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      ¡ö DDC-JQÐÍÊÇ»úÐµÕæ¿Õ±Ã°²È«·§£¬°²×°ÓÚ»úÐµÕæ¿Õ±ÃµÄ½øÆø¿Ú£¬²¢Óë±Ãͬ²½¿ªÆôºÍ¹Ø±Õ¡£µ±±ÃÍ£Ö¹¹¤×÷»òµçԴͻȻÖжÏʱ£¬·§ÃÅ×Ô¶¯¹Ø±Õ¡£Ê¹Õæ¿Õϵͳ±£³ÖÕæ¿Õ²¢½«´óÆø³äÈë±ÃÇ»ÄÚ£¬´Ó¶ø±ÜÃâ±ÃÓÍÄæÏòÁ÷¶¯¶øÎÛÈ¾Õæ¿Õϵͳ¡£ÊÊÓýéÖÊΪ´¿¾»¿ÕÆøºÍ·Ç¸¯Ê´ÐÔÆøÌå¡£
       
      ¡ö DDC-JQ
      Electro-vacuum Charging Valve
       
        ¡ö 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.
       
      ¡ö DDC-JQÖ÷Òª¼¼ÊõÐÔÄÜ
      Main Technical Performance
       
        ¡ö


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      ¡¡ÊÊÓ÷¶Î§£ºApplicability ¡¡105¡«10-2Pa
      ¡¡·§ÃÅ©ÂÊ£ºValve Leak Rate ¡¡≤6.7×10-3Pa.L/S.
      ¡¡ÊÊÓÃζȣºApplicability ¡¡-30¡« 50¡æ
      ¡¡ÏßΧÎÂÉý£ºCoil Temperature Rise ¡¡≤65¡æ
      ¡¡¿ª±Õʱ¼ä£ºOpen-close Time ¡¡≤3S
      ¡¡µçÔ´µçѹ£ºMains Voltage ¡¡220V/50Hz
       
      ¡ö Ö÷ÒªÁã¼þ²ÄÁÏ
      Materials of Main Parts
       
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      Body, bonnet and disc: carbon steel or aluminium alloy
      Seal ring: NBR
       
      CONSTRUCTION FIGHTS£¨mm£©
       
      ¡ö ÍâÐμ°Á¬½Ó³ß´ç£¨mm£©£¨JB919£©
      Overall and Connection Dimensions£¨mm£©
      Model
      ÐͺÅ
      DN
      h
      B
      H
      D
      Do
      D1
      n-d
      Machineal pump
      »úе±ÃÆ¥Åä²Î¿¼
      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

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