原理：它是一种直动和先导式相结合的原理，当入口与出口没有压差时，通电后，电磁力直接把先导小阀和主阀关闭件依次向上提起，阀门打开。当入口与出口达到启动压差时，通电后，电磁力先导小阀，
台湾JianHui电磁阀部分型号如下
10通经G03
DWH-G03-C2-D24-20,DWH-G03-C4-D24-20,DWH-G03-C6-D24-20,DWH-G03-C60-D24-20,
DWH-G03-C2-ADWH-G03-C4-ADWH-G03-C6-ADWH-G03-C60-A240-20
DWH-G03-C2-ADWH-G03-C4-ADWH-G03-C6-ADWH-G03-C60-A
DWH-G03-C2-ADWH-G03-C4-ADWH-G03-C6-ADWH-G03-C60-A120-20
DWH-G03-C2-ADWH-G03-C4-A110-20 DWH-G03-C6-ADWH-G03-C60-A110-20
DWH-G02-C2-ADWH-G02-C4-ADWH-G02-C6-ADWH-G02-C60-A110-10
DWH-G03-C2-D24-10,DWH-G03-C4-D24-10,DWH-G03-C6-D24-10,DWH-G03-C60-D24-10,
DWH-G03-C2-ADWH-G03-C4-ADWH-G03-C6-ADWH-G03-C60-A240-10
DWH-G03-C2-ADWH-G03-C4-ADWH-G03-C6-ADWH-G03-C60-A220-10
DWH-G03-C2-ADWH-G03-C4-ADWH-G03-C6-ADWH-G03-C60-A120-10
DWH-G03-C2-ADWH-G03-C4-ADWH-G03-C6-ADWH-G03-C60-A110-10
DWH-G03-B2-D24-20,DWH-G03-D2-D24-20,DWH-G03-C3-D24-20,DWH-G03-B3-D24-20,
DWH-G03-B2-ADWH-G03-D2-ADWH-G03-C3-ADWH-G03-B3-A
DWH-G03-B2-ADWH-G03-D2-ADWH-G03-C3-ADWH-G03-B3-A
DWH-G03-B2-ADWH-G03-D2-ADWH-G03-C3-ADWH-G03-B3-A
DWH-G03-B2-ADWH-G03-D2-ADWH-G03-C3-ADWH-G03-B3-A
