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单向阀是流体只能沿进水口流动，出水口介质却无法回流，俗称单向阀。单向阀又称止回阀或逆止阀。用于

液压系统中防止油流反向流动,或者用于气动系统中防止压缩空气逆向流动。单向阀有直通式和直角式两种

。直通式单向阀用螺纹连接安装在管路上。直角式单向阀有螺纹连接、板式连接和法兰连接三种形式。
单向阀又称止回阀或逆止阀。用于液压系统中防止油流反向流动,或者用于气动系统中防止压缩空气逆向流

动。
单向阀有直通式和直角式两种。直通式单向阀用螺纹连接安装在管路上。直角式单向阀有螺纹连接、板式连

接和法兰连接三种形式。液控单向阀也称闭锁阀或保压阀，它与单向阀相同，用以防止油液反向流动。但在

液压回路中需要油流反向流动时又可利用控制油压，打开单向阀，使油流在两个方向都可流动。液控单向阀

采用锥形阀芯，因此密封性能好。在要求封闭油路时，可用此阀作为油路的单向锁紧而起保压作用。液控单

向阀控制油的泄漏方式有内泄式和外泄式二种。在油流反向出口无背压的油路中可用内泄式；否则需用外泄

式，以降低控制油压力。

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4WRPEH6C3B12L-2X/G24K0/F1MREXROTH
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力士乐液控单向阀SV30PA3-42  R900599890
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减压阀R900410849 ZDR6DA2-4X/150Y REXROTH
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力士乐液控单向阀SV30PA3-42  R900599890
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力士乐液控单向阀SV30PA3-42  R900599890

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力士乐液控单向阀SV30PA3-42  R900599890
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