DDC-JQ電磁真空帶充（chōng）氣閥（fá）
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DDC-JQ電磁真空帶充（chōng）氣閥概述
DDC-JQ電（diàn）磁真空帶充氣閥是機械真空泵安全閥，安（ān）裝於機械真空泵的進氣口，並與泵同步開啟和關閉。當泵停止工作或電（diàn）源突然中斷時（shí），閥門自（zì）動關閉。使真空係統保持真空並將大氣充入泵腔內，從而避免泵油逆向流動而汙染真空係統。適用介（jiè）質為純淨空氣和非腐（fǔ）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要技術性能
Main Technical Performance| 適（shì）用範圍：Applicability | 105～10-2Pa |
| 閥門漏率：Valve Leak Rate | ≤6.7×10-3Pa.L/S. |
| 適用（yòng）溫度：Applicability | -30～+50℃ |
| 線（xiàn）圍溫升：Coil Temperature Rise | ≤65℃ |
| 開閉時間：Open-close Time | ≤3S |
| 電源（yuán）電（diàn）壓：Mains Voltage | 220V/50Hz |
主要零件材料
Materials of Main Parts
閥體、閥蓋、閥板：碳鋼或鋁合金
密封圈：丁腈橡（xiàng）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（xiè）泵匹（pǐ）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 |
