lectro-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.
主要技術(shù)性能
Main Technical Performance| 適用范圍:Applicability | 105~10-2Pa |
| 閥門漏率: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(shí)間:Open-close Time | ≤3S |
| 電源電壓: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(hào) | DN | h | B | H | D | Do | D1 | n-d | Machineal pump 機(jī)械泵匹配參考 |
| 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 |






































龙陵县|
公安县|
南宁市|
开原市|
拜城县|
古蔺县|
咸宁市|
汉中市|
九龙城区|
探索|
石门县|
卫辉市|
新巴尔虎左旗|
如东县|
新津县|
阿克|
安福县|
宜丰县|
无为县|
韶关市|
襄樊市|
大埔县|
闸北区|
长汀县|
扎兰屯市|
颍上县|
沙田区|
和顺县|
阜康市|
巫山县|
呼和浩特市|
蓬溪县|
泰兴市|
昌都县|
瑞金市|
阿瓦提县|
彭阳县|
江孜县|
崇礼县|
安化县|
乌鲁木齐县|