What is design pressure in an irrigation system?

Design pressure in an irrigation system refers to the pressure required for an emission device, such as a sprinkler or dripper, to operate effectively and deliver water in the intended manner. This is vital for ensuring that each part of the irrigation system functions as designed, providing adequate coverage and efficiency in water distribution.

Selecting the proper design pressure allows irrigation professionals to determine the appropriate components, such as pumps and piping, to achieve maximum performance while minimizing waste. Maintaining the system at this pressure ensures that emission devices operate within their optimal range, delivering the correct flow rates and distribution patterns necessary for plant health.

The other options discuss related concepts but do not accurately define design pressure. The maximum pressure in the system may exceed the required pressure for proper function or might not represent the regular operating conditions. The pressure at which water is sourced and the pressure measured during testing are relevant, but they do not specifically pertain to the operational needs of emission devices within the system.