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Air enters water pipelines in several ways. When new pipes are installed or when maintenance is performed, empty sections get filled with air. Even during normal operation, dissolved air in the water can separate and rise to high points in the system. Mechanical issues like leaking fittings, faulty pumps, and aging seals are also common causes of air in water pipes. Each of these factors creates situations where air pockets collect and cause disruptions in flow.
An air valve is a water pipeline valve designed to manage the presence of air in the system. It allows air to escape during filling and operation, and lets air in when the system is drained or pressure drops. These devices are critical for preventing vacuum conditions and maintaining efficient water flow.
Air valves work through mechanical movements triggered by pressure changes. For instance, as water fills a pipeline, rising water pushes air ahead. The air release valve for water line opens to let the air escape. When water drains out, a vacuum can form. In this case, the valve opens to admit air and prevent the pipe from collapsing. Most air valves use a float or spring system to detect these changes and respond automatically. This ensures the system adjusts in real-time without manual control.
Types of Air Valves
Single ball air valve
A single ball air valve is a type of air release valve designed to automatically vent trapped air in pressurized systems, typically water pipelines, while also allowing air to be admitted when draining. It utilizes a single ball to control the flow of air and liquid, making it a compact and reliable solution for air release.
The primary function of a single ball air valve is to continuously release trapped air that accumulates in pipelines during operation. It also allows air to be drawn into the system when the pressure drops, preventing vacuum formation and ensuring a smooth flow of water. By removing air, these valves help reduce pressure surges, prevent bursting of pipelines, and enhance overall system performance.
Double ball air valve
A double ball air valve is a type of air valve designed to automatically release air from a pipeline or system. It's commonly used in water systems and HVAC systems. The valve has two orifices or openings, one for releasing air and one for admitting air.
The double ball air valve's primary function is to release trapped air from the system and prevent airlocks that can reduce flow and efficiency. It also helps to prevent vacuum formation when the system is drained, which can lead to pipe damage. The valve typically consists of two chambers or orifices, each with a ball that moves to open or close the opening. One orifice is designed to release air, while the other allows air to enter the system when needed.
Air naturally rises in water pipelines and collects at the highest points. Placing air valves at these locations is essential to continuously release the trapped air and keep flow steady.
Pipelines with long slopes are prone to vacuum formation. A vacuum may cause pipe collapse or rapid wear. Installing vacuum valves every few hundred meters helps manage pressure and extend pipe life.
Improved Flow Efficiency: Removing air pockets reduces resistance in water pipes. Pumps work more efficiently, use less energy, and the system experiences fewer slowdowns.
Protection Against Pipe Damage and Water Hammer: Air pockets contribute to pressure shocks known as air hammer. These shocks damage pipe joints, cause noise, and can break weak sections.
Enhanced Accuracy in Instrumentation: Air in pipes affects how meters and valves function. Removing the air ensures more accurate readings and smoother operation of control devices.
FLUIDOsupplies a wide range of water pipeline valves, including butterfly valves, ball valves, gate valves, globe valves, check valves, and more. As a leading manufacturer and exporter specializing in steel valves, fittings, and flanges, FLUIDO has served more than 35 countries and regions for over 20 years. By also partnering with top factories in Shandong and Hebei, FLUIDO offers customers complete one-stop sourcing and reliable quality.
Air valves play an essential role in keeping water pipelines safe and efficient. Without them, trapped air leads to flow interruptions, high energy costs, and system breakdowns. The air release valve for water ensures a steady and safe operation of water systems.
FLUIDO provides standard and custom solutions for water pipeline valves, including advanced air valve systems. Contact FLUIDO today for expert advice on how to remove air from water pipes using high-quality valves tailored to your system.
