派克PARKER比例换向阀
PARKER派克比例换向阀通过调节输入阀内电磁铁的电压信号来控制工作阀阀芯的移动，使阀口尺寸发生改变，从而完成与输入电压成比例的压力、流量输出的控制，改阀具有集成的电子元件，主级的阀芯位置可调。
派克PARKER比例换向阀、派克PARKER比例方向控制阀D1DW系列是一种5油腔电控式3位4 通或2位4通滑阀或换向阀。换向阀通过带有螺纹衔铁管的湿式换向电磁铁进行直接操纵。
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D3DW系列5油腔阀
D3DW是一种5油腔、电控、3位4通或2位4通滑阀或换向阀，通过带有螺纹衔铁管的湿式电磁铁进行直接操纵换向。
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