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美國仙童FAIRCHILD減壓閥
仙童減壓閥，美國FAIRCHILD仙童電磁閥的工作原理，是氣動調節(jié)閥的一個*配件，主要作用是將氣源的壓力減壓并穩(wěn)定到一個定值，以便于調節(jié)閥能夠獲得穩(wěn)定的氣源動力用于調節(jié)控制。按結構形式可分為薄膜式、彈簧薄膜式、活塞式、杠桿式和波紋管式；按閥座數(shù)目可人為單座式和雙座式；按閥瓣的位置不同可分為正作用式和反作用式。
FAIRCHILD仙童減壓閥可將閥前管路較高的水壓減少至閥后管路所需的水平。減壓閥廣泛用于高層建筑、城市給水管網(wǎng)水壓過高的區(qū)域、礦井及其他場合，以保證給水系統(tǒng)中各用水點獲得適當?shù)姆账畨汉土髁俊ｈb于水的漏失率和浪費程度幾乎同給水系統(tǒng)的水壓大小成正比，因此減壓閥具有改善系統(tǒng)運行工況和潛在節(jié)水作用，據(jù)統(tǒng)計其節(jié)水效果約為30％。
減壓閥的構造類型很多，以往常見的有薄膜式、內彈簧活塞式等。減壓閥的基本作用原理是靠閥內流道對水流的局部阻力降低水壓，水壓降的范圍由連接閥瓣的薄膜或活塞兩側的進出口水壓差自動調節(jié)。2007年以來又出現(xiàn)一些新型減壓閥，如定比式減壓閥。定比減壓原理是利用閥體中浮動活塞的水壓比控制，進出口端減壓比與進出口側活塞面積比成反比。這種減壓閥工作平穩(wěn)無振動；閥體內無彈簧，故無彈簧銹蝕、金屬疲勞失效之慮；密封性能良好不滲漏，因而既減動壓（水流動時）又減靜壓（流量為0時）；特別是在減壓的同時不影響水流量。
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現(xiàn)貨仙童液壓閥，F(xiàn)AIRCHILD減壓閥部分型號：
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FAIRCHILD仙童減壓閥，仙童液壓公司始終秉承“質量*、信譽*、服務*”的宗旨，竭誠為廣大客戶提供產(chǎn)品、方案和服務，致力于成為中國氣動液壓產(chǎn)品的團隊。經(jīng)過多年持續(xù)不斷的努力，已在業(yè)界享有一定的度和美譽度。