進口帶止回電磁閥
進口帶止回電磁閥產(chǎn)品概述
美國沃克(WORK)主要用于下類工況:在正常工作的時候,電磁閥閥后的壓力可能比閥前的壓力高時,應(yīng)選帶止回功能電磁閥。
主要技術(shù)參數(shù)
公稱通徑:DN1—DN200,
連接方式:內(nèi)螺紋、法蘭,
閥體材質(zhì):鑄鋼、不銹鋼304、不銹鋼316,
適用用介質(zhì):空氣、燃氣、水等流體介質(zhì)
帶止回電磁閥溫度范圍:-196℃—0℃、-100℃—+20℃、-50℃—+50℃-20℃—+60℃、-5℃—+80℃、0℃—+120℃、0℃—+300℃、0℃—+600℃
帶止回電磁閥適用壓力:0—0.1MPa、-0.1MPa—0MPa,0.03-1.6MPa,0.03-5MPa、0.03-10MPa、0.05-50MPa、
帶止回電磁閥電壓:AC12V-AC380V、DC6V-DC220V
帶止回電磁閥泄漏等級:零泄漏
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工作原理
常閉:不通電的時候,電磁閥處于關(guān)閉狀態(tài);通電之后,電磁閥卸壓孔打開,主閥口由介質(zhì)的壓力推動打開;斷電之后,電磁閥關(guān)閉。
常開:不通電的時候,電磁閥處于打開狀態(tài);通電之后,電磁閥卸壓孔關(guān)閉,主閥口由介質(zhì)的壓力推動關(guān)閉;斷電之后,電磁閥打開。
注:用該電磁閥之后,如出現(xiàn)電磁閥閥后壓力大于閥前壓力,介質(zhì)也不會出現(xiàn)回流情況。
選型
a: 帶止回電磁閥的電源電壓,防爆,防護等級等技術(shù)參數(shù)
b: 帶止回電磁閥的工作方式
c: 帶止回電磁閥的壓力和溫度
d: 帶止回電磁閥的使用介質(zhì)(名稱、粘度、顆粒 腐蝕性、毒性)
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