What is the function of an air release valve in a water distribution system?

The function of an air release valve in a water distribution system is to release trapped air from the pipeline. This is crucial because when air accumulates in the pipes, it can cause a variety of operational issues, including reduced water flow, water hammer, and potential damage to the system.

As water is transported through pipelines, it can create voids where air is trapped, especially in areas where the pipeline elevation changes. If not released, this trapped air can lead to inefficiencies and even system failures. Therefore, air release valves play a critical role in maintaining the hydraulic efficiency of the water distribution system by allowing air to escape, thus ensuring proper water flow and reducing the risk of negative pressure scenarios. This design helps maintain a full pipe of water, enhances flow rates, and supports the overall functionality of the water distribution network.