Parker派克RE*W系列直動式比例溢流閥允許連續調整閥的zui低壓力至額定壓力。通常僅用于需要很小流量的液壓設備調節，或作為調節變量泵的先導閥。閥的電比例控制采用PCD00A-400數字放大板進行，并可用于壓力的閉環控制。
Parker派克VB*L系列直動式比例溢流閥可以對壓力從zui小至額定壓力進行連續地調節。典型的應用在：只需要少量油流的液壓調節裝置（例如：*的調整），或者作為變量泵的液壓調節機構的先導閥。閥的電氣控制采用插塞式放大器VS110或數字式放大器VRD350或VRD355，或者PCD模塊。同樣也可以在閉環壓力調節回路中使用。
PARKER電磁閥E 121K45 4811803D 483270C2
PARKER電磁閥E 121K4503 481180A2 483270C4
PARKER電磁閥E 121K46 481180C2 483270C5
PARKER電磁閥E 121K4603 4815303D 48333001N7
PARKER電磁閥E 121K63 481530A2 48337101C2
PARKER電磁閥E 121K64 481530C2 48337101C4
PARKER電磁閥121K6423 4818653D 483371A2
PARKER電磁閥E 121K65 481865A2 483371A4
PARKER電磁閥E 121K66 481865A4 4833710A
PARKER電磁閥121M13 481865A9 4833714K
PARKER電磁閥121M14 481865B2 483371C1
PARKER電磁閥121V0106 481865C1 483371C2
PARKER電磁閥121V0206 481865C2 483371C4
PARKER電磁閥121V03 481865C4 483371C5
PARKER電磁閥121V0306 481865C5 483371F4
PARKER4810000A 481865J3 48337105A2

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PARKER481000C4 4826067J 483510S6
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