Low-pressure Bursting Disks

Low-Pressure Rupture Disks

The ZOOK Z-VAC and Z-POS Series are a range of bi-directional rupture disk and holder assemblies designed to relieve between 1-30” WC in one direction and 2-150 psi in the other direction uniquely protecting processing, fermentation, storage tanks and low strength vessels from vacuum implosion or over-pressure failure in a single device. Both designs relieve ultra-low pressure settings. The Z-VAC allows ultra-low pressure relief in the vacuum direction starting at 1” (25 mm) of water column differential and features user friendly replaceable knife blades to ensure optimum performance. The Z-POS allows ultra-low pressure relief in the positive direction starting at 1” (25mm) of water column differential.

Product Description

Rupture Disk Features 

  • Highly accurate, ultra-low burst pressures starting at 1” (25 mm) water column • Dual-acting design, with laser cut metal top section and girdle (when ordered in 316SS)
  • Sizes 2” to 12” / 50 mm to 300 mm
  • Standard 316SS girdle for full range of vacuum pressures ensures clean opening of seal at specified pressure
  • Burst ratings from 1” (25 mm) of water column to 150 psig (10.34 barg)
  • Temperature ratings to 500˚F (260˚C)
  • Permanently attached 3D stainless steel tag shows positive and vacuum flow directions
  • Optional integral burst indication

Sanitary Fitting Disks

Sanitary fitting holders are available to allow direct connection to systems utilising ferrule connections. For more information on our ProVAC / ProPOS sanitary disks, contact a ZOOK representative.

BI Integral Sensor Available

The BI Series offers a simple and effective means of remote monitoring of the disk.

  • The BI is attached to the atmospheric side of the Teflon seal protecting it from the process.
  • Provides signal indication instantly upon rupture of the disk