美国Parker派克电磁换向阀的性能：
换向性能：在规定的工作条件下，电磁阀通电后能否可靠地换向，断电后能否可靠地复位。
压力损失：电磁换向阀的压力损失由液流流过电磁换向阀的阀口时产生的流动损失和节流损失组成。
内泄露量：电磁换向阀的内泄露量是指在规定的工作条件下，处于各个不同工作位置时，从高压腔到低压腔的泄露量。
换向和复位时间：从电磁铁通电到阀芯换向终止所需要的时间，复位时间是指从电磁断电到阀芯回复到初始位置所需要的时间。
换向频率：在单位时间内所允许的zui大换向次数
使用寿命：电磁阀使用到主要零部件损坏，不能进行正常的换向和复位动作，或者使用到其主要性能指标明显恶化超过了规定指标所经历的换向次数派克电磁换向阀D1VW020系列是用电磁铁的吸力来推动阀芯运动以变换流体流动方向的控制阀，简称电磁阀，通常有滑阀和球阀两种结构，通常所说的电磁换向阀为滑阀结构，称球状或锥状阀芯的电磁换向阀为电磁换向座阀，也称电磁球阀。
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