Paint metering cylinder with a removably attachable head closure

A paint-metering cylinder 2 for supplying a paint discharge nozzle with a paint material for painting plants. The cylinder 2 includes a removably attachable head closure 6 and at least one quick-lock closure device structured and arranged to attach the head closure. Cylinder head closure 6 may comprise two disk-type main assemblies 27, 28, where upper ring 27 has a handle 24 and several pins (29, Fig 6) which project into corresponding engagement recesses (30,Fig 5) of cylinder wall 4. Since cylinder head closure 6 is attached to cylinder wall 4 with a type of bayonet closure, the opening and closing can be carried out quickly and simply. The paint-metering cylinder 2 may include at least one rinsing device having at least two rinsing agent outlet openings 17, 19. The rinsing device may also have a rinsing agent inlet opening 18 which along with rinsing agent outlet opening 19 are arranged in the cylinder wall in a substantially tangential direction.