Switchable slotted valve for a coating installation for controlling the dispensing of a pasty coating material, having the following features: a. it comprises a valve bore which is incorporated into a valve basic body and which is oriented in a valve direction of extent and which has an inner circumferential surface, b. it comprises a feed duct which is arranged in the region of the inner circumferential surface of the valve bore and which opens into the valve bore, c. it comprises a nozzle duct which is arranged in the region of the inner circumferential surface of the valve bore and which leads out from the valve bore, d. it comprises a valve sleeve which is arranged in the valve bore and which has an inner circumferential surface, which delimits a cavity oriented in the valve direction of extent, and an outer circumferential surface, e. the valve sleeve comprises a slot-shaped sleeve inlet which opens into the cavity and a slot-shaped sleeve outlet which leads out from the cavity, f. it comprises a valve control rod which is arranged in the valve bore, and which is traversed by a valve duct which has a slot-shaped duct inlet and a slot-shaped duct outlet, wherein g. the valve sleeve is non-rotatably mounted in the valve bore, with the result that the feed duct is connected to the cavity via the sleeve inlet, and the cavity is connected to the nozzle duct via the sleeve outlet, h. the valve control rod is mounted in the cavity of the valve sleeve so as to be rotatable about an axis of rotation extending in the valve direction of extent, i. the valve control rod is rotatable in the valve sleeve between a passage position and a closed position, wherein, in the passage position, the feed duct and the nozzle duct are communicatively connected via the valve duct and the sleeve inlet and the sleeve outlet, and wherein, in the closed position, the nozzle duct is isolated from the feed duct by the valve control rod. a. it comprises a valve bore which is incorporated into a valve basic body and which is oriented in a valve direction of extent and which has an inner circumferential surface, b. it comprises a feed duct which is arranged in the region of the inner circumferential surface of the valve bore and which opens into the valve bore, c. it comprises a nozzle duct which is arranged in the region of the inner circumferential surface of the valve bore and which leads out from the valve bore, d. it comprises a valve sleeve which is arranged in the valve bore and which has an inner circumferential surface, which delimits a cavity oriented in the valve direction of extent, and an outer circumferential surface, e. the valve sleeve comprises a slot-shaped sleeve inlet which opens into the cavity and a slot-shaped sleeve outlet which leads out from the cavity, f. it comprises a valve control rod which is arranged in the valve bore, and which is traversed by a valve duct which has a slot-shaped duct inlet and a slot-shaped duct outlet, wherein g. the valve sleeve is non-rotatably mounted in the valve bore, with the result that the feed duct is connected to the cavity via the sleeve inlet, and the cavity is connected to the nozzle duct via the sleeve outlet, h. the valve control rod is mounted in the cavity of the valve sleeve so as to be rotatable about an axis of rotation extending in the valve direction of extent, i. the valve control rod is rotatable in the valve sleeve between a passage position and a closed position, wherein, in the passage position, the feed duct and the nozzle duct are communicatively connected via the valve duct and the sleeve inlet and the sleeve outlet, and wherein, in the closed position, the nozzle duct is isolated from the feed duct by the valve control rod.