New series of rotary nozzles made of corrosion resistant material for cleaning the inside of the tank. Available in three versions A-B-C to meet different flushing requirements and allow adaptation to different tank shapes and sizes. The rotary head, moved by the liquid, allows 360° flushing. In all versions, the head rotates on the horizontal axis; version C is equipped with a head that also rotates on the vertical axis. Wide range of interchangeable nozzles with bayonet connection for different water consumption and different head rotation speeds. Supplied with hose connection Ø 15 or on request Ø 10 or Ø 13, versions for extension with ¾" male thread. All versions can be supplied with extension to 30 cm or 50 cm.