RA6 - Reverse Acting Rupture Disk

The RA6 reverse acting rupture disks (bursting discs) are designed to cover the majority of medium pressure rupture disk (bursting disc) applications and are designed to be used in the RAH Pre-Torque holder.
RA6 Reverse Acting Rupture Disk


  • Scoreless design offers higher cycle life when compared to scored reverse acting disks
  • Standard operating ratio of 90% of the marked rating on disk tag. May be extended to 95% of the minimum burst pressure. Contact ZOOK for operating ratio on pressures below 40 psig
  • Certified for liquid, gas, or two-phase applications
  • Standard manufacturing ranges of 0%, -5%, and -10% ensures marked rating on disk tag does not exceed the MAWP of equipment
  • Wide range of standard and exotic materials available
  • Withstands back pressure up to the positive set pressure of the disk
  • Resists product build-up. The smooth convex side of the disk is exposed to the process media
  • Damage ratio of 1.0 or less
  • ASME UD, CE and TUV Compliance available
  • Unique alignment pin design ensures proper disk orientation into RAH holder
  • 3-dimensional stainless steel tag permanently engraved with complete disk specifications
  • TFE liners are available to provide protection from corrosive media