Treatment head and container treatment machine comprising a treatment head

An apparatus comprising a treatment head for cleaning a container that has a valve arrangement, wherein said treatment head comprises a tappet, a housing, a first fluid-channel, an annular fluid-channel sect ion, a second fluid-channel, and a flow twister, wherein said tappet is configured to move relative to said housing to open said valve arrangement, wherein said first fluid-channel comprises said annular fluid channel section, wherein said first fluid-channel circumferentially surrounds said second fluid-channel, wherein said first and second fluid-channels provide fluid communication into said container, and wherein said flow twister is disposed in a location selected from the group consisting of said first fluid-channel and a fluid line connected to said first fluid-channel.

A method comprising cleaning a container that comprises a valve arrangement, wherein cleaning said container comprises using a treatment head that has a first fluid-channel and. a second fluid-channel, wherein said first fluid-channel comprises an annular fluid channel section, wherein said first fluid-channel circumferentially surrounds said second fluid-channel, wherein said first and second fluid-channels enable passage of fluid into or out of said container, said method comprising causing fluid that is supplied .into said container via said first fluid-channel to he set into one of a spiral and helical fluid flow at a location selected from the group consisting of said first fluid-channel and a line connected to said first fluid-channel, and, after the entry of said spiral or helical fluid flow into said container, producing a flow swirl around said valve arrangement.