Patent ID: 8752805

Claim:
A pressure control valve, for use in a motor vehicle automatic transmission, comprising: a housing; and a valve slide guided in the housing, on which at least one inflow control edge is configured, which cooperates with an inflow opening in the housing; wherein a constriction in a section of the valve slide is present adjacent to the inflow control edge, which lies at least approximately opposite to a control opening in the housing, and wherein the valve slide has a circumferential annular groove, which lies on a side of the inflow control edge facing away from the constriction and approximately opposite the inflow opening, wherein the width of the annular groove is less than the width of the inflow opening, and wherein the inflow control edge cooperates with the inflow opening in the housing in such a way that the inflow control edge one of frees and closes a hydraulic connection between the inflow opening and and the control opening; wherein because of a concavely curved section of the constriction, the diameter of the constriction has a minimum, and after the concavely curved section, the constriction has a section having a constant diameter, and wherein the section having the constant diameter is bordered by a radial wall section, at whose radial outer end a discharge control edge is formed which cooperates with a discharge opening in the housing.