原理：通電時，電磁力把先導孔打開，上腔室壓力迅速下降，在關 閉件周圍形成上低下高的壓差，流體壓力推動關閉件向上移動，閥門打開；斷電時，彈簧力把先導孔關閉，入口壓力通過旁通孔迅速腔室在關閥件周圍形成下低上高的壓差，流體壓力推動關閉件向下移動，關閉閥門。
GSR先導閥是一種先導閥與主閥兩者間相互的閥體當電磁閥線圈通電，動鐵芯與靜鐵芯吸合使導閥孔開放，閥芯背腔的壓力通過導閥孔流向出口，此時閥芯背腔的壓力低于進口壓力，利用壓差使閥芯脫離主閥口，介質(zhì)從進口流向出口。當線圈斷電，動鐵芯與靜鐵芯脫離，關閉了導閥孔，閥芯背腔壓力受進口壓力的補充逐漸趨于和進口平衡，閥芯因彈簧力作用下把閥門緊密關閉。 特點：功率消耗低、通徑較大，而結(jié)構(gòu)簡單、安裝方向任意，但只能用于電磁閥兩端有一定壓差的場合，主要應用在汽車，電廠，鋼廠，船廠等行業(yè)
原裝正品德國GSR氣動閥現(xiàn)貨
1）GSR與固定液阻組成先導控制液橋，根據(jù)輸入信號對主閥或次級閥或變量杠進行控制；
2）GSR首級先導閥的流量一般都只在1升/分左右，zui大3升/分。二級先導閥流量就要根據(jù)實際需要決定。
3）GSR輸入信號都比較?。?/p>
4）GSR可以接受多種輸入方式，如手動、電動、液動、氣動、機械凸輪、電比例等；
5）GSR在變量泵控制等情況，多種先導閥形成模塊化結(jié)構(gòu)，多種功能取舍方便；
6）GSR先導閥本身往往就是一種小規(guī)格控制閥，多為壓力控制閥。
原裝正品德國GSR氣動閥現(xiàn)貨
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