The invention proposes a spray boom (1) for spraying a fluid, particularly for agricultural purposes, with a first fluid line (3, 103) that is provided with spaced-apart spray nozzles (2, 102) and configured for feeding fluid to the spray nozzles (2, 102), and with a second fluid line (4, 104) that is connected to the first fluid line (3, 103), wherein the spray boom (1) is configured in such a way that fluid can be fed to the first fluid line (3, 103) via the second fluid line (4, 104) in a spraying mode and fluid can be discharged from the first fluid line (3, 103) via the second fluid line (4, 104) in a circulation mode.
