1660 | 5978 | 45 | 54 |
Case-radiated noise LPA [dB] at static differential pressure Δpst 150 or 500 Pa
n.a.: The specified static differential pressure Δpst is lower than the minimum differential pressure Δpst min.
Note:
Information on case-radiated noise for combinations of basic unit and secondary silencer can be found in the Easy Product Finder design program.
Circular VAV terminal units made of PPs plastic, for variable and constant air volume systems, suitable for extract air, available in 6 nominal sizes. High control accuracy (even with upstream bend R = 1D). Ready-to-commission unit which consists of the mechanical parts and the electronic control components Each unit contains an averaging effective pressure sensor for volume flow rate measurement, and a damper blade. Factory mounted control components complete with wiring and tubing Effective pressure sensor with 3 mm measuring holes, hence resistant to contamination. Position of the damper blade indicated externally at shaft extension. The damper blade is factory set to open position, which allows a ventilation airflow even without control; this does not apply to variants with defined safe position NC (normally closed). Closed blade air leakage to EN 1751, class 3. Casing air leakage to EN 1751, class B. Meets the hygiene requirements of EN 16798, Part 3, of VDI 6022, Sheet 1, and of DIN 1946, Part 4.
Special features
Materials and surfaces
Connection
Technical data
Specification text for attachment
Air-regenerated noise
Case-radiated noise
TVRK | – | FL | / | 160 | / | GK | / | XD4 | / | V | 2 | / | 200 – 900 [m³/h] | / | NO |
| | | | | | | | | | | | | | | | | | |||||||
1 | 2 | 3 | 4 | 5 | 7 | 8 | 9 | 10 | |||||||
2 Duct connectionNo entry: spigot
FL Flanges on both ends
3 Nominal size [mm]
125160200250315400
4 AccessoriesNo entry: none
GK Matching flanges for both ends
5 Attachments (control components)
For example
XD4 Universal controller (VARYCONTROL) with static effective pressure transducer
7 Operating mode
F Constant value (one setpoint value)
V Variable (setpoint value range)
8 Signal voltage range
For the actual and setpoint value signals
0 0 – 10 V DC
2 2 – 10 V DC
9 Operating values for factory setting
Volume flow rates [m3/h or l/s]
qᵥconst. (with operating mode F)
qᵥmin – qᵥmax (with operating mode V)
10 Damper blade position
Only with spring return actuators
NO Power off to OPEN
NC Power off to CLOSE
Duct connection | Spigot |
Nominal size | 160 mm |
Attachments (control components) | VARYCONTROL Universal controller with static effective pressure transducer and safe position function with spring return actuator |
Operating mode | Variable operation |
Signal voltage range | 2 – 10 V DC |
Operating values | qvmin = 200 m³/hqvmax = 900 m³/h |
Damper blade position | NO power off to OPEN |
TVRK | – | FL | / | 160 | / | GK | / | TUNF | / | RE | / | M | / | 0 | / | UMZ | / | … | / | NC |
| | | | | | | | | | | | | | | | | | | | | | ||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | ||||||||||
Flange | both ends |
Nominal size | 125 mm |
Accessories | Without |
Attachments (control components) | TROX UNIVERSAL controller, actuator run time 150 s |
Equipment function | Extract air control |
Volume flow rate setting | Slave |
Signal voltage range | 0 – 10 V DC |
Expansion modules | With expansion module EM-TRF-USV,transformer for 230 V AC and uninterruptible power supply (UPS)With expansion module EM-AUTOZERO,solenoid valve for automatic zero point correction |
Operating values | No entry required (slave) |
TVRK | – | FL | / | 160 | / | GK | / | XF4 | / | PDE | / | F | 2 | / | 500 Pa | / | NO |
| | | | | | | | | | | | | | | | | | | | ||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||||||||
2 Duct connection
No entry: spigot
FL Flanges on both ends
3 Nominal size [mm]
125160200250315400
4 Accessories
No entry: none
GK Matching flanges for both ends
5 Attachments (control components)
For example
XF0 Compact controller for duct pressure
XF4 Universal controller for duct pressure (VARYCONTROL)
6 Equipment function/Installation location
PDS Duct pressure control, supply air
PDE Duct pressure control, extract air
PRS Room pressure control, supply air
PRE Room pressure control, extract air
7 Operating mode
F Constant value (one setpoint value)
V Variable (setpoint value range)
8 Signal voltage range
For the actual and setpoint value signals
0 0 – 10 V DC
2 2 – 10 V DC
9 Operating values for factory setting
For duct pressure control, enter the differential pressure [Pa] as an absolute value.
∆pconst. (with operating mode F)
∆pmin - ∆pmax (with operating mode V)
10 Damper blade position
Only with spring return actuators
NO Power off to OPEN
NC Power off to CLOSE
Duct connection | Spigot |
Nominal size | 315 mm |
Attachments (control components) | Compact controller, static, duct pressure control |
Equipment function/installation location | Duct pressure control, extract air |
Operating mode | Constant value control |
Signal voltage range | 0 – 10 V DC |
Operating value | ∆pconst. = 550 Pa |
TVRK | – | FL | / | 160 | / | GK | / | TUNF | / | PRE | / | MFP | / | 0 | / | UMZ | / | … | / | NC |
| | | | | | | | | | | | | | | | | | | | | | ||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | ||||||||||
Order example: TVRK/125/TUN/PDE/SVP/0/TVZ/100/350 Pa
Duct connection | Spigot |
Nominal size | 125 mm |
Attachments (control components) | TROX UNIVERSAL controller, actuator run time 150 s |
Equipment function | Duct pressure control, extract air |
Effective pressure setting | Slave, variable differential pressure control |
Signal voltage characteristics | 0 – 10 V DC |
Expansion modules | With expansion module EM-TRF, transformer for 230 V AC supply With expansion module EM-V, for volume flow rate measurement with differential pressure control With expansion module EM-AUTOZERO, solenoid valve for automatic zero point correction |
Operating values | ∆pmin = 100 Pa ∆pmax = 350 Pa |
TVRK | – | FL | / | 160 | / | GK | / | ELAB | / | S | / | RE | / | UMZ | / | LAB | / | … |
| | | | | | | | | | | | | | | | | | | | |||||||||
1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 |
3 Nominal size [mm]
125160200250315400
4 Accessories
No entry: none
GK Matching flanges both sides
5 Attachments (control components)
ELAB EASYLAB controller TCU3
6 Actuators
S Fast-running actuator (3 s)
SD Fast-running actuator (3 s), with digital communication interface (TROX HPD)
8 Equipment function
Room control
RE Extract air control (Room Exhaust)
PC Differential pressure control (Pressure Control)
9 Expansion modules
Option 1: Power supplyNo entry: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)
Option 2: Digital communication interface
No entry: none
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock
Option 3: Automatic zero point correction
No entry: none
Z EM-AUTOZERO Solenoid valve for automatic zero point correction
10 Additional functions
Without room management function
LAB Extract air led system (laboratories)
CLR Supply air led system (clean rooms)
Room management function is active
LAB-RMF Extract air led system
CLR-RMF Supply air led system
11 Operating values [m³/h or l/s, Pa]
(only required when room management function is active)
Total extract air/supply air of room:
qv1: Standard mode
qv2: Reduced operation
qv3: Increased operation
qv4: Constant supply air
qv5: Constant extract air
qv6: Supply air/extract air difference
Δpset: Setpoint pressure (only with differential pressure control)
Useful additionsRoom control panel
BE-LCD 40-character display
The differential pressure transducer required for room pressure control (equipment function) has to be ordered separately, e.g.
PT-699 Measuring range ±50 Pa or ±100 Pa
PT-GB604 Measuring range ±100 Pa
Duct connection | Flanges on both ends |
Nominal size | 160 mm |
Accessories | Matching flanges for both ends |
Attachments (control components) | EASYLAB controller TCU3 |
Actuator | Fast-running (3 s) |
Equipment function | Extract air control |
Additional function | Room management function has been deactivated Extract air led system |
Operating values | not required |
TVRK | – | FL | / | 160 | / | GK | / | ELAB | / | S | / | EC | – | E0 | / | UMZ | / | … |
| | | | | | | | | | | | | | | | | | | | |||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
2 Duct connection
No entry required: Spigot
FL Flanges on both ends
3 Nominal size [mm]
125160200250315400
4 Accessories
No entry required: None
GK Matching flanges both sides
5 Attachments (control components)
ELAB EASYLAB controller TCU3
6 Actuators
S Fast-running actuator (3 s)
SD Fast-running actuator (3 s), with digital communication interface (TROX HPD)
7 Equipment function
Single operation
EC Extract air controller
8 External volume flow rate setting
E0 Voltage signal 0 – 10 V DC
E2 Voltage signal 2 – 10 V DC
2P Switch contacts (provided by others) for 2 switching steps
3P Switch contacts (provided by others) for 3 switching steps
F Volume flow rate constant value, without signalling
9 Expansion modules
Option 1: Power supply
No entry required: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)
Option 2: Digital communication interface
No entry required: None
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock
Option 3: Automatic zero point correction
No entry required: None
Z EM-AUTOZERO Solenoid valve for automatic zero point correction
10 Operating values [m³/h or l/s]
Depending on external volume flow rate setting
E0, E2: qvmin/qvmax
2P: qv1/qv2
3P: qv1/qv2/qv3F: qvconst.
Duct connection | Spigot |
Nominal size | 200 mm |
Attachments (control components) | EASYLAB controller TCU3 |
Actuator | Fast-running actuator (3 s) |
Equipment function | Extract air controller |
External volume flow rate setting | Voltage signal 2 – 10 V DC |
Operating values | qvmin = 600 m³/hqvmax = 900 m³/h |
TVRK | – | FL | / | 160 | / | GK | / | ELAB | / | S | / | FH – VS | / | UMZS | / | 200 – 900 [m³/h] |
| | | | | | | | | | | | | | | | | | ||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
2 Duct connection
No entry: spigot
FL Flanges on both ends
3 Nominal size [mm]
125160200250315400
4 Accessories
No entry: none
GK Matching flanges both sides
5 Attachments (control components)
ELAB EASYLAB controller TCU3
6 Actuators
S Fast-running actuator (3 s)
SD Fast-running actuator (3 s), with digital communication interface (TROX HPD)
7 Equipment function
Fume cupboard control With face velocity transducer
FH-VS Face velocity control strategy
With face velocity transducer and sash distance sensor
FH-VD Optimised face velocity control strategy
With sash distance sensor
FH-DS Linear control strategy
FH-DV Safety-optimised control strategy
With switch contacts (by others) for switching steps
FH-2P Two switching steps
FH-3P Three switching steps
Without signalling
FH-F Volume flow rate constant value control
8 Expansion modules
Option 1: Supply voltage
No entry: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)
Option 2: Digital communication interface
No entry: none
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock
Option 3: Automatic zero point correction
No entry: none
Z EM-AUTOZERO Solenoid valve for automatic zero point correction
Option 4: Lighting
No entry: none
S EM-LIGHT, wired socket for the connection of lighting and for switching the lighting on/off using the control panel
(only in combination with connection EM-TRF or EM-TRF-USV)
9 Operating values [m³/h or l/s]
Depending on the equipment function
FH-VS: qvmin – qvmax
FH-VD: qvmin – qvmax
FH-DS: qvmin – qvmax
FH-DV: qvmin – qvmax
FH-2P: qv1/qv2
FH-3P: qv1/qv2 /qv3
FH-F: qv1
Useful additions
Control panel for fume cupboard controller, for displaying the functions of the control system according to EN 14175BE-SEG-** OLED display
BE-LCD 40-character display
Order example: TVRK/200/ELAB/S/FH-2P/TZ/600/1200
Duct connection | Spigot |
Nominal size | 200 mm |
Attachments (control components) | EASYLAB controller TCU3 with fast-running actuator |
Actuator | Fast-running actuator (3 s) |
Equipment function | Two switching steps |
Expansion module | With expansion module EM-TRF, transformer for 230 V AC supply With expansion module EM-AUTOZERO, solenoid valve for automatic zero point correction |
Operating values | qvmin = 600 m³/h qvmax = 1200 m³/h |
Attachments
Type Compact, static
Type Universal, dynamic
Type EASYLAB TCU3
Additional products
Type CAK
Dimensions and weights of TVRK
NG | L | ∅D | B₃ | H₃ | kg |
---|---|---|---|---|---|
125 | 394 | 125 | 195 | 145 | 4.5 |
160 | 394 | 160 | 230 | 180 | 4.8 |
200 | 394 | 200 | 270 | 220 | 5.2 |
250 | 394 | 250 | 320 | 270 | 6.4 |
315 | 594 | 315 | 385 | 335 | 8.5 |
400 | 594 | 400 | 470 | 420 | 10.7 |
Dimensions and weight of TVRK-FL
NG | L | ∅D | ∅D₁ | ∅D₂ | B₃ | H₃ | T | n | kg |
---|---|---|---|---|---|---|---|---|---|
125 | 400 | 125 | 165 | 185 | 195 | 145 | 8 | 8 | 4.7 |
160 | 400 | 160 | 200 | 230 | 230 | 180 | 8 | 8 | 5.2 |
200 | 400 | 200 | 240 | 270 | 270 | 270 | 8 | 8 | 5.7 |
250 | 400 | 250 | 290 | 320 | 320 | 270 | 8 | 12 | 7 |
315 | 600 | 315 | 350 | 395 | 385 | 335 | 10 | 12 | 9.4 |
400 | 600 | 400 | 445 | 475 | 470 | 420 | 10 | 16 | 11.9 |
Installation and commissioning
Upstream conditions
The volume flow rate accuracy Δqᵥ applies to a straight upstream section of the duct. Bends, junctions or a narrowing or widening of the duct cause turbulence that may affect measurement. Duct connections, e.g. branches off the main duct, must comply with EN 1505. Some installation situations require straight duct sections upstream.
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We are here for you
Please specify your message and type of request.
Tel.: +971 4 3417448 | Fax: +971 4 3417449
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.: +971 4 3417448 | Fax: +971 4 3417449