The RA4 rupture disks are designs to cover the majority of low pressure rupture disk applications and are designed to be used in the RAH Pre-Torque holder.


  • Designed for Non-fragmentation
  • Operating ratios up to 95% of the minimum tolerance
  • Disk designs offer high cycle life (when compared to forward-acting design disks)
  • Suitable for liquid, gas, or two-phase applications