DDC-JQ電磁真空帶充氣閥
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DDC-JQ電磁真空帶充氣閥概述
DDC-JQ電磁真（zhēn）空帶充氣閥是機械真空泵安全閥，安裝於機械（xiè）真空泵的進氣口，並與（yǔ）泵同步開啟和（hé）關閉。當泵（bèng）停止工作或電源突然中斷時，閥門自動關閉。使真空（kōng）係（xì）統保持真空並將（jiāng）大氣充入泵腔內，從（cóng）而避免泵油逆（nì）向流動而汙染真空係統。適用介質為純淨空氣和非腐蝕性氣體。
Electro-vacuum Charging Valve
DDC-JQ electro-vacuum charging valve is a safety valve for vacuum, pump. It is mounted at the intake nozzle of vacuum pump, synchronously opened and closed with the vacuum pump. In case that vacuum pump stops working or power supply is suddenly broken off, valve will be cosed automatically to keep the vacuum system vacuum and the air charged into the cavity of vacuum pump, thus to prevent pump oil from reverse flow that can pollute the vacuum system. Applicable medium can be pure air and noncorrosive gases.
DDC-JQ電磁真空帶充氣閥主（zhǔ）要技（jì）術性能
Main Technical Performance| 適用範圍：Applicability | 105～10-2Pa |
| 閥門漏（lòu）率：Valve Leak Rate | ≤6.7×10-3Pa.L/S. |
| 適用溫度：Applicability | -30～+50℃ |
| 線圍溫升：Coil Temperature Rise | ≤65℃ |
| 開閉時間：Open-close Time | ≤3S |
| 電源電（diàn）壓：Mains Voltage | 220V/50Hz |
主（zhǔ）要零件材料
Materials of Main Parts
閥體、閥蓋、閥板：碳鋼或鋁合金
密封圈：丁腈橡膠
Body, bonnet and disc: carbon steel or aluminium alloy
Seal ring: NBR
外形及連接尺寸(mm)(JB919)
Overall and Connection Dimensions(mm)|
Model 型號 |
DN | h | B | H | D | Do | D1 | n-d |
Machineal pump 機械泵匹配參（cān）考 |
| DDC-JQ16 | 16 | 28 | 48 | 176 | 68 | 42 | 22 | 4-M5 | 2XZ-0.5～1 |
| DDC-JQ25 | 25 | 35 | 58 | 199 | 82 | 55 | 29 | 4-M6 | 2XZ-2～4 |
| DDC-JQ32 | 32 | 40 | 68 | 222 | 92 | 64 | 36 | 4-M6 | 2XZ-4 |
| DDC-JQ40 | 40 | 44 | 80 | 253 | 110 | 70 | 44 | 4-M6 | 2XZ-8 |
| DDC-JQ50 | 50 | 56 | 94 | 294 | 124 | 90 | 55 | 4-M8 | 2X-15 |
| DDC-JQ65 | 65 | 65 | 115 | 320 | 135 | 105 | 70 | 4-M8 | 2X-30 |
| DDC-JQ80 | 80 | 75 | 140 | 367 | 165 | 125 | 85 | 4-M8 | 2X-70 |
