The arrangement comprises at least one injection hole (15) formed in a selected component of the nozzle body (10) and the valve component (20). One end of the injection hole is open to the selected component of the nozzle body and the valve component and the other end is open to an inner surface of a fluid through passage (30). An inner opening section of the injection hole is formed with a recess section, which in an axial direction of the injection hole on one side of it has a large width and on the other side has a small width, so that the injection hole on the one side is small and on the other side is large.
