| 摘要 |
PURPOSE:To provide a constant supplying direction for a high pressure fluid by connecting two pressure sources and two passages, where the pressure varies relatively, by the use of direction selector valve operated by the pressure difference from the pressure sources. CONSTITUTION:Pressure source 1, 2, whose pressure vary relatively, are connected with a high pressure fluid supply line 7 and a low pressure fluid collecting line 9 through a direction selector valve 3 which is operated by the pressure difference between said sources 1, 2. Thereby the high pressure fluid supply line 7 is always fed with the fluid from the currently higher source however their pressures vary owing to said direction selector valve 3, so that the supply direction of high pressure fluid can be held constant.
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