原理：通电时，电磁力把先导孔打开，上腔室压力迅速下降，在关闭件周围形成上低下高的压差，流体压力推动关闭件向上移动，阀门打开；断电时，弹簧力把先导孔关闭，入口压力通过旁通孔迅速腔室在关阀件周围形成下低上高的压差，流体压力推动关闭件向下移动，关闭阀门。3V110-06,3V110-08,3V110-10,3V110-15,3V210-06,3V210-08,3V210
-10,3V210-15,3V220-06,3V220-08
3V220-10,3V220-15,3V230-06,3V230-08,
3V310-10,3V310-15,3V320-06,3V320-08
3V320-10,3V320-15,3V330-06,3V330-08,
3V330-10,3V330-15,3V410-06,3V410-08,
3V410-10,3V410-15,3V420-06,3V420-08
3V420-10,3V420-15,3V430-06,3V430-08,
3V430-10,3V430-15,4V130-06P,
4V130-06,4V130-06D,4V130-06AC110V,4V130-08
4V130-10,4V130-15，4V120-06,4V120-08,
4V120-10,4V120-15,4V110-06,4V110-08
4V110-10,4V110-15,4V210-06,4V210-08
3V230-10,3V230-15,3V310-06,3V310-08,
