力士樂4WREE6W32-24/G24K31/A1V比例方向閥；閥對流量的控制可以分為兩種：
一種是開關(guān)控制：要么全開、要么全關(guān)，流量要么{zd0}、要么最小，沒有中間狀態(tài)，如普通的電磁直通閥、電磁換向閥、電液換向閥。
另一種是連續(xù)控制：閥口可以根據(jù)需要打開任意一個開度，由此控制通過流量的大小，這類閥有手動控制的，如節(jié)流閥，也有電控的，如比例閥、伺服閥。
所以使用比例閥或伺服閥的目的就是：以電控方式實(shí)現(xiàn)對流量的節(jié)流控制（當(dāng)然經(jīng)過結(jié)構(gòu)上的改動也可實(shí)現(xiàn)壓力控制等），既然是節(jié)流控制，就必然有能量損失，伺服閥和其它閥不同的是，它的能量損失更大一些，因?yàn)樗枰欢ǖ牧髁縼砭S持前置級控制油路的工作。

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力士樂4WREE6W32-24/G24K31/A1V比例方向閥

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R978912989 4WREE6V32-2X/G24K31/F1VSO43A-1639
力士樂REXROTH三位四通比例方向閥，直接操作、集成式放大版（OBE）4WREEM
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R987067798 4WREEM6E32J-2X/G24K34/B6V-687-SO280
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R901311217 4WREEM6W9-32-2X/G24K34/B6V

力士樂4WREE6W32-24/G24K31/A1V比例方向閥

電液比例閥簡稱比例閥普通液壓閥能通預(yù)調(diào)式液流壓力、流量進(jìn)行定值控制設(shè)備機(jī)構(gòu)工作程要求液壓系統(tǒng)壓力、流量參數(shù)進(jìn)行調(diào)節(jié)或連續(xù)控制例.要求工作臺工作進(jìn)給按慢、快、慢連續(xù)變化速度實(shí)現(xiàn)進(jìn)給或按定精度模擬某佳控制曲線實(shí)現(xiàn)旅力控制.普通液壓閥則實(shí)現(xiàn)用電液比例閥液壓系統(tǒng)進(jìn)行控制
    電液比例閥種按輸入電信號連續(xù)、按比例控制液壓系統(tǒng)液流向、流量壓力閥類山電-機(jī)械比例轉(zhuǎn)換裝置液壓控制閥本體兩部構(gòu).前者輸入電信號連續(xù)按比例轉(zhuǎn)換機(jī)械力位移輸者接受種機(jī)械力位移、按比例連續(xù)輸壓力流量.

力士樂4WREE6W32-24/G24K31/A1V比例方向閥

力士樂REXROTH二位四通和三位四通比例方向閥直控式，閥芯帶位移電反饋，帶集成式放大版（OBE）4WREE
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R900246469 4WREE6W04-2X/G24K31/A1V
R900967564 4WREE6W04-2X/G24K31/F1V
R900923000 4WREE6W08-2X/G24K31/A1V
R901278020 4WREE6W08-2X/G24K31/A1V-280
R901354748 4WREE6W08-2X/G24K31/F1M
R900924283 4WREE6W08-2X/G24K31/F1V
R900929827 4WREE6W1-08-2X/G24K31/A1V
R901003235 4WREE6W1-08-2X/G24K31/A1V-280
R901354749 4WREE6W1-08-2X/G24K31/F1M
R900965071 4WREE6W1-08-2X/G24K31/F1V
R901394157 4WREE6W1-16-2X/G24K31/A1M
R900939627 4WREE6W1-16-2X/G24K31/A1V
R901154928 4WREE6W1-16-2X/G24K31/A1V-280
R901421940 4WREE6W1-16-2X/G24K31/F1M
R900937065 4WREE6W1-16-2X/G24K31/F1V
R901368371 4WREE6W1-32-2X/G24K31/A1M
R900913359 4WREE6W1-32-2X/G24K31/A1V
R901362947 4WREE6W1-32-2X/G24K31/A1V-660
R901354752 4WREE6W1-32-2X/G24K31/F1M
R900933476 4WREE6W1-32-2X/G24K31/F1V
R900925657 4WREE6W16-2X/G24K31/A1V
R901048039 4WREE6W16-2X/G24K31/A1V=LB
R901362073 4WREE6W16-2X/G24K31/F1M
R900950416 4WREE6W16-2X/G24K31/F1V
R900929205 4WREE6W2-32-2X/G24K31/A1V

力士樂4WREE6W32-24/G24K31/A1V比例方向閥