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VICKERS威格士DC24V電磁換向閥現(xiàn)貨型號*銷售：DG4V-3-0C-M-U-H7-60，DG4V-3-6CMUH7-60，DG4V-3-0A-MUH7-60，DG4V-3-2C-M-U-H7-60，DG4V-3-2N-MU-H7-60，DG4V-3-7C-M-U-H7-60，DG4V-3-2A-M-U-H7-60，DG4V-3-2AL-M-U-H7-60，DG4V-3-0B-MUH760，DG4V-3-22A-M-U-H7-60，DG4V-3-22AL-M-U-H7-60,DG4V-5-0AJ-MUH-6-20，DG4V-5-2AJ-MUH6-20，DG4V-2BJ-M-U-H6-20。伊頓VICKERS威格士V系列葉片泵*現(xiàn)貨型號：V10，V20，V20-11A,25V-14,25V-17,25V-21,2520V,35V-2,35V-30A,35V-38A,3525V-30A17,3525V-30A21,3525V-30A14,3520V-28，美國VICKERS威格士疊加式單向閥是一種自動降低管路工作壓力的專門裝置，它可將閥前管路較; 減壓閥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(dāng)?shù)姆?wù)水壓和流量。鑒于水的漏失率和浪費(fèi)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(yùn)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％。 威格士疊加式單向閥的構(gòu)造類型很多，以往常見的有薄膜式、內(nèi)彈簧活塞式等。減壓閥的基本作用原理是靠閥內(nèi)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(cè)的進(jìn)出口水壓差自動調(diào)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(jìn)出口端減壓比與進(jìn)出口側(cè)活塞面積比成反比。這種減壓閥工作平穩(wěn)無振動；閥體內(nèi)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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