Where does the air relief valve go in a DIS?

The air relief valve in a Drip Irrigation System (DIS) is strategically placed at the highest point of the feed and return manifolds. This location is essential because it allows for the efficient release of trapped air that can accumulate in the system during operation. When air is trapped, it can lead to inefficient water distribution, resulting in dry spots in the irrigation area.

By placing the air relief valve at the highest point, any air that rises to that elevation can be vented out easily, ensuring that the system operates at optimal efficiency. This minimizes the potential for air pockets and helps maintain a steady flow of water throughout the entire irrigation setup. Hence, having the valve positioned here promotes the overall functionality and lifespan of the irrigation system.

Meanwhile, placing the valve at the lowest point of the tubing, at the access point of the system, or near the pressure gauge would not effectively address the problem of trapped air, which is why those options are less suitable for the purpose of air relief considerations.