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The Functions of Air Vent Valve

Water and wastewater systems contain a large amount of dissolved air or gases. This is mainly due to the decomposition of waste matter and changes in pressure and temperature.
This air travels along the pipeline system and collects at high points causing air pockets in the pipe. This can cause surges or vacuum conditions that can damage the pipes and equipment.
The air bubbles can trigger corrosive reactions and reduce the system’s efficiency. This is why it’s important to remove air from the system.
These air valves work by removing the small air pockets that are accumulated in the pipeline. They can be used in various piping applications such as water distribution, sewage, steam and boilers.
They are designed for rapid venting of a large volume of air at start-up or when a tank is being filled, as well as for periodic venting of trace amounts of gas. Depending on the application, they should be mounted at high points in the piping system or at the tank.
These air release valves are typically mounted at high points in a system to automatically release air that occurs naturally in a piping system as the liquid rises. They have small orifices, weighted floats and leverage mechanisms that work together to release accumulated air.