Air Distribution Solutions

The Multi-Direction Ceiling Diffuser (MCD)

Our Multi-Direction Ceiling Diffusers are indispensable to comprehensive air outlet systems. These diffusers are meticulously crafted, comprising of a series of uniformly flared louvres that construct an array of concentric air passages. To simplify installation, these components consist of two parts: an outer frame complete with a duct connection collar and a detachable central core.

Design & Structure

In a perfect blend of functionality and aesthetics, our Multi-Direction Ceiling Diffusers flaunt a unique design characterised by concentric air passages and a striking geometric pattern. This enables them to seamlessly integrate into any contemporary or traditional ceiling system. In addition to enhancing the overall aesthetic appeal, these diffusers are equipped with a variable volume control device that allows for versatile air volume adjustments.

Crafted from Galvanised Steel and Aluminium, our ADF Multi-Direction Ceiling Diffusers are available in both square and rectangular designs. They come finished in either baked enamel or natural anodised aluminium for a polished look.

Features

Our Multi-Direction Ceiling Diffusers are engineered to offer:

• Superior air entrainment
• Efficient diffusion of high volumes of air
• Rapid temperature equalisation
• Uniform air distribution
• Consistent air throw pattern
• Removable central core for effortless maintenance
• Front-accessible volume control device for easy adjustments

Applications

These diffusers are a perfect fit for a broad spectrum of settings, including but not limited to:

• Corporate and industrial buildings
• Hotels and motels
• Shopping malls and supermarkets
• Restaurants and cafeterias
• Hospitals and medical centres
• Various other public areas

Adjustable Slot Linear Diffuser (ALD)

Light Troffer Diffuser (LTD)

ADF’s Light Troffer Diffusers, identified by model name LTD, have been meticulously designed to deliver exceptional air distribution while maintaining minimal sound levels when integrated with compatible air-handling light fixtures. These products can be factory-customized to align with varying slot configurations inherent to different light fixtures.

All our diffuser models are available as double-sided saddle type units, and clients have the option of selecting either round top inlets or oval side inlets, thereby ensuring compatibility with a broad range of applications. Trust in the precision engineering of ADF’s Light Troffer Diffusers for effective, noise-controlled air distribution solutions.

Perforated Ceiling Diffusers

Perforated ceiling diffusers are engineered to satisfy architectural requirements for air outlets that seamlessly blend with perforated ceilings or other contemporary ceiling designs.

Design & Construction

ADF’s Perforated Ceiling Diffusers showcase a perforated facade, offering an open area of 50%, a feature that determines their capacity and overall performance. Predominantly used as return air diffusers, these versatile products can alternatively serve as supply air outlets. Their high air entrainment capacity enables the diffusion of large volumes of air efficiently.

Standard units, designed without any deflection device, are optimised for low-capacity applications, discharging a minimal volume of air at low velocities. For high-capacity applications, units come equipped with a specified deflection device to generate a horizontal air throw pattern. It is recommended that systems using this range of products are specifically designed to ensure satisfactory performance.

Features

Our Perforated Ceiling Diffusers offer the following features:

• Versatility in applications: appropriate for supply, return, or transfer air.
• Ideal for laminar flow and air displacement ventilation.
• High air entrainment capacity.
• Fabricated from Galvanised Steel or Aluminium and finished with baked enamel or natural anodised aluminium.
• A broad array of deflection devices for optimal air throw performance.

Applications

These diffusers find extensive applicability in:

• Perforated ceiling systems
• Office buildings
• Hospitals and medical centres
• Laboratories and clean rooms
• Schools and libraries
• Lavatories and restrooms, and more

Laminar Flow Unit

Our exclusive range of Laminar Flow Units, referred to as LFU LFF, is specifically engineered with optional removable HEPA filters and a perforated-faced plenum mounting system. This setup ensures a clean supply of air at low velocities to the designated work area, thereby eliminating the risk of contaminant mixing. The unit’s efficiency in air displacement is further enhanced by an exhaust air system positioned at a low level.

For ease of maintenance and filter replacement, the unit’s front panel can be detached. Available in either aluminium or stainless steel construction, this product proves particularly useful in environments that demand high levels of cleanliness and controlled air flows, such as:

• Operating rooms
• Clean rooms
• Semiconductor production facilities
• Pharmaceutical manufacturing areas
• Biotech labs
• Food processing plants
• Laboratories
• Veterinary clinics

We also offer custom designs and constructions to cater to the unique requirements of various projects. For more details, please get in touch with our sales representatives. Experience superior air quality control with our LFU LFF Laminar Flow Units.

Round Diffuser

ADF Round Diffusers exude a classic round cone ceiling style, combining aesthetic appeal, simplicity, and effectiveness all in one solution.

Design & Construction

ADF Round Diffusers are designed with a slot and lock arrangement for swift and effortless removal of the central cone assembly. While these diffusers offer a shorter air throw, they enable rapid room temperature equalisation due to their 360° even air distribution.

Fabricated from aluminium and finished with baked enamel, ADF Round Diffusers are popularly used in diverse settings such as shopping malls, arenas, convention centres, warehouses, and factories.

Features

Our Round Diffusers provide:

• A timeless yet visually pleasing appearance.
• A removable centre cone for front adjustment of the volume control device.
• Simple flush mounting or free-hung installation.
• Even air distribution.
• Rapid room temperature equalisation.
• Suitability for ceiling supply and extract air installation.

These units are available in standard neck sizes of 150 mm, 200 mm, 250 mm, 300 mm, 350 mm, 400 mm, and 450 mm in diameter. Experience the seamless blend of design and performance with our RAD Round Diffusers.

Jet Diffuser

ADF Jet Diffusers have been specifically engineered to supply high velocity and large volumes of air to spaces with high ceilings.

Design & Construction

ADF Jet Diffusers are characterised by their circular form and a unique dual-concentric cone structure at the centre, which facilitates the jet throw discharge of conditioned air. The central cones are pivotally connected at their neck openings, allowing easy adjustment by angling them to desired degrees for targeted air throw direction.

Fabricated from Galvanised Steel and finished with baked enamel, ADF Jet Diffusers are frequently used in venues such as theatres, sports centres or stadiums, entertainment stages, and various industrial applications requiring spot cooling.

Features

Our Jet Diffusers offer:

— An adjustable centre core capable of 45° deflection for directing air throw as desired.

— Suitability for high-velocity spot cooling.

— A straightforward connection and mounting system.

— The flexibility of single or multiple unit installation.

— Ideal performance in high-ceiling spaces.

ADF Ball Jet Diffuser

The ADF Ball Jet Diffuser stands out for its exceptional performance, low noise rating, and minimal pressure drop, thanks to its structural design, rooted in the principles of airflow dynamics.

A defining feature of the Ball Jet Diffuser is its nozzle or spout-type outlet, which projects high air volume over long distances, making it perfect for high-ceiling headroom applications. The diffuser’s outlet, functioning akin to an eyeball, can be regulated a full 360° at a 30° deflection angle, ensuring precise air direction control.

Constructed from aluminium and finished with baked enamel, this product range is aesthetically pleasing and favoured by architects. It is optimally suited for ensuring predictable directional control of conditioned air in spacious environments such as shopping malls, convention halls, airport terminals, theatres, museums, sports arenas, and atriums, among others.

Features

Our Ball Jet Diffusers offer:

— A superior functional and aesthetic design that harmonises with all interiors.

— Targeted long-distance air throw capabilities.

— An adjustable outlet that provides full control over air throw directions.

— Low noise rating and pressure loss.

— Ideal effectiveness for spot cooling.

ADF Swirl Diffuser

Design & Construction

ADF Swirl Diffusers are comprised of a one-piece square diffuser featuring fixed radial-twisted vanes and an air plenum box. Their distinctive design not only complements both modern and traditional ceiling systems, but also creates a high induction swirling motion upon air discharge. This unique design feature enables rapid temperature equalisation, promoting stable room conditions.

Each Swirl Diffuser, complete with a plenum box, is constructed from Galvanised Steel and finished with baked enamel. They are available in a standard size of 600 mm x 600 mm. The plenum box is directly affixed to the facial diffuser and can accommodate both top and side air inlet connections.

Features

Our Swirl Diffusers offer:

• High induction swirling air discharge for enhanced air change rates.
• Compatibility with supply air temperature differentials of up to +/-10 K.
• Suitability for ceiling heights ranging from 2.7 m to 4.0 m.
• An aesthetically pleasing facial design for office ceiling installations.
• A detachable face diffuser with a centre fixed screw.
• Availability in one air outlet size: 535 mm Ø (21″ Ø).

Applications and Installation

Our Swirl Diffusers can be either flush ceiling mounted or free-hung using the pre-fabricated suspension brackets. They are commonly employed in various environments including:

• Office buildings
• Hotels and motels
• Shopping malls
• Restaurants and cafeterias
• Hospitals and medical centres
• Universities and schools
• Other public areas

Raised Floor Diffusers

Raised Floor Diffusers are distinguished for their elite design and specialised applications within the realm of air distribution outlets. These diffusers, with their unique concentric circular slots, offer aesthetic elegance and versatile functionality in all raised floor applications.

Exhibiting high mechanical rigidity and tensile strength, these striking floor diffusers seamlessly integrate with raised floor systems. They facilitate conditioned air delivery to the raised floor space and subsequently distribute it throughout the room.

The ADF Raised Floor Diffuser (RFD) features an aluminium faceplate and casing, complemented by a plastic radial swirl device, and a height-adjustable rod serving as an axle for the hung-down dirt basket.

Features

Our Raised Floor Diffusers offer:

• Compatibility with all types of raised floor systems.
• High resilience to traffic loads.
• Manual adjustment of the swirl device to project desired vertical/horizontal airflow discharge.
• Easy and versatile installation.
• Adjustable hanging distance of the dirt basket to facilitate effective airflow and enable quick, easy cleaning.

Standard Construction

The Raised Floor Diffuser comprises:

• A faceplate made of Aluminium.
• A swirl device crafted from Flame-retardant Polyamide.
• A dirt basket made of Flame-retardant ABS Plastic.
• An adjustable axle consisting of a Galvanised Steel Rod.

Supply Air Grille

ADF Supply Air Grilles, carefully chosen, operate efficiently from high sidewall locations or from peripheral locations at the sill and curb to meet diverse design requirements.

Design & Construction

Single Deflection Supply Air Grilles feature a larger free area and comprise one set of vanes in either a horizontal or vertical orientation. These grilles offer air control adjustable in a single plane.

Double Deflection Supply Air Grilles comprise two sets of adjustable vanes oriented perpendicularly to each other, enabling the control of directional air in both horizontal and vertical planes.

Built from Galvanised Steel or Aluminium and finished with oven-baked enamel or natural anodised finish, ADF Supply Air Grilles offer a broad range of sizes and auxiliary components. This flexibility enhances their performance, enabling them to meet diverse design requirements.

Application

ADF Supply Air Grilles are suitable for all supply air outlet applications, with or without a ceiling. Sidewall installations are recommended to be positioned within 600 mm below the ceiling.

Return Air Grille

ADF Return Air Grilles are purposefully designed and constructed to accommodate a broad spectrum of applications. Typically installed on internal walls or partitions, ceilings, and duct systems, they serve a vital role in air extraction.

Design & Construction

Our Return Air Grilles feature a fixed blade-type design where the blade angle is set at 45°. These grilles also offer a sight-proof feature, ensuring not only superior airflow and pressure drop performance but also a minimal noise rating. The grille frame incorporates an external flange border for enhanced durability.

These grilles can be constructed from Galvanised Steel or Aluminium and finished with baked enamel or natural anodizing.

Features

ADF Return Air Grilles offer:

— A clean, neat, and pleasing appearance that meets design requirements.

— A Galvanised Steel construction offering strength and rigidity, while the durability and lightweight properties of the aluminium construction provide additional benefits.

— A minimum 45° blade angle design that ensures visual privacy.

— Availability in horizontally aligned or continuous line construction to enhance and complement architectural designs.

Egg-Crate Return Air Grille

Different design requirements and specifications call for the application of varied types of air grilles. Among these, the Egg-crate Return Air Grilles are renowned for their vast free area and extremely low pressure loss.

Design & Construction

ADF’s Egg-crate Return Air Grille combines a smart, clean appearance with sturdy construction. The design features an outer frame of standard width and an inner hollow core with a 20 mm x 20 mm x 20 mm crate pattern. This grille can be constructed from Galvanised Steel or Aluminium. Alternatively, we also offer a plastic centre core construction with a 12.5 mm x 12.5 mm x 12.5 mm crate pattern.

Features

The ADF Egg-crate Return Air Grille offers:

• An expansive free area for airflow, reducing pressure loss.
• Options for the centre hollow crate made from Galvanised Steel, Aluminium, or Plastic.
• A smart, clean appearance that seamlessly integrates with modern interiors and ceiling designs.
• Versatility in application, suitable for ceiling and sidewall extract or return air system installations.

ADF Linear Bar Grille

ADF understands that each project comes with unique requirements and design considerations. Thus, we offer grilles that function optimally in various positions such as high sidewalls, sills, curbs, or floors. Our Linear Bar Grilles, well-regarded for their sturdy construction, neat appearance, and efficient air delivery, are often the go-to choice for such applications.

Design & Construction

ADF’s Linear Bar Grilles are available in two primary designs: Heavy Duty Extruded Aluminium with mandrel tubes and solid flat bars, and High-Quality Aluminium with fixed bars for a linear, clean aesthetic. All flat bars are set at a 0° deflection, with or without a frame, offering versatility in application. These grilles are aptly suited for supply and extract air systems, commonly found in computer rooms and raised-floor office environments.

Features

ADF’s Linear Bar Grilles provide:

• A neat, crisp, and sophisticated appearance tailored to meet design requirements.
• Efficient air distribution, optimizing indoor air quality and comfort.
• Heavy-duty, robust construction featuring reinforced round tubes, offering longevity and durability.
• Suitability for high traffic areas, especially in raised-floor installations.
• Choice of finishes: natural anodised or oven-baked paint for enhanced aesthetics.

Choose ADF’s Linear Bar Grilles for a solution that combines strength, efficiency, and elegance.

Air Louvres

In contemporary architecture, air louvres play a crucial role. Their fundamental purpose is to allow air to enter or exit a building. Typically, they are installed in internal or external wall openings, roof penthouses, and ductwork.

ADF offers two types of louvres: Indoor and Outdoor air louvres. These are commonly utilized in curtain wall systems or interior partition applications. They are also frequently used for fresh air intake or exhaust in conjunction with air conditioning equipment or within any mechanical and electrical plant rooms.

Design & Construction

ADF provides various depths of indoor and outdoor air louvres to serve specific architectural purposes and accommodate different wall thicknesses. The blade angles of outdoor louvres are positioned at a 45° angle, offering visual protection while maintaining optimal air flow, pressure drop, water penetration performance, and weatherproofing. The louvre frames are of an external flange type, designed to overlap the wall opening and prevent leakage between the louvre and the adjacent wall construction.

All ADF air louvres can be constructed of Galvanised Steel or Extruded Aluminium, and are finished with either a natural anodised or baked enamel coating.

Features

ADF Air Louvres offer:

• A neat, clean, and pleasing aesthetic, designed to meet the demands of modern architectural tastes.
• Strength and rigidity from Galvanised Steel construction, with the additional benefits of durability and lightness from aluminium construction.
• Top-end angled traps on louvre blades, designed to prevent rain or water penetration, with straight vane bottoms for easy water drainage.
• A minimum 45° blade angle designed for visual protection.
• Availability in vertical, horizontal aligned, or continuous line construction, to enhance and complement architectural features.

Choose ADF air louvres for a balance of architectural aesthetics and functionality.

Air Damper

Air dampers are essential components in a HVAC system, particularly when there is a need to control or balance the three critical functional elements – air flow, temperature, and pressure.

Design & Construction

ADF air dampers are constructed from heavy gauge, corrosion-resistant Aluminium or Galvanised Steel. The design optimizes air flow efficiency with the integration of a flanged frame and vee-blades. Blade rotations can be selected from single, parallel, or opposed modes, and are available in both circular and rectangular shapes.

Applications

ADF’s range of dampers are designed based on the following general applications:

1. Volume Control: These dampers are used to regulate the air flow at specific locations in a duct system. These dampers are typically controlled manually or by an electric actuator.

2. Temperature Control: Constructed similarly to Volume Control Dampers, these dampers control two air streams of varying temperatures to achieve a specific temperature requirement. They typically function in pairs, linked together in a face-and-bypass or multizone-mixing arrangement.

3. Pressure Control: This application typically utilizes backdraft or auto-shut dampers. Pressure Relief Dampers are employed to control the pressure at a specific location in a duct system or a specific space.

ADF’s air dampers provide an effective solution for regulating the functional elements of your HVAC system, ensuring optimal performance and comfort.

Fire Damper

The selection and installation of Fire Dampers are necessitated by building codes to ensure safety and fire protection in alignment with the specified fire resistance rating of 1.5 to 3 hours or more. Fire Dampers operate automatically upon detection of heat by the melting of a fusible link, effectively sealing the opening to halt the spread of fire and smoke.

Models: DFD-RL / DFD-RC / DFD-SP

The dynamic or static rated Fire Damper is a high-performance, low-leakage damper. It boasts both an air flow velocity rating and a pressure differential rating, reaching up to 15 m/s and 2000 Pa, respectively. Samples of ADF DFD Fire Dampers have been tested and certified by accredited laboratories, including NATA Australia, SIRIM Malaysia, and TÜV SÜD PSB, Singapore.

The ADF DFD-RL, a Louvred type, and DFD-RC, a Curtain type Fire Damper, both function to maintain operation or completely shutdown during fire mode. The key difference between these two models lies in their blade design, which influences the free area of air flow.

The ADF DFD-SP, with its compact construction and fully sealed features, is specifically designed for fire-smoke protection with extremely low leakage. It is typically motorised and operated with an electric or pneumatic actuator, and controlled by smoke or fire alarms integrated within the building automation system. This ensures prompt response and enhanced fire protection.

Variable Air Volume Control System

The management of air temperature in a given space requires a method to offset varying space loads. In an air conditioning system, this balancing act is achieved by introducing air into the space at a specific temperature and volume. Given that space loads are subject to constant fluctuation, the compensatory measures to counterbalance these loads must adapt correspondingly. Adjusting either the air temperature, the air volume, or a combination of the two in a controlled manner, allows for the appropriate offsetting of the space load as needed.

A meticulously designed Variable Air Volume (VAV) terminal unit offers the ability to modify the air volume introduced into a room. In certain scenarios, it also permits variation of the temperature within the room. This enables the achievement of desired comfort levels, thus promoting an optimal indoor environment.

Variable Air Volume (VAV) System

The AVB and AVD systems can be paired with a Direct Digital Controller (DDC) system that is compliant with both LonMark® and BACnet®. This system is designed to communicate on the LonTalk® and BACnet® MSTP open system via a twisted pair network. Specifically, it serves as an application-specific digital controller for pressure-independent Variable Air Volume (VAV) terminal boxes.

The DDC system contains a differential pressure pitot-tube sensor, which allows the onboard differential pressure transducer to measure the rate of airflow. Furthermore, the temperature set-point adjustment and space temperature values can be inputted through a wall-mounted thermostat.

Inputs:

1. An onboard pressure transducer
2. A 10k ohm thermistor point for zone temperature control
3. A digital point for an occupancy sensor
4. An analog point for either an air quality sensor, a time extension sensor, or a smoke sensor

Outputs:

1. Two 24 VAC Triac Outputs for integrated damper control
2. Three 24 VAC Triac Outputs for electric reheat
3. One 24 VAC Triac Output for serial/parallel fan control

This VAV System and DDC integration offer an advanced solution for robust and efficient climate control.

Rectangular Absorptive Silencers

Our ACF Rectangular Absorptive Silencers (ARAS) are engineered for superior performance, ensuring efficient sound absorption and minimized pressure losses. These silencers are constructed using a galvanized steel exterior duct housing, which contains a series of round-ended splitters forming the air passage.

The splitters are internally filled with highly effective sound-absorbent materials, then lined with a perforated galvanized sheet for enhanced sound suppression. For seamless connection to supply and/or extraction rectangular ductwork systems, these silencers are outfitted with 50 mm flanges at both the inlet and outlet openings.

Features:

— Robust construction with heavy-gauge, hot-dip galvanized steel casing.

— Round-ended splitters ensure aerodynamic airflow.

— Exceptional sound suppression for a quiet operational environment.

— Low pressure losses for energy-efficient operation.

— An economical solution for effective noise attenuation.

— Multiple units can function as one in an arrangement for added flexibility and efficiency.

Tubular Absorptive Silencers
(ATAS/ PATAS)

ADF’s Tubular Absorptive Silencers, both ATAS and PATAS series, boast rigid construction with an outer tubular galvanized steel casing. The inner lining is comprised of effective sound absorbent material coupled with a perforated galvanized sheet that forms an internal tubular air passage.

Specifically, our PATAS series is uniquely equipped with a concentric pod, firmly bracketed within the tubular air passage. This central pod is composed of the same acoustic material, deliberately integrated to enhance attenuation performance.

Designed for practicality, this range of silencers features specialized flanges, facilitating easy and direct connection to fan units or ductwork.

Features:

1. Excellent sound suppression for quieter operation.
2. Low pressure losses ensuring energy efficiency.
3. Simple connection to fans or ductwork for ease of installation.
4. Well-suited for high-pressure fan or duct systems, enhancing versatility.