Certified Landscape Irrigation Auditor Practice Exam

The answer is fixed and adjustable pressure regulators, which are essential components in irrigation systems to control and maintain optimal water pressure.

Fixed pressure regulators are designed to maintain a constant output pressure regardless of fluctuations in the incoming water pressure. This consistency helps ensure that irrigation systems operate efficiently, preventing overwatering or underwatering of landscapes.

On the other hand, adjustable pressure regulators allow for customization of the output pressure based on the specific requirements of the irrigation system. This flexibility is beneficial for adapting to varying landscape needs or structural changes within the irrigation setup, ensuring that the system can be optimized for performance.

Understanding the distinction between fixed and adjustable regulators is crucial for selecting the appropriate equipment for the varying conditions found in irrigation management, ultimately contributing to water conservation and effective irrigation practices.