Switchable slot valve for a coating plant for controlling the delivery of a pasty coating material, having - a valve bore which is incorporated in a valve main body and is aligned in a valve extent direction, - a supply duct which is disposed in the region of an inner circumferential face of the valve bore and opens into the valve bore, - a nozzle duct which is disposed in the region of the inner circumferential face of the valve bore and leads out of the valve bore, and - a valve control rod being disposed in the valve bore, which is mounted so as to be rotatable in the valve bore about a rotatable rotation axis extending in a valve extent direction, and which is penetrated by a valve duct having a slot-shaped duct inlet and a slot-shaped duct outlet, wherein - the valve control rod in the valve bore is rotatable between a throughput position and a closed position, wherein in the throughput position the supply duct and the nozzle duct are interconnected so as to communicate via the valve duct, and wherein in the closed position the nozzle duct is isolated from the supply duct by the valve control rod, and - bearing faces (48a, 48b) which, for the purpose of bearing the valve control rod, bear on the inner circumferential face of the valve bore are provided on the valve control rod, in the region of two outer circumferential part-faces (44a, 44b), between the slot-shaped duct inlet and the slot-shaped duct outlet, characterized in that - depression regions, in the region of which the respective outer circumferential part-face (44a, 44b) does not bear on the inner circumferential face of the valve bore, are provided on the outer circumferential part-faces (44a, 44b). - a valve bore which is incorporated in a valve main body and is aligned in a valve extent direction, - a supply duct which is disposed in the region of an inner circumferential face of the valve bore and opens into the valve bore, - a nozzle duct which is disposed in the region of the inner circumferential face of the valve bore and leads out of the valve bore, and - a valve control rod being disposed in the valve bore, which is mounted so as to be rotatable in the valve bore about a rotatable rotation axis extending in a valve extent direction, and which is penetrated by a valve duct having a slot-shaped duct inlet and a slot-shaped duct outlet, - the valve control rod in the valve bore is rotatable between a throughput position and a closed position, wherein in the throughput position the supply duct and the nozzle duct are interconnected so as to communicate via the valve duct, and wherein in the closed position the nozzle duct is isolated from the supply duct by the valve control rod, and - bearing faces (48a, 48b) which, for the purpose of bearing the valve control rod, bear on the inner circumferential face of the valve bore are provided on the valve control rod, in the region of two outer circumferential part-faces (44a, 44b), between the slot-shaped duct inlet and the slot-shaped duct outlet, - depression regions, in the region of which the respective outer circumferential part-face (44a, 44b) does not bear on the inner circumferential face of the valve bore, are provided on the outer circumferential part-faces (44a, 44b).