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高(gao)真空(kong)(kong)擋板(ban)閥(fa)(fa)(fa)GD系(xi)列手(shou)動(dong)型(xing),真空(kong)(kong)角(jiao)閥(fa)(fa)(fa),氣(qi)動(dong)真空(kong)(kong)擋板(ban)閥(fa)(fa)(fa),Y型(xing)擋板(ban)閥(fa)(fa)(fa)(又稱角(jiao)閥(fa)(fa)(fa))是真空(kong)(kong)系(xi)統(tong)中的重要元件(jian)之一,該閥(fa)(fa)(fa)傳動(dong)部件(jian)采用(yong)螺(luo)紋(wen)結構,依靠人(ren)手(shou)旋轉(zhuan)手(shou)輪、啟閉(bi)閥(fa)(fa)(fa)板(ban),是在1.3×10-5~3×105Pa的真空(kong)(kong)系(xi)統(tong)中用(yong)來開啟或隔斷氣(qi)流的閥(fa)(fa)(fa)門。