| 摘要 |
A fluid pressure regulating unit (1, 28, 35, 56, 58), comprises a fluid inlet port (3), a fluid outlet port (4), a valve means (6) and a main valve biasing means (14, 36). The main valve biasing means (14) biases said valve means (6) in the direction of an open position. An auxiliary valve biasing means (26) is provided, biasing the valve means (6) in the direction of a closed position.
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