Container treatment device or system in the form of a filling machine or filling system or container filling system, with a media line in the form of a beverage, filling material, or product line, and a pressure relief device for aseptic pressure relief in the media line, wherein the pressure relief device comprises at least one housing with a housing wall, a through-line which is in connection with the media line and comprises a through-wall, and at least one feed line connection and a discharge line connection for the respective connection to the media line, wherein a pressure chamber defined by the housing wall is formed in the interior of the housing, and wherein the through-line extends at least in part through the pressure chamber in the interior of the housing, and wherein the through-wall of the through-line is at least partially formed from an elastically deformable material in a section extending through the pressure chamber, and wherein the pressure relief device is configured in such a way that at least one predefined pressure chamber inner pressure (P1, P2) can be adjusted in the pressure chamber, and wherein the pressure relief device comprises a pressure control device which is in effective connection with the pressure chamber, wherein the pressure control device is configured for the setting of the at least one predefined pressure chamber inner pressure (P1, P2) in the pressure chamber, wherein a first pressure chamber inner pressure can be adjusted and set for a first operational state in the pressure chamber, which essentially corresponds to the production pressure prevailing in the media line and has the effect that the through-line occupies a first volume, and wherein a second pressure chamber inner pressure can be adjusted and set for a second operational state in the pressure chamber, wherein the second pressure chamber inner pressure corresponds to a pressure relief pressure which is lower in comparison with the production pressure, and which has the effect that the through-line occupies a second volume, and wherein a switchover from the first pressure chamber inner pressure to the second pressure chamber inner pressure by the pressure control device has the effect that the through-wall expands, and the through-line occupies a second volume which is greater in comparison to the first volume, as a result of which an aseptic pressure relief comes about in the media line. and wherein the pressure relief device comprises a pressure control device which is in effective connection with the pressure chamber, wherein the pressure control device is configured for the setting of the at least one predefined pressure chamber inner pressure (P1, P2) in the pressure chamber, wherein a first pressure chamber inner pressure can be adjusted and set for a first operational state in the pressure chamber, which essentially corresponds to the production pressure prevailing in the media line and has the effect that the through-line occupies a first volume, and wherein a second pressure chamber inner pressure can be adjusted and set for a second operational state in the pressure chamber, wherein the second pressure chamber inner pressure corresponds to a pressure relief pressure which is lower in comparison with the production pressure, and which has the effect that the through-line occupies a second volume, and wherein a switchover from the first pressure chamber inner pressure to the second pressure chamber inner pressure by the pressure control device has the effect that the through-wall expands, and the through-line occupies a second volume which is greater in comparison to the first volume, as a result of which an aseptic pressure relief comes about in the media line.