Patent ID: 7290559

Claim:
A check valve for a high-pressure pump of a fuel injection system for an internal combustion engine, comprising a one piece valve housing ( 40 ) adapted to be inserted into a receptacle ( 34 ) in a pump housing part, a pistonlike valve member ( 60 ) guided longitudinally displaceably in the valve housing ( 40 ), which valve member cooperates with a valve seat ( 48 ) embodied on the valve housing ( 40 ), the valve member ( 60 ) being urged in the closing direction by a prestressed closing spring ( 70 ) and in the opening direction by the pressure prevailing in an inlet ( 38 ), the valve member ( 60 ) being inserted into the valve housing ( 40 ) from the side of the valve seat ( 48 ), the valve housing ( 40 ) being cup-shaped and having both a bottom ( 42 ) and a jacket region that has a recess ( 41 ); the valve housing ( 40 ) pointing, with the open end of its recess ( 41 ), out of the receptacle ( 34 ); the valve seat ( 48 ) being located on the bottom ( 42 ) of the valve housing ( 40 ), facing away from the recess ( 41 ); the valve member ( 60 ) protruding with a shaft ( 62 ) through a bore ( 44 b ) in the bottom ( 42 ) into the recess ( 41 ) in which the closing spring ( 70 ) is located; and the check valve including at least one inlet conduit ( 50 ) extending through the valve housing ( 40 ), wherein the at least one inlet conduit ( 50 ) discharges at least approximately at a tangent into a bore ( 44 a ) surrounding the valve member ( 60 ).