ASCO電磁閥雙電控防爆電磁閥，EFG551A002MS當(dāng)入口與出口沒有壓差時，通電后，電磁力直接把先導(dǎo)小閥和主閥關(guān)閉件依次向上提起，閥門打開。當(dāng)入口與出口達(dá)到啟動壓差時，通電后，電磁力先導(dǎo)小閥，主閥下腔壓力上升，上腔壓力下降，從而利用壓差把主閥向上推開。

       要求必須水平安裝。先導(dǎo)式電磁閥：原理：通電時，電磁力把先導(dǎo)孔打開，ASCO電磁閥雙電控防爆電磁閥，EFG551A002MS上腔室壓力迅速下降，在關(guān)閉件周圍形成上低下高的壓差，流體壓力推動關(guān)閉件向上移動，閥門打開；斷電時，彈簧力把先導(dǎo)孔關(guān)閉，入口壓力通過旁通孔迅速腔室在關(guān)閥件周圍形成下低上高的壓差，流體壓力推動關(guān)閉件向下移動，關(guān)閉閥門。

EF8320G200   8210G15       8316G64      8342G001
8210G009     EF8300D61     NFB307C79    SCXB307B075
12500001     8210G88       EF8327G42    EV8316G84V 
NFB307B05F   NF8327B001    NFB327A002   NFB307078
NFB307021    NFB307C79     10700208     8210G88
55100004     55102005      55102011     EF8300D61U
43004158     52100008      SCG353A047   EF8342G1
55100004     EF8316G304    EF8344G374   8320G182V
52000004     EV8316G38V   JBEF8210G088  JBEF8210G089
NF8553A317MO NFB327A112    NFG551A309   NFXB316A309
8210G009     WPHTB344A074  EF8210G14    30400008

55192005     E238A207      34207093     EF8025B224
HT8316G074   12100309      34203086     8345G1
19200001     8210G13       8321G1       EF8300D61U
SCG531B001MS 8262G80M0     EF8320G188   EF8342C1
43550447     55192009      55192011     EV8316G82
8210G037     SCXG327A001   EF8210G088   EF8342G3MS
SCG353A047   SCG353A051    8320G10      NB327A001
8215G2       8342G703      SCB307B065F  SCG553A005MS
NFB307B065   WT8511A1MS    HT8316G66    EF8342G1MS
K303116      HB8316G074    HB8320G174   13100199
88100144     35500076      54191023     54291023
8266D26V     55192011      HB8316D15VMB HB8316G16VMB
8210G94      8320G83       54190883     SCE238A009