What happens when the diaphragm of an irrigation valve is in the down position?

• A. Stops Water
• B. Allows Water into Landscape
• C. Closes the Valve
• D. Activates the Controller

Answer: (B)

When the diaphragm of an irrigation valve is in the down position, it allows water to flow into the landscape. The diaphragm acts as a barrier that separates the water pressure from the valve's control mechanism. When the diaphragm is positioned down, water pressure can overcome the resistance and flow through the valve, thereby irrigating the landscape.

In contrast, a diaphragm that is in the up position typically indicates that the valve is closed, preventing water from entering the system, which explains why other choices would not be applicable in this scenario. Understanding how the diaphragm functions is crucial for effective irrigation system management, as it directly influences water distribution within the landscape.