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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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          ¡ö
          ¡¡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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