質(zhì)量供應(yīng)DH41F-40P超低溫法蘭止回閥型號
DJ661F-16P低溫緊急切斷閥
DJ641F-16P低溫緊急切斷閥
DN641F-25P低溫緊急切斷閥
DN661F-25P低溫緊急切斷閥
DN641F-40P低溫緊急切斷閥
DN661F-40P低溫緊急切斷閥
超低溫拉斷閥
超低溫加氣口
超低溫回氣口
超低溫羊角快速接頭
超低溫法蘭快速接頭
超低溫旋卡快速接頭
DA21F-40P低溫安全閥
J61F-40P低溫截止閥
J61F-63P低溫截止閥
J41F-16P低溫截止閥
DJ41F-25P低溫截止閥
J41F-40P低溫截止閥
J41F-63P低溫截止閥
DJ61F-40P低溫截止閥
DJ61F-63P低溫截止閥
DJ41F-16P低溫截止閥
DJ41F-40P低溫截止閥
DJ41F-63P低溫截止閥
DJ64F-40P低溫角式截止閥
DH61F-40P低溫止回閥
DH61F-16P低溫止回閥
DH61F-25P低溫止回閥
DY22F-25P低溫升壓調(diào)節(jié)閥
DY22F-40P低溫升壓調(diào)節(jié)閥
DY22F-25P低溫降壓調(diào)節(jié)閥
DY22F-40P低溫降壓調(diào)節(jié)閥
DJ63F-25P低溫三通截止閥
DJ63F-40P低溫三通截止閥
DJ63F-25P低溫五通截止閥
DJ63F-40P低溫五通截止閥
J61F-40P低溫儀表閥
J24W-220P低溫吹除閥
J24W-220P低溫角式截止閥
J21W-220P壓力表閥
J21W-40P低溫截止閥
J21W-220P壓力表閥
G61F-40P低溫過濾器
質(zhì)量供應(yīng)DH41F-40P超低溫法蘭止回閥瓣沿著閥體垂直中心線滑動的止回閥,內(nèi)螺紋止回閥只能安裝在水平管道上,在高壓小口徑止回閥上閥瓣可采用圓球。蝶式止回閥的閥體形狀與截止閥一樣(可與截止閥通用),因此它的流體阻力系數(shù)較大。其結(jié)構(gòu)與截止閥相似,閥體和閥瓣與截止閥相同。閥瓣上部和閥蓋下部加工有導(dǎo)向套簡,閥瓣導(dǎo)向簡可在閥盞導(dǎo)向簡內(nèi)自由升降,當(dāng)介質(zhì)順流時,閥瓣靠介質(zhì)推力開啟,當(dāng)介質(zhì)停流時,閥瓣靠自垂降落在閥座上,起阻止介質(zhì)逆流作用。直通式蝶式止回閥介質(zhì)進出口通道方向與閥座通道方向垂直;立式升降式止回閥,其介質(zhì)進出口通道方向與閥座通道方向相同,其流動阻力較直通式小。
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