Laminar Pte Ltd Singapore

Laminar Pte Ltd

Air Valves

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air release valve combination automatic

Air Valves

Air valves play a crucial role in various industries and applications, ensuring efficient pipeline systems working conditions. Our high-capacity, automatic air valve is a combination air valve that performs three functions altogether:

  • Admitting air,
  • Releasing air in the pipelines, and
  • Releasing accumulated air during regular operation.

An automatic air valve is usually designed to release small volumes of air trapped from a system, preventing the formation of air pockets that can disrupt the flow or cause damage. These valves are typically installed at high points in pipelines or systems where air tends to accumulate. Eliminating trapped air help maintain optimal system performance and prevent issues such as reduced efficiency, water hammer, or cavitation.

An automatic air valve primarily controls pressure within a system by releasing excess air or gas. Continual removal of air helps to secure an efficient operation. Negative pressure can cause the pipelines to dysfunction and collapse.

These valves are often found in tanks, pipelines, or equipment where pressure fluctuations can occur due to temperature or fluid level changes. Maintaining proper pressure levels ensures safety and pipeline efficiency while preventing potential damage caused by overpressure.

The use cases for both types of air valves are diverse and span across industries such as water treatment plants, oil refineries, HVAC systems, irrigation networks, and more.

In these applications, the reliable operation of air valves is essential for maintaining efficiency, preventing downtime, and protecting equipment from potential damage.

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Sewage Air Valve

Sewage grease, corrosive gases, solids, and microorganisms in sewage combine to challenge maintenance and increase the risks of pipeline components in wastewater pipeline systems.

Water Air Valve

Air release valves are crucial in efficiently managing water lines, mitigating pressure surges and negative pressure caused by flow rate fluctuations, ensuring the uninterrupted flow of water.


An air valve is an indispensable component in any pipeline system, allowing for the efficient and safe operation of various industrial applications. It is a vital link between the source and destination of air or gas, ensuring optimal flow and pressure levels.

Air valves are designed to automatically release trapped air from a pipeline system, preventing the formation of air pockets that can disrupt the flow or cause damage.

They also act as failsafe devices that protect equipment from potential damage caused by overpressure.

By mitigating potential issues, such as negative pressures, they improve efficiency while safeguarding equipment integrity – making them invaluable components for any pneumatic system.


Every system needs at least one air valve installed at its highest point, as this is where trapped air accumulates. Additionally, air relief valves should be placed in tanks and pipeline sections where frequent pressure fluctuations exist.

It is important to remember that the installation location of an air valve must meet specific demands. For example, the area must be protected from excessive moisture and dust to prevent corrosion or clogging. Additionally, checking whether any local codes or regulations must be considered before installation is essential.

By installing air valves in the correct locations and using high-quality products designed for an application’s specific requirements, you can ensure reliable and safe operations for any pneumatic system.


Several types of air valves serve different purposes in various industries. One common type is the vacuum air valve, which controls the flow of air or gas in a system and prevents backflow. The vacuum air valve, or so-called vacuum breaker’s primary function, is to prevent negative pressure by allowing air to enter the system when the pressure drops, ensuring the system’s safety and integrity.

Another type is the combination air valve, which combines the three functions of an air valve, which are;

  • Venting air when filling the pipeline,
  • Admitting air when draining pipeline, and
  • Continuous pipeline venting to release small quantities of air carried and released by the medium (water).

This type of valve is commonly used in water distribution systems to eliminate excess air and maintain optimal system performance.

Stainless steel valves are highly durable and corrosion-resistant, making them ideal for applications where reliability and longevity are crucial. These valves are commonly used in oil and gas, chemical processing, and wastewater treatment industries.

Automatic air release valves play a critical role in maintaining the efficiency of water supply systems by automatically releasing trapped air. These valves help prevent pipe bursts, water hammer, and reduced flow rates.

The last type of air valve is the kinetic air valve, which primarily discharges the accumulated air from flowing water to maintain the efficiency of the pipeline system.

In summary, there are:

  • Vacuum break air valves or vacuum valves
  • Combination or automatic air valves
  • Kinetic air valves

Understanding the difference between air relief and air release valves is crucial when managing air in pipelines and systems. While they both serve the purpose of releasing trapped air, they operate in different ways and are designed for specific applications.

An air relief valve primarily releases large volumes of air accumulating in a system. These valves are typically installed at high points or peaks in the pipeline where air tends to collect. When the pressure inside the system exceeds a certain threshold, the air relief valve opens, allowing the trapped air to escape and restore equilibrium.

On the other hand, an air release valve is specifically designed to release smaller volumes of entrapped air that may accumulate at various points along a pipeline.

These valves are strategically placed where pockets of trapped air can form, such as high points or areas with elevation changes. The purpose of an air release valve is to prevent excessive pressure build-up by continuously releasing small amounts of entrapped air as it accumulates.

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