Patent ID: 7243902

Claim:
In a valve for high-pressure hydraulics, comprising a valve bore ( 3 ), provided in a valve housing ( 2 ), in which bore at least one valve seat ( 5 ; 19 ; 23 ) is embodied that divides a guide ( 8 ) on the high-pressure side of the valve bore ( 3 ) from a guide ( 12 ) on the low-pressure side of the valve bore ( 3 ), and a valve needle ( 1 ) actuatable directly by an actuator ( 4 ), which needle is guided in the valve bore ( 3 ) and has at least one sealing face ( 9 ; 28 ), which can cooperate with the at least one valve seat ( 5 ; 19 ; 23 ), the improvement wherein the valve needle ( 1 ) is constructed in multiple parts and, in the region of the guide ( 12 ) on the low-pressure side, has at least one sleeve ( 13 ; 21 , 22 ; 24 , 25 ), wherein the at least one sleeve ( 13 ; 21 , 22 ; 24 , 25 ) is axially braced at one end, and further comprising a chamfer ( 17 ) on an end of the at least one sleeve ( 13 ; 21 , 22 ; 24 , 25 ) which is disposed opposite to the one end, and a snap ring ( 16 ) disposed in the chamfer ( 17 ) and in a groove on the valve needle ( 1 ).