ProPOS Series Rupture Disk

Ultra-Low Pressure Disk, ZOOK

ProPOS Series Rupture Disk

The ProPOS Rupture Disk (bursting disc) is a bi-directional rupture disk (bursting disc) designed to prevent over pressurization and provide vacuum protection for processing and storage tanks. The assembly design allows ultra low-pressure relief in the positive direction and low pressure relief in the vacuum direction

Sizes from 3″ – 12″. Bi-directional Rupture Disks Designed to Prevent Over Pressurization and/or Vacuum Protection for Processing and Storage Tanks


  • Burst Indication

Features And Benefits

  • Vacuum Relief ratings from 1″ WC to 30″ WC
  • Positive Pressure relief from 2 psig to 150 psig
  • Dual-Acting, tension loaded design, with laser cut metal top section and girdle (when ordered in 316SS)
  • 316SS girdle is standard. Other materials available
  • Flat seat design

Common Applications