英國(guó)NORGREN脈沖閥8296700.8171.23050

空氣處理設(shè)備（各種過(guò)濾器、調(diào)壓閥、三聯(lián)件等）；

自保持型電磁闊：自保持型電磁就是只需瞬間通電即完成閥門(mén)開(kāi)關(guān)動(dòng)作,閥芯位置不需電來(lái)保持。它的優(yōu)點(diǎn)在于節(jié)約能源尤其是用電池作電源的場(chǎng)合，而且可不考慮溫升，從而線圈壽命長(zhǎng)，在高低溫、防爆等場(chǎng)合有較高性。常見(jiàn)的有機(jī)械式保持和永磁體保持，又分雙線圈和單線圈，以單線圈磁保持結(jié)構(gòu)為簡(jiǎn)單。它是以改變直流電源極性改變對(duì)應(yīng)閥門(mén)開(kāi)關(guān)的兩種狀態(tài)。這種電磁單獨(dú)安裝線圈外部接線需加轉(zhuǎn)換開(kāi)關(guān)，而與智能儀表配套則十分方便。費(fèi)煤氣表和水表所配的電磁是儀表成敗的關(guān)鍵之一，其中的自保持技術(shù)又是電磁的成敗的重要因素，國(guó)內(nèi)的自保持電磁已日趨成熟

8296700.8171.23050，

8296700.8171.02400

8296600.8171.23050

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