What is a master valve's function in an irrigation system?

The master valve plays a crucial role in an irrigation system by controlling the flow of water to the mainline after it passes through backflow prevention devices. Its primary purpose is to serve as a safety measure that prevents water from flowing into the irrigation system unless it is supposed to. This is significant because it allows for the system to be automatically shut off when not in use, reducing the risk of flooding or water waste and ensuring that the system operates efficiently.

When the master valve is activated, it opens the pathway for water to flow into the mainline and subsequently to the connected zones or sprinkler heads. Conversely, when the system is not in operation, the master valve closes, effectively stopping water flow and protecting both the equipment and the landscape from overwatering.

This functionality is essential in maintaining proper system operation, preventing issues related to excess water, and ensuring longevity of the irrigation infrastructure. Employing a master valve enhances both the efficiency and effectiveness of water management in irrigation practices.