GD-J/S型高真空檔板閥 GD High Vacuum Flapper Valve

GD型高真空擋板閥用于接通或切斷真空管路中的氣流。GD-J/S型高真空檔板閥適用介質(zhì)為純凈空氣和非腐蝕性氣體。高真空檔板閥按軸封結(jié)構(gòu)可分GD-J型橡膠軸封高真空檔板閥和GD-J(b)型波紋管軸封高真空檔板閥兩種。高真空檔板閥按通導(dǎo)形式可分GD-J為角通型式高真空檔板閥，GD-S為帶預(yù)抽口的三通型式高真空檔板閥。

GD high vacuum flapper valves is used to put through or cut off the airflow in vacuum pipeline. Applicable medium can be pure air and noncorrosive gases. According to its shaft seal structure, high vacuum flapper valve is classified into GD-J rubber shaft seal type and GD-J(b)bellows shaft seal type. According to its put-through type, it is classified into GD-J angle type and GD-S three-way type with prepumping.

主要技術(shù)性能 Main Technical Performance 

適用范圍：Applicability 　10⁵～1.3×10^-4Pa(軸封為橡膠) ; 10⁵～1.3×10^-5Pa(軸封為波紋管)
閥門漏率：Valve Leak Rate 　≤1.3×10^-4Pa.L/S.(軸封為橡膠) ; ≤1.3×10^-5Pa.L/S.(軸封為波紋管)
適用溫度：Applicable Temperature 　-25～+80℃(丁腈橡膠) ; -30～+150℃(氟橡膠)

主要零件材料 Materials of Main Parts

閥體、閥蓋、閥桿：鋁合金、碳鋼或不銹鋼Body, bonnet and stem: aluminium alloy, carbon steel or stainless steel

密封件：丁腈橡膠、氟橡膠、波紋管(軸封)。Sealing element: NBR, Viton, bellows(shaft seal)

外形及連接尺寸(mm) Overall and Connection Dimensions

快卸法蘭連接

活套法蘭連接