力士乐流量控制阀R900205515 2FRM6B36-3X/32QRV

力士乐流量控制阀R900205515 2FRM6B36-3X/32QRV

我司主要经销气动，液压，工控自动化流体控制设备备品备件

主营品牌：博世力士乐BOSCH-REXROTH、安沃驰AVENTICS、迪普马DUPLOMATIC、爱尔泰克AIRTEC、本特利Bently、贝加莱B&R、世格ASCO、阿托斯ATOS。

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流量阀的作用是在阀的进出口压差变化的情况下，利用调节阀芯和阀体间的节流口面积和它所产生的局部阻力对流量进行调节，从而控制执行元件的运动速度。维持通过的流量恒定，从而维持与之串联的被控对象(如一个环路、一个用户、一台设备等，下同)的流量恒定。管网中应用流量阀，可直接根据设计来设定流量，阀门可在水压作用下，自动消除管线的剩余压头及压力波动所引起的流量偏差。流量阀的名称较多，如自力式流量平衡阀、定流量阀、动态平衡阀等。各种类型的流量阀，结构各有不同，但工作原理相似。

4工作原理

流量阀是由一个手动调节阀组和一个自动平衡阀组组成。调节阀组作用是设定流量，自动平衡阀组作用是维持流量恒定。系统流体的工作压力为P1，手动调节阀的前后压力分别为P2、P3。当手动调节阀调到某一位置时，即人为确定了“设定流量”Kv即手动调节阀的流量系数，流量G=Kv（P2-P3），Kv为，Kv设定后，只要P2－P3不变，则流量G不变。当系统流量增大时，(P2—P3)的实际值超过了允许的给定值，此时通过感压膜和弹簧作用使自动调节阀组自动关小，直至流量重新维持到设定流量，反之亦然。

流量阀自动调节流量的有效范围取决于工作弹簧的性能。一般流量阀前后压差在20—300kPa的范围内能按设定值有效控制流量。当压小于20kPa时，控制流量达不到设定值；压差超过300kPa时，可能产生噪音。

力士乐REXROTH比例二通流量控制阀2FRE 6

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力士乐REXROTH比例二通流量控制阀2FRE

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力士乐REXROTH比例流量控制阀，无位置反馈功能3(2)FREX

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力士乐REXROTH带感应位置传感器的比例流量控制阀3FREZ

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力士乐REXROTH比例流量控制阀，配有内置集成电子放大版（OBE）和电感式位置传感器3FREEZ

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力士乐REXROTH比例流量控制阀，带有集成压力补偿器KUDSR

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力士乐REXROTH方向控制阀

力士乐REXROTH高响应换向阀，直接操作

力士乐REXROTH高响应方向阀，直动式、电气位置反馈和集成电子放大版（OBE）4WRPE

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力士乐REXROTH带电气位置反馈的高响应阀（LVDT的直流/直流±10 V）4WRPH 6

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力士乐REXROTH伺服电磁阀，带电气位置反馈（LVDT的直流/直流±10 V）4WRPH 10

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