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调压阀基本可以说是减压阀，减压阀的工作原理如下：高压介质通过一个小孔充到一个相对较大的腔里实现减压，实际上是靠截流减压，膜片或活塞的两面一面是出口腔，一面是人为给的压力，并且控制小孔大小的阀杆和膜片(活塞)相连，这样只要给一个固定的压力，那么出口腔的压力就会一直等于这个压力，这个认为给定的压力可以有弹簧或气源或液压源来提供。
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PV270R1K1T1NWLZ+PVAC1ECM
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