德國力士樂直動式比例減壓閥：R900958788 3DREPE6C-2X=25EG24N9K31/A1M=00現(xiàn)貨銷售
功能：
通過比例電磁鐵設(shè)置 A 或 B 中的壓力。壓力的大小取決于電流。線圈（5、6）斷電后，控制閥芯 (2) 將通過壓縮彈簧 (8) 保持在中心位置。油口 A 和 B 連接到 T，以便液壓油可以不受阻擋地流入油箱。通過為比例電磁鐵（例如線圈“a”(5)）通電，壓力測量閥芯 (3) 和控制閥芯 (2) 將向右移動。這樣將通過具有漸進流體特性的節(jié)流橫截面，打開從 P 到 B 及從 A 到 T 的連接。在通道 B 中形成的壓力通過壓力測量閥芯 (4) 的表面作用于控制閥芯，抵抗線圈磁力。壓力測量閥芯 (4) 受線圈“b”支撐。如果壓力超過線圈“a”上設(shè)置的值，將逆線圈磁力方向回推控制閥芯 (2)，并建立 B 與 T 的連接，直到重新達到調(diào)定壓力。
壓力與線圈電流成比例。當線圈關(guān)閉時，控制閥芯 (2) 在壓縮彈簧 (8) 的作用下返回到中心位置?？蛇x手動應(yīng)急操作元件（9、10）可在線圈不通電的情況下移動控制閥芯 (2)。
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