Valve for a flowing fluid

A metering valve for a flowing fluid, wherein the metering valve is configured as an injector for an internal combustion engine, comprising:

• a valve-seat member which closes a valve chamber, wherein a valve opening is formed in the valve-seat member;
• and
• a spray orifice disk positioned downstream from the valve-seat member in the flow direction of the fluid, the spray orifice disk having at least one spray orifice, a swirl chamber which is concentric with the spray orifice and at least one swirl duct leading from the swirl chamber to beneath the valve opening, wherein the swirl chamber and the swirl duct are integrally formed as recesses into the disk surface of the spray orifice disk facing the valve-seat member, and wherein the swirl duct has a duct cross section and the spray orifice has an orifice cross section which are dimensioned in such a way that the ratio of the duct cross section to the orifice cross section is equal to or greater than 1.5,
• wherein the swirl duct has an inflow region leading away from the valve opening and an incident flow region opening into the swirl chamber, the incident flow region is situated in such a way that the fluid flows tangentially into the swirl chamber,
• wherein a single spray orifice is present, which is situated at a radial distance from the valve opening, and wherein two curved swirl ducts are guided to the swirl chamber of the single spray orifice, the two curved swirl ducts being situated laterally reversed from each other.