Laminar Pte Ltd Singapore

Laminar Pte Ltd


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damper valves


The air flow in any system is a critical component that needs to be managed efficiently. Dampers are devices used for controlling the flow of air in systems such as HVAC (Heating, Ventilating, and Air Conditioning) and heavy industrial setups.

Depending on the application, different dampers are available: manual dampers, automatic dampers, HVAC dampers, duct dampers, etc. This help creates a balanced airflow system to achieve more energy efficiency and greater safety control.

Manual dampers are opened or closed by hand with a lever or knobs and can close off one area while allowing air to flow through another section. This type of damper is often used in commercial kitchen ventilation systems. On the other hand, automatic dampers open and close without manual intervention and are usually used in ventilation systems such as air conditioning systems.

These dampers open and close based on temperature and pressure readings taken from the building’s climate control system. An HVAC or duct damper regulates airflow by controlling the air allowed to pass through a section of ducting or HVAC equipment. They can be used for supply and exhaust systems, aiding in maintaining the right temperature balance throughout the ducts.
Laminar offers a range of high-quality dampers for various applications, such as marine, cooling systems, and clean rooms in semiconductor factories and fabs. Our products are designed to meet stringent safety and performance requirements, ensuring optimal airflow control in all systems.

Our dampers for cleanroom applications are field tested extensively; it continuously bleeds off excessive internal air pressure to maintain a balanced positive air pressure. It automatically vents any sudden surge of incoming gas to protect against accidental negative pressure by functioning as a check valve.

Consequently, it can ensure that neither polluted air nor contaminants will enter the clean area in the event of sudden negative pressure.

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Butterfly Dampers

Laminar’s butterfly dampers provide a simple, cost-effective duct control and isolation method with various sealing options.
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Guillotine Dampers

Laminar’s guillotine dampers provide a high degree of versatility and effectively serve any application where routine maintenance or modification.
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Louvre Dampers

Louvre dampers (also spelt as louver) play a crucial role in regulating the flow of air and managing pressure drop in various applications.


The types of dampers used in HVAC depend on their purpose. They serve important roles in maintaining a comfortable indoor environment while optimising energy efficiency and safety in buildings, such as:

  • Air control dampers: Primarily responsible for adjusting and balancing airflow in various sections of an HVAC system. By allowing precise control over the amount of air entering different zones or rooms, they help maintain a comfortable indoor environment while optimising energy efficiency.
  • Guillotine dampers: Where quick isolations are needed, they are best known for their sealability—for instance, quick prevention of the spread of fire by denying air.
  • Volume control dampers: These dampers regulate the volume or amount of air flowing through ductwork within an HVAC system. They ensure each area receives its required airflow based on specific needs such as ventilation or temperature control.
  • Fire-smoke dampers: Fire-smoke dampers are crucial for fire safety in buildings. They automatically close when high temperatures or smoke are detected in HVAC air ducts. This prevents toxic gases and flames from spreading through the ductwork, protecting occupants and minimising property damage.

Similarly, smoke dampers serve a vital function by preventing smoke from spreading throughout a building during fire incidents. They work alongside smoke control systems to ensure that smoke is contained within designated areas until evacuation occurs safely.

  • Backdraft dampers prevent unwanted airflow reversal in ventilation systems caused by wind pressure or pressure differences between rooms with varying temperatures or pressures. Backdraft dampers ensure the ventilation system remains balanced by effectively blocking reverse airflow when unnecessary.
  • Louvers are used on air intakes or exhausts where protection from water infiltration is crucial. It consists of fixed blades that do not close, so a combination of damper and louvre is typically recommended if the application requires air shutoff.

Dampers are essential components in any HVAC system, providing a crucial in ensuring optimal airflow and energy efficiency while protecting occupants from potential fire risks.

The purpose of an HVAC damper is to regulate airflow through various sections of the ducts by automatically opening or closing as needed. This helps maintain a comfortable indoor environment while optimising energy use and preventing fires from spreading throughout buildings.

Dampers also enable precise control over air entering different rooms, zones or areas within a building, allowing for improved temperature regulation based on specific needs.
Ultimately, dampers help ensure that buildings remain safe and comfortable for occupants while helping to lower energy bills.


An HVAC damper is essential to any building, providing many benefits to occupants and businesses.

A damper functions to control the amount of air flowing through the ducts. This ensures that each room or zone receives the right air for specific needs, keeping occupants comfortable while providing energy savings.

Moreover, dampers also play an important role in safety by containing fires within designated compartments and preventing smoke from spreading throughout buildings during fire incidents. These specialised dampers can help limit property damage and protect occupants’ lives by keeping flames and toxic gases contained.

Finally, dampers also provide noise-reduction benefits by preventing loud air turbulence. Keeping airflow in ducts balanced helps maintain a quiet indoor environment where occupants can relax peacefully.


One common method used to control HVAC dampers is manual control. This involves physically adjusting the damper position by hand or using a lever or knob.

Another method is mechanical control, which utilises mechanical devices such as actuators or motors to adjust the damper position automatically. These devices can be programmed to respond to temperature sensors, thermostats, or other environmental factors, ensuring precise and timely adjustments without human intervention.

In recent years, digital technology has introduced electronic control systems for HVAC dampers. These systems utilise electronic sensors, controllers, and actuators to monitor and regulate damper positions based on predefined parameters. They offer enhanced precision, flexibility, and energy efficiency compared to manual or mechanical methods.


A damper is a device that controls or restricts the flow of air within a duct system. It can be manually operated or automated, allowing for precise control over the amount of air passing through. Dampers are commonly used to balance airflow in different building zones, ensuring optimal comfort and energy efficiency.

On the other hand, a duct refers to the network of channels that distribute air throughout a building. Ducts transport conditioned air from heating or cooling systems to various rooms or spaces. They come in different shapes and sizes, such as rectangular or round. They are typically made of metal plates, fibreglass, or flexible materials.

While dampers regulate airflow within ducts, they serve as conduits for air delivery. Dampers help control the volume and direction of airflow within these ducts by opening or closing specific sections.

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