現(xiàn)貨美國派克PARKER電磁閥P2FCB440美國空運上海港
1、電磁閥從原理上分為三大類：
1）直動式電磁閥：
原理：通電時，電磁線圈產(chǎn)生電磁力把關(guān)閉件從閥座上提起，閥門打開；斷電時，電磁力消失，彈簧把關(guān)閉件壓在閥座上，閥門關(guān)閉。
特點：在真空、負壓、零壓時能正常工作，但通徑一般不超過25mm。
2）分步直動式電磁閥：
原理：它是一種直動和先導(dǎo)式相結(jié)合的原理，當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。當入口與出口達到啟動壓差時，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；斷電時，先導(dǎo)閥利用彈簧力或介質(zhì)壓力推動關(guān)閉件，向下移動，使閥門關(guān)閉。
特點：在零壓差或真空、高壓時亦能可*動作，但功率較大，要求必須水平安裝。
3）先導(dǎo)式電磁閥：
原理：通電時，電磁力把先導(dǎo)孔打開，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。
特點：流體壓力范圍上限較高，可任意安裝（需定制）但必須滿足流體壓差條件。
2、電磁閥從閥結(jié)構(gòu)和材料上的不同與原理上的區(qū)別，分為六個分支小類：直動膜片結(jié)構(gòu)、分步直動膜片結(jié)構(gòu)、先導(dǎo)膜片結(jié)構(gòu)、直動活塞結(jié)構(gòu)、分步直動活塞結(jié)構(gòu)、先導(dǎo)活塞結(jié)構(gòu)。
3、電磁閥按照功能分類：水用電磁閥、蒸汽電磁閥、制冷電磁閥、低溫電磁閥、燃氣電磁閥、消防電磁閥、氨用電磁閥、氣體電磁閥、液體電磁閥、微型電磁閥、脈沖電磁閥、液壓電磁閥 常開電磁閥、油用電磁閥、直流電磁閥、高壓電磁閥、防爆電磁閥等。
現(xiàn)貨美國派克PARKER電磁閥P2FCB440美國空運上海港
CRN150
CRN300
P5WCM10NMN0190B
P5WCM12NMN0190B
P5WCM63NMN0190B
MC10MH
TK10M-6-1
MC75M-3-NB-111
MC150MH2
MC225MH2
MC600MH2
P5WCM10B
P5WCM12B
P5WCM20B
P8S-SPFL3
P8S-SPNFL3
P8S-SPSH3
P8S-SNSH3
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P2F13N4C
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DX1-421-60
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DX1-621-B619
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DX1-611-B619
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DX1-616-B219
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DX1-613-B219
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DX1-621-B219
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HBEBG2G9000FA
HAEBG2G9000FA
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PL02-01-70
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PJLP02-201-70
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P2FCA445
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P2FCA440
P2FCA469#
P2FCA447
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P2FC6419
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P2FNP
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P8C-C
P8C-C26C
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P8C-D
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P8C-D21E
P8C-C2
P8C-C5
P8C-C226C
P8C-CA26C
P8C-C221E
P8C-C521E
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