Duplex Type

The DUPLEX Type Graphite Disk is the best choice for applications involving highly oxidizing agents and halogens.
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Features

  • Disks extend corrosion resistance by utilizing a liner on the flat surface of the disk that contacts the process media
  • Disks are capable of resisting virtually any corrosive except elemental free fluorine
  • Designed to fit ASME B16.5 Class 150 and 300 flanges
  • Burst ratings 0.50 to 1000 psig or higher
  • 0% manufacturing range
  • Operating pressures to 90% of the disk’s marked burst pressure (Contact ZOOK for operating ratio for burst pressures below 40 psig)
  • Temperature ratings –290°F to +700°F (–179°C to +371°C) Maximum temperature rating without insulation is 430°F (221°C) or 700°F (371°C) with insulation. Contact ZOOK for higher temperature ratings. The specified temperature shall be at the disk location at the time when the disk is expected to rupture
  • External type vacuum supports are available for vacuum service (Contact ZOOK when vacuum is present)
  • ASME B16.5 Class 300 disks are armored
  • ASME UD marking available