Z-Size

Z-Size

ZOOK is pleased to announce the global launch of a new web-based rupture disk sizing program.

Go To Z-Size

The Z-Size tool is intuitive, which saves you time and helps you eliminate errors that happen so often when sizing rupture disks.


All you have to do is provide a few important values into the sizing configurator and Z-Size will automatically calculate the accurate rupture disk size for your application within minutes.

Z-Size has many built-in features to help you calculate the correct rupture disk size!

  • SI, imperial and metric units of measurement available.

  • Relieving Case - Blocked Discharge, Fire Contingency or Other.

  • Purpose for calculations - Primary, Secondary or Supplemental calculations.

  • Over Pressure Allowance is fully flexible for any case.

  • List of standard mediums available including the ability to create a medium.

  • Calculate to ASME, API520 or ISO 4126-6.

  • Ability to email instantly any issue when in Z-Size.

  • Save or modify previous projects. Printable output available.

Go To Z-Size

Z-Size Video Tutorials

Z-Size Introduction &
How to Create Your Account

Time: 2:26

Module: 1 of 5

How to Create a Project


Time: 1:51

Module: 2 of 5

Z-Size Configurator
& How to Calculate

Time: 5:32

Module: 3 of 5

How to Copy, Add or
Delete a Sizing Calculation

Time: 1:55

Module: 4 of 5

Review of Print, Save, Save & Exit, and Exit without Saving

Time: 1:38

Module: 5 of 5