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A check valve for arranging between a first pressure chamber, in which a first pressure prevails, and a second pressure chamber in which a second pressure prevails. The valve comprises a valve housing on which a valve seat is formed, and comprises a blocking element which is designed in a blocking p

A check valve for arranging between a first pressure chamber, in which a first pressure prevails, and a second pressure chamber in which a second pressure prevails. The valve comprises a valve housing on which a valve seat is formed, and comprises a blocking element which is designed in a blocking position, to close a valve opening in the region of the valve seat, in order to block a connection between the first and the second valve chambers, and is designed in an open position to release the valve opening in order to release the connection between the first and the second valve chambers. The valve seat is configured as an oblique surface, which relative to the flow direction is aligned at an angle which is greater than 15° and less than 80°. The blocking element comprises a planar blocking lobe made from an elastically deformable material which in the blocking position bears against the oblique surface, and in the open position lifts away from the oblique surface in order to release the connection.

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1. A check valve for arranging between a first pressure chamber, in which a first pressure of a fluid prevails, and a second pressure chamber in which a second pressure prevails, comprising a valve housing on which a valve seat is formed, and comprising a blocking element which is designed in a bloc

1. A check valve for arranging between a first pressure chamber, in which a first pressure of a fluid prevails, and a second pressure chamber in which a second pressure prevails, comprising a valve housing on which a valve seat is formed, and comprising a blocking element which is designed in a blocking position to close a valve opening in the region of the valve seat, in order to block a connection between the first and the second valve chambers, when the second pressure is greater than the first pressure, and is designed in an open position to release the valve opening in order to release the connection between the first and the second valve chambers when the first pressure is greater than the second pressure, the fluid being able to flow in the open position in a flow direction from the first pressure chamber into the second pressure chamber, wherein the valve seat is configured as an oblique surface, which is aligned relative to the flow direction at an angle which is greater than 15° and less than 80°, the blocking element comprising a planar blocking lobe made from an elastically deformable material which in the blocking position bears against the oblique surface, and in the open position, due to the difference between the first pressure and the second pressure, lifts away from the oblique surface in order to release the connection, wherein the blocking element has an annular fastening portion, by means of which the blocking element is fastened to the valve housing, wherein the valve housing has an annular fastening recess, which is aligned transversely to the flow direction, the fastening portion being inserted into the fastening recess in order to secure the blocking element in the flow direction positively to the valve housing, and wherein the annular fastening portion comprising an annular portion, which is inserted into an annular fastening recess of the valve housing. 2. The check valve as claimed in claim 1, wherein the angle is greater than 30°. 3. The check valve as claimed in claim 1, wherein the angle is less than 60°. 4. The check valve as claimed in claim 1, wherein the blocking element is secured at a rear region of the oblique surface viewed in the flow direction to the valve housing. 5. The check valve as claimed in claim 1, wherein the valve seat has two oblique surfaces, which are inclined in opposing directions and in longitudinal section form a V-shape, a blocking lobe being associated with each oblique surface. 6. The check valve as claimed in claim 5, wherein the two blocking lobes are integrally connected together. 7. The check valve as claimed in claim 1, wherein the annular portion is connected to the blocking lobe via at least one longitudinal web portion. 8. The check valve as claimed in claim 7, wherein the longitudinal web portion is arranged in a longitudinally aligned recess of the valve housing. 9. The check valve as claimed in claim 1, wherein two blocking lobes are connected together in a transverse web, the ends thereof in each case being connected to the annular portion via a longitudinal web portion. 10. The check valve as claimed in claim 1, wherein the valve housing has a cylindrical portion, which has at least one longitudinal channel connected to the valve opening, the valve seat being configured on a front face of the cylindrical portion viewed in the flow direction. 11. A check valve for arranging between a first pressure chamber, in which a first pressure of a fluid prevails, and a second pressure chamber in which a second pressure prevails, comprising a valve housing on which a valve seat is formed, and comprising a blocking element which is designed in a blocking position to close a valve opening in the region of the valve seat, in order to block a connection between the first and the second valve chambers, and is designed in an open position to release the valve opening in order to release the connection between the first and the second valve chambers, wherein the valve seat is configured as an oblique surface, the blocking element comprising an integral blocking lobe which in the blocking position bears against the oblique surface, and in the open position lifts away from the oblique surface in order to release the connection, wherein the blocking element has an integral fastening portion, by means of which the blocking element is fastened to the valve housing, and wherein the fastening portion comprising an annular portion, which is inserted into an annular fastening recess of the valve housing. 12. The check valve as claimed in claim 11, wherein the annular fastening recess is aligned transversely to the flow direction, the annular portion being inserted into the annular fastening recess in order to secure the blocking element in the flow direction positively to the valve housing. 13. The check valve as claimed in claim 11, wherein the annular portion is connected to the blocking lobe via at least one longitudinal web portion. 14. The check valve as claimed in claim 13, wherein the longitudinal web portion is arranged in a longitudinally aligned recess of the valve housing. 15. The check valve as claimed in claim 11, wherein two blocking lobes are connected together in a transverse web, the ends thereof in each case being connected to the annular portion via a longitudinal web portion.