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產品簡介
產品介紹
GD型高真空擋板閥概述
GD型高真空擋板閥用于接通或切斷真空管路中的氣流。適用介質為純凈空氣和非腐蝕性氣體。高真空擋板閥按軸封結構可分GD-J型橡膠軸封和GD-J(b)型波紋管軸封兩種。按通導形式可分GD-J為角通型式，GD-S為帶預抽口的三通型式。
High Vacuum Flapper Valve
GD high vacuum flapper valve 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.
GD型高真空擋板閥主要技術性能
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
密封件：丁腈橡膠、氟橡膠、波紋管(軸封)。
Body, bonnet and stem: aluminium alloy, carbon steel or stainless steel
Sealing element: NBR, Viton, bellows(shaft seal)
外形及連接尺寸(mm)
Overall and Connection Dimensions(mm)
| Model 型號 | DN | D1 | D | A | H | P | 法蘭標準 |
| GD-J10(b) | 10 | 12.2 | 30 | 40 | 124.5 | 60 | GB4982 |
| GD-J16(b) | 16 | 17.2 | 30 | 40 | 124.5 | 60 | |
| GD-J25(b) | 25 | 26.2 | 40 | 50 | 134.5 | 78 | |
| GD-J32(b) | 32 | 34.2 | 55 | 58 | 153 | 78 | |
| GD-J40(b) | 40 | 41.2 | 55 | 65 | 160.5 | 78 | |
| GD-J50(b) | 50 | 52.2 | 75 | 70 | 203 | 78 |
活套法蘭連接
| Model 型號 | DN | D1 | Do | D2 | A | P | H | n-φc | Dny預抽口 | 法蘭標準 |
| GD-J50 | 50 | 110 | 90 | 55 | 70 | 78 | 203 | 4-φ9 | | GB6070 |
| GD-J63 | 63 | 130 | 110 | 68 | 88 | 160 | 380 | 4-φ9 | | |
| GD-J80 | 80 | 145 | 125 | 85 | 98 | 160 | 400 | 8-φ9 | | |
| GD-J100 | 100 | 165 | 145 | 105 | 108 | 160 | 420 | 8-φ9 | | |
| GD-J(S)160 | 160 | 225 | 200 | 165 | 158 | 160 | 575 | 8-φ11 | DN40 GB4982 | |
| GD-J(S)200 | 200 | 285 | 260 | 208 | 200 | 160 | 655 | 12-φ11 | DN50 GB6070 | |
| GD-J(S)250 | 250 | 335 | 310 | 258 | 208 | 250 | 690 | 12-φ11 | DN63 GB6070 | |
| GD-J(S)320 | 320 | 425 | 395 | 328 | 250 | 250 | 785 | 12-φ14 | DN80 GB6070 | |
| GD-J(S)150 | 150 | 220 | 195 | 156 | 158 | 160 | 575 | 8-φ12 | DN40 GB4982 | JB919 |
| GD-J(S)300 | 300 | 380 | 350 | 308 | 250 | 250 | 785 | 8-φ14 | DN80 GB6070 | JB919 |
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