High-pressure valve for an installation for the high-pressure treatment of products in a high-pressure chamber, wherein the products, acted on by a high-pressure medium, are treated at a pressure of up to 10 000 bar, having - a valve body with an inlet and an outlet, - a valve seat between the inlet and the outlet, - wherein the valve seat has an inlet side of the valve seat and an outlet side of the valve seat, and the inlet side of the valve seat forms the inlet, - a bore within the valve seat, through which bore the high-pressure medium flows from the inlet to the outlet when the high-pressure valve is in the open position, - a valve spindle, wherein the valve spindle tip forms a part of the valve spindle, and - wherein the valve spindle tip seals off the valve seat from the inlet side of the valve seat to the outlet side of the valve seat when the high-pressure valve is in the closed state, characterized in that - the valve spindle tip has a cone-shaped end and a shank, - the valve seat has a concentric counterbore, - wherein the concentric counterbore has, in the direction of the inlet side of the valve seat, a conical surface, - and the concentric counterbore has, in the direction of the outlet side of the valve seat, a shank counterpart surface with a cylindrical form or a conical form with an angle of up to 6° inclination with respect to the axis of the valve seat, - wherein the cone-shaped end of the valve spindle tip seals off against the conical surface of the counterbore of the valve seat when the high-pressure valve is in the closed state, and the shank of the valve spindle tip forms a gap with the shank counterpart surface of the valve seat. - a valve body with an inlet and an outlet, - a valve seat between the inlet and the outlet, - wherein the valve seat has an inlet side of the valve seat and an outlet side of the valve seat, and the inlet side of the valve seat forms the inlet, - a bore within the valve seat, through which bore the high-pressure medium flows from the inlet to the outlet when the high-pressure valve is in the open position, - a valve spindle, wherein the valve spindle tip forms a part of the valve spindle, and - wherein the valve spindle tip seals off the valve seat from the inlet side of the valve seat to the outlet side of the valve seat when the high-pressure valve is in the closed state, characterized in that - the valve spindle tip has a cone-shaped end and a shank, - the valve seat has a concentric counterbore, - wherein the concentric counterbore has, in the direction of the inlet side of the valve seat, a conical surface, - and the concentric counterbore has, in the direction of the outlet side of the valve seat, a shank counterpart surface with a cylindrical form or a conical form with an angle of up to 6° inclination with respect to the axis of the valve seat, - wherein the cone-shaped end of the valve spindle tip seals off against the conical surface of the counterbore of the valve seat when the high-pressure valve is in the closed state, and the shank of the valve spindle tip forms a gap with the shank counterpart surface of the valve seat. - the valve spindle tip has a cone-shaped end and a shank, - the valve seat has a concentric counterbore, - wherein the concentric counterbore has, in the direction of the inlet side of the valve seat, a conical surface, - and the concentric counterbore has, in the direction of the outlet side of the valve seat, a shank counterpart surface with a cylindrical form or a conical form with an angle of up to 6° inclination with respect to the axis of the valve seat, - wherein the cone-shaped end of the valve spindle tip seals off against the conical surface of the counterbore of the valve seat when the high-pressure valve is in the closed state, and the shank of the valve spindle tip forms a gap with the shank counterpart surface of the valve seat.