CDC-DM™ & CDCV-DM™

Designed to provide instantaneous, full-opening pressure relief, the Continental Disc CDC-DM and CDCV-DM “direct-mount” holder-less composite rupture discs are differential pressure relief devices used to protect pressurized systems, equipment, and vessels from potentially damaging overpressure conditions.

The CDC-DM composite rupture disc is designed to operate in conditions that are not subjected to vacuum conditions, while the CDCV-DM composite rupture disc is designed to operate in vacuum conditions.

CDC-DM™ & CDCV-DM™
  • The metallic top section can be manufactured from various materials, depending on your application and corrosion-resistance requirements. Seals, protective rings, gaskets and outline liners can also be manufactured from a variety of materials to meet your needs.
  • Our preformed composite rupture discs also feature a seven-hole pattern, positioned at the apex of the rupture disc’s top section. This unique configuration, in combination with the pre-cut sections along the dome, provide non-fragmenting characteristics when used with a fluoropolymer seal.
  • By using this seven-hole design, thicker, more durable materials can be used to manufacture the rupture disc, while still achieving the high 80% operating-to-burstpressure ratio.
  • Various seal material options, such as fluoropolymers and exotic metals, help ensure excellent corrosion resistance. Our non-metallic seals are essential to eliminate fragmentation.
  • An outlet ring is provided on the CDCV-DM and the CDC-DM Composite Rupture Discs for rigidity and to help align the rupture disc within the customer’s flange.
  • Ideal for liquid or gas/vapor applications.
  • Handling support provided when vacuum support is not specified.
  • Size Range: 14” – 36” (350 mm – 900 mm)
  • Flange Classes: Available in ASME #150 Series A, DIN PN6, and JIS 10K weld neck flange with standard schedule pipe bore
  • Materials of Construction:
    • Outlet Gasket: Non-asbestos, Polytetrafluoroethylene (PTFE)*, or GYLON® 3500
    • Outlet Ring: 316 SS, 316L SS, Alloy C276, Alloy 600, Alloy 400 or Nickel
    • Top Section: 316 SS, 316L SS, Alloy C276, Alloy 600, Alloy 400 or Nickel
    • Seal: Aluminum, 316 SS, 316L SS, Alloy C276, Alloy 600, Alloy 400, Nickel or Fluoropolymer
    • Vacuum/Handling Support: 316 SS, 316L SS, Alloy C276, Alloy 600, Alloy 400 or Nickel
    • Inlet Gasket: Non-asbestos or Fluoropolymer
    • Operating Pressure: Up to 80% of the rated (stamped) burst pressure in liquid or gas applications
  • Maximum Temperature: 400°F (204°C)
  • Burst Range: 2 psig – 59 psig (0,13 barg – 4,06 barg)
  • CDCV-DM can withstand full vacuum conditions
  • KR Factors: 0.93 gas/vapor relief, 1.06 liquid relief
  • Global certifications and approvals including ASME (UD) and PED (CE)

Industry Applications

Chemical Processing
Chemical Processing
Chemical Processing

Our rupture discs are manufactured with chemical processing in mind – corrosion resistance, leak tightness, high accuracy and durability come standard.

Oil, Gas & Petrochemical)
Oil & Gas (Petrochemical)
Oil & Gas (Petrochemical)

The hydrocarbon industries require cost-effective system protection with a special focus on reducing fugitive emissions. Our catalog of configurations, materials, burst ratings and sizes make our rupture discs the right choice for these operations.

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