比例方向閥，直動式，有集成控制電氣元件（OBE），帶電位置反饋和閥芯位置監測
規格6和10
安裝面按ISO4401
控制流量的方向和大小
比例電磁鐵操作
對中彈簧控制閥芯
可選階躍補償
型號 KKDS
2/2比例方向閥，直動式（高性能）
規格1
直動式比例閥，用于控制流量大小
通過比例電磁鐵(帶中心螺紋和可拆卸線圈)進行控制
電磁鐵線圈可轉動
雙向流量控制
帶隱藏的輔助操作裝置，可選擇

Wei Shan， a small town in Yunnan， was stricken by drought around a thousand year ago. For a town which used to enjoy the mild weather all year along， the drought was completely unbearable. Unexpected and unprepared， the residents， mainly from Yi people， were desperate for food. To search for it， Xi Nu Luo， who later became the chieftain of Nanzhao， a regime in Yunnan province， went hunting with a group of young men. Before entering the forest， they were told that the wildfire had spread the forest due to the drought. As a result， the boars， which they were intended to catch，