选型依据：
一、根据管道参数选择电磁阀的：通径规格(即DN)、接口方式
1、按照现场管道内径尺寸或流量要求来确定通径(DN)尺寸。
2、接口方式，一般>DN50要选择法兰接口，≤DN50则可根据用户需要自由选择。
二、根据流体参数选择电磁阀的：材质、温度组
1、腐蚀性流体：宜选用耐腐蚀电磁阀和全不锈钢；食用超净流体：
宜选用食品级不锈钢材质电磁阀。
2、高温流体：要选择采用耐高温的电工材料和密封材料制造的电磁阀，
而且要选择活塞式结构类型的。
3、流体状态：大至有气态，液态或混合状态，
特别是口径大于DN25订货时一定要区分开来。
4、流体粘度：通常在50cSt以下可任意选择，若超过此值，则要选用高粘度电磁阀。
液动换向阀系列:DPHG-04,DPHG-06,DPHG-10. DPHG-04-3C2,
DPHG-04-2D2,DPHG-04-2B2, DPHG-06-3C2,DPHG-06-2D2,
DPHG-06-2B2, DPHG-10-3C2,DPHG-10-2D2,DPHG-10-2B2.
DPHG-04-3C3,DPHG-04-3*,DPHG-04-2B3, DPHG-06-3C3,
DPHG-06-3*,DPHG-06-2B3, DPHG-10-3C3,DPHG-10-3*,DPHG-10-2B3.
D4-02-2B2 D4-02-2B3 D4-02-2B4 D4-02-2B5 D4-02-2B6
D4-02-2B7 D4-02-2B8 D4-02-2B9 D4-02-2B10 D4-02-2B11
D4-02-2B12
D5-02-2B2 D5-02-2B3 D5-02-2B4 D5-02-2B5 D5-02-2B6
D5-02-2B7 D5-02-2B8 D5-02-2B9 D5-02-2B10 D5-02-2B11
D5-02-2B12
D4-02-3C2 D4-02-3C3 D4-02-3* D4-02-3C5 D4-02-3C6
D4-02-3C7 D4-02-3C8 D4-02-3C9 D4-02-3C10 D4-02-3C8
D4-02-3C12
D5-02-3C2 D5-02-3C3 D5-02-3* D5-02-3C5 D5-02-3C6
D5-02-3C7 D5-02-3C8 D5-02-3C9 D5-02-3C10 D5-02-3C11
D5-02-3C12
D4-03-2B2 D4-03-2B3 D4-03-2B4 D4-03-2B5 D4-03-2B6
D4-03-2B7 D4-03-2B8 D4-03-2B9 D4-03-2B10 D4-03-2B11
D4-03-2B12
D5-03-2B2 D5-03-2B3 D5-03-2B4 D5-03-2B5 D5-03-2B6
D5-03-2B7 D5-03-2B8 D5-03-2B9 D5-03-2B10 D5-03-2B11
D5-03-2B12
D4-0233C2 D4-03-3C3 D4-03-3* D4-03-3C5 D4-03-3C6
D4-03-3C7 D4-03-3C8 D4-03-3C9 D4-03-3C10 D4-03-3C8
D4-03-3C12
D5-03-3C2 D5-03-3C3 D5-03-3* D5-03-3C5 D5-03-3C6
D5-03-3C7 D5-03-3C8 D5-03-3C9 D5-03-3C10 D5-03-3C11
D5-03-3C12
电磁换向阀 D4-02-3C,D4-02-2B,D4-03-3C,D4-03-2B. D5-02-3C,D5-02-2B,
D5-03-3C,D5-03-2B. D4-02-3C-AC,D4-02-2B-AC,D5-02-3C-AC,
D5-02-2B-AC D4-03-3C-AC,D4-03-2B-AC,D5-03-3C-AC,D5-03-2B-AC
D4-02-3C-DC,D4-02-2B-DC,D5-02-3C-DC,D5-02-2B-DC D4-03-3C-DC,
D4-03-2B-DC,D5-03-3C-DC,D5-03-2B-DC D4-02-3C-AC-A01,D4-02-2B-AC-A01,
D5-02-3C-AC-A01,D5-02-2B-AC-A01 D4-03-3C-AC-A01,D4-03-2B-AC-A01,
D5-03-3C-AC-A01,D5-03-2B-AC-A01 D4-02-3C-DC-A01,D4-02-2B-DC-A01,
D5-02-3C-DC-A01,D5-02-2B-DC-A01 D4-03-3C-DC-A01,D4-03-2B-DC-A01,
D5-03-3C-DC-A01,D5-03-2B-DC-A01
电液换向阀 D4-04-3C2,D4-04-2B2,D4-06-3C2,D4-06-2B2,D4-10-3C2,
D4-10-2B2. D5-04-3C2,D5-04-2B2,D5-06-3C2,D5-06-2B2,D5-10-3C2,
D5-10-2B2. D4-04-3C3,D4-04-2B3,D4-06-3C3,D4-06-2B3,D4-10-3C3,
D4-10-2B3. D5-04-3C3,D5-04-2B3,D5-06-3C3,D5-06-2B3,D5-10-3C3,
D5-10-2B3. D4-04-3*,D4-04-2B8,D4-06-3*,D4-06-2B8,D4-10-3*,
D4-10-2B8. D5-04-3*,D5-04-2B8,D5-06-3*,D5-06-2B8,D5-10-3*,D5-10-2B8.
D4-04-3C-AC,D4-04-2B-AC,D4-06-3C-AC,D4-06-2B-AC,D4-10-3C-AC,D4-10-2B-AC,
D4-04-3C-DC,D4-04-2B-DC,D4-06-3C-DC,D4-06-2B-DC,D4-10-3C-DC,D4-10-2B-DC,
D5-04-3C-AC,D5-04-2B-AC,D5-06-3C-AC,D5-06-2B-AC,D5-10-3C-AC,D5-10-2B-AC,
D5-04-3C-DC,D5-04-2B-DC,D5-06-3C-DC,D5-06-2B-DC,D5-10-3C-DC,D5-10-2B-DC.
液动换向阀系列:DPHG-04,DPHG-06,DPHG-10. DPHG-04-3C2,DPHG-04-2D2,DPHG-04-2B2,
DPHG-06-3C2,DPHG-06-2D2,DPHG-06-2B2, DPHG-10-3C2,DPHG-10-2D2,DPHG-10-2B2.
DPHG-04-3C3,DPHG-04-3*,DPHG-04-2B3, DPHG-06-3C3,DPHG-06-3*,DPHG-06-2B3,
DPHG-10-3C3,DPHG-10-3*,DPHG-10-2B3.
