RLPS - Sanitary Disks


The RLPS Series Sanitary Disk is an extension of ZOOK’s Reverse Acting (RA) Metal Rupture Disk (bursting disc) design. Applications include food processing, dairy, breweries, pharmaceutical, distilling, baking, canning, cosmetics, biotechnology, and petrochemical industries.


  • Provides over-pressure protection in sanitary piping system
  • Ideal for high purity and corrosion resistance service
  • Designed for Non-fragmentation
  • Rugged, scoreless design offers higher cycle life when compared to scored reverse acting disks
  • Excels in liquid, gas, or two-phase applications
  • 0% manufacturing range is standard
  • Standard operating ratio of 90% of the low end of the burst tolerance – may be extended to 95% of the minimum burst pressure. (Contact ZOOK for operating ratio on pressures below 40 psig)
  • Self supporting under full vacuum (With Optional Vacuum Ring)
  • Resists product buildup. Only the smooth convex side of the disk is exposed to the process medium
  • Installs using industry standard Tri-clamp®/Tri-clover® fittings (NA-Connect mounting also available)
  • Standard gasket material: Black Buna-N (see chart on reverse page for alternate materials)
  • CE and TUV compliance available


Sizes: 1″ – 4″ (25 mm – 100 mm)
Burst Pressure Range: 3 psig – 83 psig (0.21 barg – 5.72 barg)
Standard Operating Range: 95%



 RLPS Datasheet