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 (P1) 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 (V1), and wherein a second pressure chamber inner pressure (P2) can be adjusted and set for a second operational state in the pressure chamber , wherein the second pressure chamber inner pressure (P2) 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 (V2), and wherein a switchover from the first pressure chamber inner pressure (P1) to the second pressure chamber inner pressure (P2) by the pressure control device has the effect that the through-wall expands, and the through-line occupies a second volume (V2) which is greater in comparison to the first volume (V1), 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 (P1) 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 (V1), and wherein a second pressure chamber inner pressure (P2) can be adjusted and set for a second operational state in the pressure chamber , wherein the second pressure chamber inner pressure (P2) 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 (V2), and wherein a switchover from the first pressure chamber inner pressure (P1) to the second pressure chamber inner pressure (P2) by the pressure control device has the effect that the through-wall expands, and the through-line occupies a second volume (V2) which is greater in comparison to the first volume (V1), as a result of which an aseptic pressure relief comes about in the media line . <EOS>