ATEX Air Diffuser in Oman | ATEX Air Diffuser Supplier in Oman

The ATEX Long Throw Nozzle WDA provides powerful long-distance air distribution for large industrial halls, theatres, production areas, process buildings, and hazardous-area HVAC systems. Companies searching for an ATEX Air Diffuser in Oman can use the WDAEX where the ventilation system needs high outlet velocity, long throw distance, low sound levels, and controlled horizontal or vertical air distribution.

The long-throw nozzle uses a conical outlet geometry that creates a concentrated air jet. This design allows the WDA to deliver conditioned air over much greater distances than a standard ceiling diffuser. As a result, engineers can position the nozzles along walls or ceilings while still reaching large occupied areas.

The standard WDA range supports approximately 40–10,000 m³/h, while the ATEX WDAEX documentation covers around 20–8,000 m³/h. It can support cooling with a temperature difference up to approximately −14 K and heating up to approximately +25 K.

For hazardous locations, the WDAEX supports Zones 1 and 2 for gases and Zones 21 and 22 for combustible dusts. The certified ATEX markings are II 2G Ex h IIB Gb and II 2D Ex h IIIC Db.

Atex Hub supplies ATEX Air Diffusers across Muscat, Sohar, Salalah, Duqm, Nizwa, Sur, and throughout Oman. We also support projects across the UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, Europe, Africa, and worldwide.

What Is the ATEX Long Throw Nozzle WDA?

The ATEX Long Throw Nozzle WDA is a high-velocity air terminal designed to project conditioned supply air over long distances.

Unlike a conventional ceiling diffuser that spreads air across a nearby area, the WDA creates a focused jet with deeper penetration.

This makes it particularly useful in:

• Large industrial halls: Carries conditioned air across wide production and warehouse spaces where standard diffusers may not provide sufficient throw.
• High-ceiling buildings: Delivers air from wall or ceiling locations toward the occupied zone without installing large numbers of terminals.
• Heating and cooling systems: Supports both warm and cool supply air through adjustable horizontal or vertical throw patterns.
• Hazardous-area HVAC: The WDAEX configuration supports classified gas and dust environments when engineers follow the specified ATEX installation and grounding requirements.

Key Features of the ATEX Air Diffuser

The ATEX Air Diffuser in Oman combines long throw, high airflow, adjustable direction, and certified hazardous-area suitability.

• ATEX Zone 1, 2, 21 and 22 compatibility: The WDAEX supports hazardous gas and dust environments with markings II 2G Ex h IIB Gb and II 2D Ex h IIIC Db.
• Long-distance air throw: The conical nozzle shape creates high outlet velocity with relatively low sound power, allowing conditioned air to reach deeper into large rooms.
• Wide airflow range: Standard WDA versions handle approximately 40–10,000 m³/h, while ATEX WDAEX technical data covers approximately 20–8,000 m³/h.
• Heating and cooling operation: The nozzle supports cooling up to approximately Δt −14 K and heating up to approximately Δt +25 K, making it suitable for seasonal HVAC operation.
• Manual or motorised adjustment: Wall-mounted versions with swivel heads can move by approximately 20–30°, allowing the system to redirect the air jet according to room conditions.
• Wall or ceiling installation: Different mounting options support spiral ducts, flexible hose connections, duct installations, and wall or ceiling arrangements.

How Does the WDA Long Throw Nozzle Work?

The WDA creates a focused high-speed air jet.

A typical supply-air sequence works as follows:

1. Conditioned air travels through the HVAC duct system.
2. Air enters the WDA connection section.
3. The conical nozzle accelerates the air toward the outlet.
4. A focused jet leaves the nozzle at relatively high velocity.
5. The air travels across the room.
6. Surrounding room air mixes gradually into the jet.
7. Velocity and temperature difference reduce as the throw distance increases.
8. The conditioned air eventually reaches the occupied zone.

This operating principle allows one nozzle to cover a larger area than many conventional diffusers.

Long Throw Air Distribution

The WDA provides deep air penetration because of its concentrated discharge pattern.

Long-throw distribution offers several advantages:

• Fewer air terminals: One properly selected nozzle can cover a larger room area.
• Better high-level installation: Wall or ceiling mounting allows engineers to keep HVAC terminals away from process equipment and occupied spaces.
• Strong room mixing: High initial velocity increases induction and encourages surrounding room air to mix with the supply jet.
• Flexible throw control: Adjustable swivel heads allow technicians to redirect airflow after installation.

This design works particularly well in large industrial buildings and production halls.

Cooling Operation

The WDA supports cooling with supply-air temperature differences up to approximately −14 K.

During cooling:

• The nozzle can direct air horizontally across the room.
• High initial velocity helps prevent the cold jet from dropping too quickly.
• Room air mixes with the supply jet as it travels.
• Temperature difference reduces before the air reaches occupants.

Correct cooling selection remains important because a nozzle designed only for heating can produce draughts during cooling.

Heating Operation

The WDA can also operate with heating temperature differences up to approximately +25 K.

Warm air naturally rises, so heating applications often require stronger downward penetration.

The nozzle can support this through:

• Vertical or angled discharge.
• High initial jet velocity.
• Adjustable swivel-head positioning.
• Optional motorised control.

This helps warm air reach lower occupied zones in large halls.

Swivel Head Adjustment

Selected WDA models include a swivel head.

The swivel arrangement allows the nozzle to move approximately 20–30°.

This adjustment can be:

• Manual: Technicians set the nozzle angle directly.
• Motorised: An actuator changes the nozzle direction automatically according to HVAC requirements.

The swivel mechanism helps engineers change between heating and cooling throw patterns or adapt airflow after changes to room layout.

Optional Swirl Disc

A swirl disc can shorten the effective jet throw where the installation does not require maximum penetration.

The swirl disc:

• Spreads the air jet.
• Increases induction.
• Reduces end velocity more quickly.
• Lowers the remaining temperature difference.
• Helps with vertical ceiling discharge.

This option becomes useful where a concentrated jet would otherwise travel too far.

WDAEX ATEX Hazardous Area Classification

The ATEX version carries certified hazardous-area markings.

The WDAEX also supports use with gas environments within its approved IIB classification.

Grounding and Equipotential Bonding

ATEX installation requires reliable electrical bonding.

The WDAEX must connect conductively to the ventilation duct network and the local equipotential-bonding system.

Installation teams should therefore:

• Connect the grounding point: Link the nozzle to the plant earth network.
• Maintain conductive duct continuity: Ensure metal duct sections and nozzle connections remain electrically bonded.
• Avoid excessive static buildup: Clean coated surfaces with suitable methods and avoid processes that generate high electrostatic loads.
• Inspect grounding regularly: Check the grounding connection for tightness and electrical continuity during maintenance.

Proper grounding helps reduce ignition hazards from static discharge.

Available WDA Installation Types

The WDA family supports several installation arrangements.

This wide selection helps engineers integrate the nozzle into both new and existing HVAC systems.

Spiral Duct Installation

The WDA-W configuration can connect directly to suitable spiral duct systems.

For ATEX WDAEX installations, technicians should avoid stressing or deforming the nozzle connection.

The spiral duct should remain round and properly aligned so that:

• The nozzle does not distort.
• The swivel mechanism moves freely.
• Grounding continuity remains reliable.
• Airflow remains predictable.

For size 400, the connection spigot requires on-site installation according to the ATEX technical instructions.

Applications of the Hazardous Area Air Diffuser

The Hazardous Area Air Diffuser supports large-volume and long-throw HVAC applications.

• Oil and gas facilities: Supplies conditioned air across workshops, technical buildings, utility areas, machinery spaces, and process-support zones.
• Petrochemical plants: Provides long-distance air distribution across large production and technical spaces.
• Chemical facilities: Supports suitable supply-air applications where hazardous-area classification requires ATEX-compatible HVAC terminals.
• Industrial production halls: Delivers heating or cooling air over long distances from walls or ceilings.
• Warehouses: Helps distribute air across large open areas with fewer supply terminals.
• Theatres and concert halls: Provides long throw with comparatively low sound levels for large occupied spaces.
• Sports and event halls: Supports high-volume air distribution from elevated mounting positions.

Technical Specifications of the ATEX Long Throw Nozzle WDA

Selection, Installation and Maintenance

Correct selection helps the WDA provide reliable air throw and maintain hazardous-area safety.

• Calculate the required throw distance: Match nozzle size and airflow to hall dimensions, mounting position, occupied-zone location, and required terminal velocity.
• Choose heating or cooling conditions: Consider supply-air temperature difference because heating and cooling jets behave differently.
• Select the correct installation type: Choose wall, ceiling, spiral duct, flexible hose, or duct mounting according to the HVAC layout.
• Confirm ATEX classification: Use the WDAEX only in hazardous zones covered by its certified marking.
• Maintain grounding: Connect the nozzle permanently to the local equipotential-bonding system and verify conductive continuity.
• Keep dust deposits under control: Inspect and clean the nozzle regularly, especially in dust hazardous areas.
• Check swivel movement: Ensure manually or motor-driven swivel heads move freely and retain the selected angle.
• Inspect fixings: Check supports, duct connections, grounding points, and actuator components during scheduled maintenance.

Certifications, Standards and Compliance

The WDAEX supports important hazardous-area and HVAC requirements.

• ATEX Directive 2014/34/EU: Covers equipment and protective systems intended for potentially explosive atmospheres. The WDAEX carries II 2G Ex h IIB Gb and II 2D Ex h IIIC Db markings.
• DIN EN 16798 – Ventilation for Buildings: Covers energy performance and ventilation requirements for non-residential buildings and forms part of the WDAEX technical testing framework.
• IEC 60079 Series – Explosive Atmospheres: Provides widely used requirements and guidance for equipment and installations in hazardous gas and dust environments.
• ISO 9001 – Quality Management: Supports quality-management procedures used in manufacturing and production control.

Why Choose Atex Hub for ATEX Air Diffusers?

Atex Hub supplies ATEX Air Diffusers and long-throw air terminals for hazardous HVAC, industrial climate control, high-ceiling spaces, and large-volume ventilation projects.

• Supply across Oman: Atex Hub supplies ATEX Air Diffuser in Muscat, Sohar, Salalah, Duqm, Nizwa, Sur, and industrial locations throughout Oman.
• Certified hazardous-area solutions: We support gas and dust classified HVAC applications using suitable ATEX air terminals, diffusers, nozzles, and accessories.
• Long-distance air distribution: High-velocity nozzle systems help move conditioned air across large industrial halls and high-ceiling spaces.
• Heating and cooling flexibility: Horizontal, vertical, manual, and motorised throw options allow the system to adapt to seasonal conditions.
• Complete hazardous HVAC integration: Atex Hub supplies ATEX fans, AHUs, dampers, ducting, filters, air diffusers, sensors, actuators, and control systems.
• Worldwide project coverage: We support projects throughout Oman, UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, Europe, Africa, and worldwide.

Frequently Asked Questions

1. What is the ATEX Long Throw Nozzle WDA?

The WDAEX is an ATEX-certified long-throw supply-air nozzle designed to deliver conditioned air over large distances.

2. Can I use it as an ATEX Air Diffuser in Oman?

Yes. The WDAEX supports certified hazardous-area installations in Zones 1, 2, 21 and 22 when engineers follow the approved ATEX conditions.

3. What is the gas ATEX marking?

The gas marking is II 2G Ex h IIB Gb.

4. What is the dust ATEX marking?

The dust marking is II 2D Ex h IIIC Db.

5. What airflow range does the ATEX version support?

The WDAEX supports approximately 20 to 8,000 m³/h.

6. Can the WDA provide heating and cooling?

Yes. It supports cooling up to approximately Δt −14 K and heating up to approximately Δt +25 K.

7. Can the nozzle direction be adjusted?

Yes. Swivel-head versions can move approximately 20–30° manually or by motor.

8. Can the WDA connect to spiral ducting?

Yes. The WDA-W configuration supports spiral duct connection.

9. Does the ATEX version require grounding?

Yes. The WDAEX must connect to the equipotential-bonding and grounding system.

10. Can Atex Hub supply the complete long-throw HVAC system?

Yes. Atex Hub supplies ATEX long-throw nozzles, ducting, fans, AHUs, dampers, filters, actuators, controls, and related hazardous-area HVAC equipment.

Conclusion

The ATEX Long Throw Nozzle WDA provides powerful and controlled air distribution for large rooms, industrial halls, and hazardous-area HVAC systems.

Its conical nozzle geometry creates high outlet velocity while maintaining comparatively low sound levels. This allows the WDA to achieve long throw distances in both heating and cooling applications.

The standard WDA family supports approximately 40–10,000 m³/h, while the certified WDAEX covers approximately 20–8,000 m³/h and operates in ambient conditions around 0–60°C. It supports Zones 1, 2, 21 and 22 with markings II 2G Ex h IIB Gb and II 2D Ex h IIIC Db.

For companies searching for an ATEX Air Diffuser in Oman, the WDA supports oil and gas facilities, petrochemical plants, chemical industries, production halls, warehouses, theatres, event spaces, and high-ceiling industrial HVAC applications.

Atex Hub supplies ATEX Air Diffusers throughout Oman, the GCC, Europe, Africa, and worldwide.