What is the impact of using a swing joint in an irrigation system?

The use of a swing joint in an irrigation system is primarily designed to provide flexibility in making connections between pipes. This flexibility is crucial when it comes to adjusting the height and angle of various components, particularly in areas where changes in terrain or obstructions might require modifications to the setup. With a swing joint, the system can accommodate these adjustments without putting undue stress on the piping or risking damage at connection points. This adaptability in positioning helps ensure that the irrigation system operates efficiently, directing water precisely where it is needed, which can lead to better vegetation growth and water conservation.

The other options do not accurately describe the main purpose of a swing joint. While maintaining consistent water pressure is vital for an irrigation system, it is not a primary function of a swing joint. Prevention of backflow is typically managed by other components, such as check valves. Gathering rainwater for irrigation involves entirely different systems and techniques, such as rainwater harvesting systems, rather than the use of swing joints in an irrigation setup.