Certified Landscape Irrigation Auditor

What is the primary function of flush plugs in an irrigation system?

1. Prevent leaks

2. Allow water to move through tubing at a higher velocity to flush out soil particles

3. Maintain constant pressure

4. Regulate water temperature

The correct answer is: Allow water to move through tubing at a higher velocity to flush out soil particles

Flush plugs serve an essential role in irrigation systems by enabling the effective removal of sediments, soil particles, and other debris that may accumulate within the tubing. When the irrigation system is activated, the flush plugs can be removed, allowing water to flow through the system at a higher velocity. This surge of water efficiently dislodges and carries away unwanted materials that could otherwise cause clogs or reduce system efficiency. Using flush plugs is particularly important in ensuring the longevity and optimal performance of the irrigation system. By facilitating a thorough cleaning process, they help maintain unobstructed water flow and even distribution of water across the landscape. This preventive maintenance helps to avoid much larger problems that could develop if sediment build-up is left unaddressed. While the other options may seem relevant, they do not accurately capture the primary function of flush plugs. Preventing leaks focuses on the integrity of the system's connections rather than cleaning. Constant pressure maintenance and temperature regulation pertain more to other components of the irrigation system rather than specifically the function of flush plugs.