特點：
1、MAC新線圈的、橢圓的磁鐵通過芯有更多的磁力—出力大
2、平衡式的設計、不受進氣壓力的變化影響—出力大
3、平衡式提動閥、閥桿上無其它軸封—無磨擦
4、很強的彈簧回力、在低壓時有足夠的回位力—出力大
5、氣孔面積為0.0024IN2-不易堵塞
6、高出力、短行程-反應速度快
7、短行程、錐形排氣底座設計、減少撞擊-壽命長
8、零部件少、設計簡單-故障少

美國MAC先導式三通閥
4-AA1-DAAA-1BA
4-AA1-DAAA-1BA
4-AA1-DAAA-1CA
4-AA1-DAAA-1CM
4-AA1-DAAJ-1JB
4-AA1-DAAJ-1JB
4-AA1-DAAJ-1JD
4-AA1-DAAJ-1JM
4-AA1-DAAJ-1KA
4-AA1-DAAJ-1KA
4-AA1-DAAJ-1KA
4-AA1-DAAJ-1KD
4-AA1-DAAJ-1KJ
4-AA1-DAAJ-2KA
4-AA1-DAAJ-2KA
4-AA1-DAAS-1BA
4-AA1-DACA-1BA
4-AA1-DACJ-1KA
4-AA1-DDAA-1BA
4-AA1-DDAA-1BA
4-AA1-DDAA-1BK
4-AA1-DDAA-1CA
4-AA1-DDAA-1CM
4-AA1-DDAC-1BA
4-AA1-DDAJ-1BA
4-AA1-DDAJ-1JB
4-AA1-DDAJ-1JD
4-AA1-DDAJ-1JM
4-AA1-DDAJ-1KA
4-AA1-DDAJ-1KA
4-AA1-DDAJ-1KD
4-AA1-DDAJ-1KD
4-AA1-DDAJ-1KE
4-AA1-DDAJ-1KE
4-AA1-DDAJ-1KJ
4-AA1-DDAJ-1PA
4-AA1-DDAJ-2KA
4-AA1-DDAJ-2KA
4-AA1-DDBA-1BA
4-AA1-DDBA-1BA
4-AA1-DDFD-1BA
4-AA1-DDFJ-1JB
4-AA1-DDMA-1BA
4-AA1-DFBA-1BA
4-AA1-DFBA-1BA
4-AA1-DFBJ-1KA
4-AA1-DFBJ-1KD
4-AA1-DFFJ-3JM
4-AA1-DFRJ-1KA-FM
4-AA2-DAAA-1BA
4-AA2-DAAA-1CA
4-AA2-DAAA-1CM
4-AA2-DAAJ-1JD
4-AA2-DAAJ-1JM
4-AA2-DAAJ-1KA
4-AA2-DAAJ-4KA
4-AA2-DDAA-1BA
4-AA2-DDAA-1CA
4-AA2-DDAJ-1JD
4-AA2-DDAJ-1KA
4-AA2-DDAJ-1KD
4-AA2-DDAJ-2KA
4-AA2-DDBA-1BA
4-AA2-DDCA-1BA
4-AA2-DFAA-1BA
4-AC1-DAAJ-1KA
4-AC1-DDAJ-1KE
4-AC1-DDFJ-1KA
4-BA1-DDCA-1BA
4-BA1-DFBJ-1KD
4-BA1-RA11
4-BA1-RA11
4-DH2-DAAA-1BA
4-DH2-DDAA-1BA
4-FA1-DAAA-1CM
4-FA1-DDAA-1BA
4-FA1-DDAJ-1KJ
4-FA1-DDFA-1BA
4-GA1-DDAJ-1KJ
4-GA1-RA11
4-GA2-DAAJ-1JB
4-GA2-DAAJ-1JM
4-L00-DAAA-1BA
4-L00-DAAB-4BA
4-L00-DAAC-4BA
4-L00-DAAJ-1KA
4-L00-DAAJ-1KD
4-L00-DAAJ-1KJ
4-L00-DAAJ-1KJ
4-L00-DAAJ-3FM
4-L00-DACA-1CA
4-L00-DDAA-1BA
4-L00-DDAA-1CM
4-L00-DDAC-4BA
4-L00-DDAJ-1FM
4-L00-DDAJ-1KA
4-L00-DDAJ-1KD
4-L00-DDAJ-1KJ
4-L00-DDAJ-1KJ
4-L00-DDAJ-2TE
4-L00-DDDJ-1FM
4-L00-DDDJ-1FN
4-L00-DDFA-1BA
4-L00-DDFJ-1KD
4-L00-DEWJ-1JM
4-L00-DFBJ-1FM
4-L00-DFBJ-1KJ
4-L00-DFFJ-3JM
4-L00-DGFJ-0FM
4-LAA-DAAJ-1KD
4-LAA-DDFJ-1KD
4-LAC-DAAA-1BA
4-LAC-DAAC-1BA
4-LAC-DAAJ-1KA
4-LAC-DAAJ-1KA
4-LAC-DAAJ-1KD
4-LAC-DAAJ-1KD
4-LAC-DAAJ-4KD
4-LAC-DACJ-1KA
4-LAC-DDAA-1BA
4-LAC-DDAC-1BM
4-LAC-DDAJ-1KA
4-LAC-DDAJ-1KA
4-LAC-DDAJ-1KB
4-LAC-DDAJ-1KD
4-LAC-DDAJ-1KD