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(1)被控介質(zhì)的種類(lèi) (2)介質(zhì)的溫度、壓力 (3)介質(zhì)的密度、粘度、腐蝕性 (4)控制閥入口壓力范圍與出口壓力范圍 (5)介質(zhì)的流量范圍 (6)進(jìn)出口管道材質(zhì)與尺寸、連接方式 (7)執(zhí)行機(jī)構(gòu)的類(lèi)型與要求 (8)噪音水平 (9)安全方面的考慮
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