A control valve means for controlling a sanitary device, comprising: - a valve housing having ∘ a vacuum chamber connected to a first vacuum port for connecting a vacuum line, ∘ an intermediate chamber connected to a second vacuum port for connecting a second vacuum line, and ∘ an ambient pressure chamber connected to the surroundings by means of a ventilation opening, - a valve plunger which is movable relative to the housing and which has a manually operable actuator element at a first end, - a first seal cooperating with the housing and the valve plunger, which ∘ seals the vacuum chamber against the intermediate chamber in a first position of the valve plunger relative to the housing and ∘ releases a connection between the vacuum chamber and the intermediate chamber in a second position of the valve plunger relative to the housing, - a second seal cooperating with the housing and the valve plunger, which ∘ releases a connection between the vacuum chamber and the ambient pressure chamber in a first position of the valve plunger relative to the housing, and ∘ seals the intermediate chamber against the ambient pressure chamber in a second position of the valve plunger relative to the housing, wherein the control valve means comprises a pneumatic valve unit which is coupled to the valve plunger and has a valve member which - blocks a compressed air inlet against a compressed air outlet in a first position of the valve plunger relative to the housing and - releases a connection between the compressed air inlet and the compressed air outlet in a second position of the valve plunger relative to the housing. - a valve housing having ∘ a vacuum chamber connected to a first vacuum port for connecting a vacuum line, ∘ an intermediate chamber connected to a second vacuum port for connecting a second vacuum line, and ∘ an ambient pressure chamber connected to the surroundings by means of a ventilation opening, ∘ a vacuum chamber connected to a first vacuum port for connecting a vacuum line, ∘ an intermediate chamber connected to a second vacuum port for connecting a second vacuum line, and ∘ an ambient pressure chamber connected to the surroundings by means of a ventilation opening, - a valve plunger which is movable relative to the housing and which has a manually operable actuator element at a first end, - a first seal cooperating with the housing and the valve plunger, which ∘ seals the vacuum chamber against the intermediate chamber in a first position of the valve plunger relative to the housing and ∘ releases a connection between the vacuum chamber and the intermediate chamber in a second position of the valve plunger relative to the housing, ∘ seals the vacuum chamber against the intermediate chamber in a first position of the valve plunger relative to the housing and ∘ releases a connection between the vacuum chamber and the intermediate chamber in a second position of the valve plunger relative to the housing, - a second seal cooperating with the housing and the valve plunger, which ∘ releases a connection between the vacuum chamber and the ambient pressure chamber in a first position of the valve plunger relative to the housing, and ∘ seals the intermediate chamber against the ambient pressure chamber in a second position of the valve plunger relative to the housing, ∘ releases a connection between the vacuum chamber and the ambient pressure chamber in a first position of the valve plunger relative to the housing, and ∘ seals the intermediate chamber against the ambient pressure chamber in a second position of the valve plunger relative to the housing, - blocks a compressed air inlet against a compressed air outlet in a first position of the valve plunger relative to the housing and - releases a connection between the compressed air inlet and the compressed air outlet in a second position of the valve plunger relative to the housing.