Z2S6-2-6X力士乐单向阀 德国博世力士乐REXROTH单向节流阀

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Z2S6-2-6X力士乐单向阀

安装位置

单向阀就是止回阀 旋启式止回阀安装位置不受限制，通常安装于水平管路，但也可以安装于垂直管路或倾斜管路上。

注意事项

安装单向止回阀时，应特别注意介质流动方向，应使介质正常流动方向与阀体上指示的箭头方向相一致，否则就会截断介质的正常流动。底阀应安装在水泵吸水管路的底端。

止回阀关闭时，会在管路中产生水锤压力，严重时会导致阀门、管路或设备的损坏，尤其对于大口管路或高压管路，故应引起止回阀选用者的高度注意。

止回阀只供防止各类管路或设备上流体介质逆流的单向启闭阀。

技术参数

公称通径:21/16“~41/16“

工作压力：2,000~15,000PSI

温度：-60�C~ 121�C(K,U)

产品规范级别：PSL3~4

产品性能级别：PR1~2

材料级别：AA~FF

单向阀是气流只能一个方向流动而不能反向流动的方向控制阀。其工作原理与液压单向阀一样。压缩空气从P口进入，克服弹簧力和摩擦力使单向阀阀口开启，压缩空气从P流至A；当P口无压缩空气时，在弹簧力和A口(腔)余气力作用下；阀口处于关闭状 态，使从A至P气流不通。单向阀应用于不允许气流反向流动的场合，如空压机向气罐充气 时，在空压机与气罐之间设置一单向阀，当空压机停止工作时，可防止气罐中的压缩空气回流 到空压机。单向阀还常与节流阀、顺序阀等组合成单向节流阀、单向顺序阀使用。

型号SV和SL阀是锥阀结构的液控单向阀，它可在关闭方向开启而让油液自由流动。

此类阀用于有液压回路部分的隔离，当管路破裂时，作为防止负载失压的安全措施，或避免执行器在液压闭锁时的爬行或漂移。

其组成主要包括阀体、阀芯 、压缩弹簧和控制活塞和一个可选的释压球阀。

型号SV...

油液可以由A至B自由流动。在相反方向，阀芯被压缩弹簧和系统压力牢固的保持在其阀座上。

通过向控制口X提供压力，控制活塞被推向右侧。这样阀芯离开阀座，油液由B至A流动。

为了确保阀开启，需要一定的低控制压力作用于控制活塞上

为了确保通过施加到控制阀芯上压力阀能打开，要求一定的小先导压力

型号SV..A..和SL..A.. (带卸压功能，)

该阀有一个附加的印载机构，当向X口提供控制压力时，控制活塞被推向右侧。它首先推开球阀芯，然后主阀芯离开其阀座。这样，油液从B流向A,从而避免可能的压力冲击。

由于这种预开启特征，可以实现缸中受压液体的平稳释压。

型号SL..

此阀的功能与SV型相同。

不同之处在于增加了泄油口Y。此处控制活塞 的环形面积与A口隔离。来自A口的压力只作用于控制活塞 的面积A_上。

单向阀供应型号

力士乐REXROTH叠加式液控单向阀Z2S 6

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力士乐REXROTH叠加式液控单向阀Z2S 10

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