The invention relates to a switching device for conducting a fluid (2), comprising at least one distribution valve (7, 13) in a first fluid-conducting connection (5) between a first treatment apparatus (3) for the fluid (2) and a second treatment apparatus (4) for the fluid (2), at least one further distribution valve (8, 14) in a second fluid-conducting connection (6) between the first treatment apparatus (3) and the second treatment apparatus (4). The distribution valves (7, 8, 13, 14) each are associated with the first treatment apparatus (3) and/or the second treatment apparatus (4) and have a manually operable switching lever (11, 12, 15, 16) for switching the respective distribution valve (7, 8, 13, 14) at least between a blocking and opening of the respective fluid-conducting connection (5, 6) to the respective treatment apparatus (3, 4). Said switching device is characterized in that the switching levers (11, 12, 15, 16) of the distribution valves (7, 8, 13, 14) associated with the respective treatment apparatus (3, 4) are designed and arranged in such a way that the switching levers can be operated synchronously using one hand of an operating person.