Certified Landscape Irrigation Auditor

What is the primary purpose of maintaining pressure within non-pressure compensating tubing?

1. Even water distribution

2. To minimize plumbing costs

3. To reduce water waste

4. To achieve maximum pressure

The correct answer is: Even water distribution

Maintaining pressure within non-pressure compensating tubing is essential for ensuring even water distribution across the irrigation system. Unlike pressure-compensating tubing, which can adjust flow rates based on varying pressure levels, non-pressure compensating tubing relies on a consistent pressure to deliver similar amounts of water to all emitters or outlets. When pressure is maintained, it helps prevent uneven application rates, which can lead to some areas receiving too much water while others receive too little. This is critical for effective irrigation, as uneven water distribution can result in poor plant health and inefficient water usage. While minimizing plumbing costs and reducing water waste are also important considerations in the design and management of irrigation systems, their relevance to maintaining pressure specifically in non-pressure compensating tubing is secondary. Achieving maximum pressure is not the main goal; rather, it is about maintaining a sufficient and balanced pressure to facilitate the desired water distribution throughout the landscape. Thus, the primary purpose is centered on ensuring that all areas within the irrigation range receive adequate and uniform watering.