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What is an Air Valve and How does it Work?

Water supply networks must include air valves as a necessary component. You can be certain that an air valve is present in any water distribution pipe or sewage main. Then, what do air valves do? How are air valves used in crucial pipeline infrastructure? You may find the answers to these queries and more technical information about air valves in this article. Water mains that have built up air or a vacuum may have major operational issues and could have unfavourable outcomes. There are various ways that air might enter piping systems, including empty pipelines, the air in the fluid, or mechanical equipment.

The operation of the pipeline may be seriously impacted by air and vacuums created in the pipeline. Reduced Pumping Efficiency, which is one of these effects, the effectiveness of the pumping system can be decreased by air in the pipelines. The air that is confined at the system’s high points prevents flow, raising the pressure head and, thus, the energy needed for flow to occur. Oxygen in the confined air can be a potent corrosive agent, depending on the temperature of the pipeline. The progressive oxidation of the metal by oxygen causes corrosion, obstruction, and structural failure of the pipe. Additionally, it might produce readings from faulty meters and instruments. Therefore using ventomat Air Valves will help eliminate the air in pumps for a better flow thus eliminating the above consequences.

How can air and/or vacuum buildup in water supply systems be avoided? An air valve and a unique hydromechanical flow control mechanism that permits the metered flow of fluid in one or both directions, might be a solution. When a liquid pipeline system is being filled, drained, or used, it serves the purpose of releasing trapped gases or allowing air to enter the pipeline. It’s crucial to pick the ideal place for the installation of an air valve. The air valves are positioned strategically along the pipeline’s course to achieve optimal efficiency. Air valves are necessary at the following locations for proper water and wastewater system aeration and ventilation. At the highest points in the system, air pockets are created when air bubbles assemble and stick together. The air pockets can be ventilated out to the atmosphere by installing air valves here. Local high points can act as a hub for air bubble accumulation. The bubbles are vented to the atmosphere through this air valve.

Larger air pockets might develop at the top of the pipe from dislodged air pockets as they move downhill. A vacuum can also be created by rapid flow in portions of pipe with a downward slope. As a general rule, to effectively vent and pull air into the system, air release valves and air vacuum valves should be fitted every 800m for lengthy pipelines. The pressure and velocity variations that follow flow-throttling components like turbines or control valves can result in the creation of a vacuum. To draw air into the system, air vacuum valves are required close to these components. Pumps and condensed pipe sections that increase flow also introduce air bubbles. To release these air pockets, air release valves must be fitted after these components.

Finally, make sure to place your air valves in areas that are both accessible and well-ventilated. This guarantees that the systems are never short on air and that the air being evacuated has somewhere to go. Additionally, it makes it simpler to reach the valves for upkeep.

the authorAlmetaStanek