PURPOSE: To provide a directional control valve having at least one inlet port and one exhaust port and capable of preventing compressed air from being allowed to flow from the exhaust port to equipment on a consumer side in generating of dynamic pressure.

CONSTITUTION: A control piston 14 for controlling an inlet port 18, at least one consumer side port 24 or 26 and at least one exhaust port 32 or 34 and for determining the longitudinal axis is housed in a housing 48. A one-way restrictor 5 is directly arranged in the housing in the traverse direction in relation to the longitudinal axis of the control piston 14 between the discharge ports 32, 34 and the consumer side ports 24, 26.