RA4 Rupture Disk

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Zook - Chemical Processing, Zook - Food and Beverage, Zook - Petroleum Refining, Zook - Pharmaceutical, Zook - Reverse Acting Disk

RA4 Rupture Disk

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

Sizes from 1" - 12". Burst Ratings from 2 to 40 psig. Mounts into the RAH Pre-Torque Holder

OPTIONS / ACCESSORIES : TFE liners are available to provide protection from corrosive media

Features and Benefits


  • 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


Common Applications

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