Check valve

A check valve including a valve body with a bore that serves as a flow passage, an inset ring (4) secured to said valve body, said inset ring having a flow passage coaxial with said flow passage in said valve body, said inset including a conical face which forms a conical valve seat along said conical face, a movable valve element which has a spherical surface portion that cooperates with said conical valve seat in a manner such that sealing is achieved, said movable valve element being installed in said valve body in a manner such that said movable valve element is radially guided at its upper end by a radial guidance zone inside said bore which bore extends in a direction of opening of said valve, said movable valve element contains axially aligned recesses in an outer surface portion therein for a medium to flow downstream through said axially aligned recesses away from said valve seat, said axially aligned recesses interconnecting medium flow regions upstream and downstream of the radial guidance zone, and said movable valve element being subjected to a force that acts in a closing direction, said movable valve element (3) being manufactured from a spherical ball, said movable valve element including a spherical surface portion (7) so that there is a radial line-contact of said movable valve element with the bore (1), and said recesses (8, 18) in said movable valve element for the medium flow extend along the spherical surface portion (7) between a zone which seats upon said valve seat (5) and the radial guidance zone (11) whereby fluid flows from said axially aligned recesses into said bore.