Mono Type Rupture Disk

The MONO Type Graphite Rupture Disk (bursting disc) is the best choice for low and intermediate burst ratings.
Mono Type Rupture Disk


  • Designed to fit ASME B16.5 Class 150 flanges (Higher ratings to fit Class 300 flanges are furnished in the INVERTED and DUPLEX Type Disks)
  • 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
  • Counterbored side of the disk contacts the process media
  • Vacuum supports are available for ratings below 25 psig
  • May be configured to withstand high back pressure generated in closed piping systems – request Bak-Pressure™ bulletin
  • Stocked MONO Disks, ready for immediate shipment
    • Sizes: 1", 1-1/2", 2", 3", 4", 6", 8" to fit ASME B16.5 Class 150 flanges
    • Burst Ratings: 10, 15, 20, 25, 30, 40, 50, 75, 100, 125, 150 psig @ 72°F (22°C)
    • Note: Sizes 6" and 8" with burst ratings 125 and 150 psig @ 72°F (22°C) are stocked in INVERTED type
  • ASME UD marking available