ZOOK Reverse Acting rupture disks offer revolutionary new scoreless and scored non-fragmenting designs for universal use – new ultra low ratings – 90% operating ratios.

• Scoreless design offers higher cycle life when compared to scored reverse acting disks
• Single disk design covers 95% of plant requirements
• Excels in liquid, gas, or two-phase applications
• ASME UD marking available
  
    Bulletin no. 320302

• Unique scoreless dual domed design offers ultra low burst ratings
• Excels in liquid, gas, or two-phase applications
• ASME UD marking available
  
   Bulletin no. 320600

• Disk is cross scored on the vent side to minimize the effect of product build-up on the process side
• Suitable for gas service only
• ASME UD marking available
  
    Bulletin no. 320400

• Solid non-scored disk reverses into
  knife blades mounted into outlet holder
• Superior fatigue and cycle life when compared to scored reverse acting disks
  
   Bulletin no. 320700