J461Y,J461H正齒輪焊接截止閥*的優(yōu)點(diǎn)是： （ l ）在開(kāi)啟和關(guān)閉過(guò)程中，由于閥瓣與閥體密封面間的摩擦力比閘閥小，因而耐磨．（ 2 ）開(kāi)啟高度一般僅為閥座通道直徑的l / 4 ，因此比閘閥小得多。 （ 3 ）通常在閥體和閥瓣上只有一個(gè)密封面，因而制造工藝性比較好，便于維修。但是，截止閥的缺點(diǎn)也是不容忽視的。其缺點(diǎn)主要是流阻系數(shù)比較大，因此造成壓力損失，特別是在液壓裝置中，這種壓力損失尤為明顯.

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