| 摘要 |
The hydraulic valve has a casing (16) with a first (18), second (20) and third (22) recess. Hydraulic fluid can be fed into the first recess, fed from the second recess to a pressure consumer and from the third recess to a pressure sink. A valve body (12) can move from a first position, in which fluid flows from the first to the second recess, to a second position in which it flows from the second to the third recess. The cross-section of flow of fluid leaving the first recess is kept constant, then increased to a maximum value by the time the valve body reaches the second position. |
