| 摘要 |
The invention relates to a pressure-limiting device designed to be installed in a system comprising a first line and a second line that can comprise pressurised oil, as well as comprising a discharge and/or booster line. The device also comprises a pressure selector (150) and two pressure relief valves (160, 180). The limiting device is characterised in that the selector (150) comprises two separate valves (152, 156) and a resilient member (140) disposed between the closure members (154, 158) of the two separate selector valves, such that when the working pressure on the first and second lines is below a predetermined threshold, one of the selector valves (152, 156) is open and the other is closed, and when the working pressure on the first and second lines is above the predetermined threshold the two selector valves (152, 156) are closed. |
