SRX Bursting Disc Scored, Reverse-Acting, Low Burst Pressure


The reverse-acting, SRX bursting disc has a cross scored design for use with vapour services only. It offers a superior service life in heavy pulsating and cyclic duty, and performs reliably under less than ideal installation conditions.

  • The score configuration controls the disc opening and enables the disc to burst without fragmentation.
  • Effective when used to isolate Safety Relief Valves
  • Will sustain process operating pressures as high as 90% of the stamped disc rating
  • Withstands full vacuum, or back pressure service in magnitudes equivalent to the stamped burst pressure.
  • Special seating configuration allows this bursting disc to perform reliably, even under less than ideal installation conditions.
  • All manufacturing ranges are below the specified burst pressure
  • Materials of construction include: 316/316L SST, Inconel®, Monel®, Nickel, and Hastelloy®. Protective coatings such as fluoropolymer and polyurethane are available to enhance corrosion resistance.
  • Effective in VALVEGUARD protection of expensive Pressure Relief Valves and Safety Relief Valves
Design Scored, Reverse-acting, Low Burst Pressure


Size Range 25 – 600 mm 1 – 24 in
Burst Pressure Range 1.9 – 49.7 BARG 27 -720 PSIG 1.9 – 50.62 KG/CM2
Tolerances ± 5% except 2.7 BARG and below which is  0.14 BARG  ± 5% except 40 PSIG and below which is ± 2 PSIG



SRX Rupture Disc Chart

SRX Rupture Disc Chart





  • Geothermal Plants
  • Geothermal Piping
  • Reactors
  • Liquid-Vapor Separators
  • LNG
  • Acidic/Corrosive Service
  • Heat Exchangers
  • ValveGuard