- Operating Ratio
- 95% of marked burst pressures over 40 psig (2.76 barg) – ASME
- 95% of minimum burst tolerance for burst pressures less than or equal to 40 psig (2.76 barg) – ASME and EN ISO 4126-2
- 100% of minimum burst pressure over 40 psig (2.76 barg) – EN ISO 4126-2
- Capable of up to 100,000 cycles with pressures ranging between full vacuum up to 95% of marked burst pressure (ASME) or 100% of minimum burst pressure range (EN ISO 4126-2) (up to 95% of minimum burst pressure for pressures below 40 psig)
- Operates in both gas and liquid applications.
- Can be ordered with an optional FEP or PFA fluoropolymer liner on the process side.
- ASME Certified.
- Effective in VALVEGUARD protection of expensive Pressure Relief Valves and Safety Relief Valves.
Complete and current specs can be found in the RD520 AXIUS® Rupture Disc Data Sheet
| Design | Smooth, Reverse-Acting, Lowest Burst Pressures |
| Size Range | 0.75 in to 12 in | DN20 to DN300 |
| Burst Pressure Range | 7 psig to 600 psig | 0.48 barg to 41.37 barg |
| Burst Pressure Tolerance | ± 1 psig for burst pressure < 15 psig ± 2 psig for burst pressure > 15 psig and < 40 psig ± 5% for burst pressure > 40 psig |
± 0.07 barg for burst pressure < 1.03 barg ± 0.14 barg for burst pressure > 1.03 barg and < 2.76 barg ± 5% for burst pressure > 2.76 barg |
| Materials | 316/316L SST, Hastelloy®C276 and Inconel®625 |
- ASME
- CE Marked
- KOSHA
- SELO
- CRN
- See all Fike Certifications and Approvals
Data Sheets
- RD520 AXIUS Rupture Disc Data Sheet
- RD520 AXIUS Rupture Disc Data Sheet (Spanish)
- RD520 AXIUS Rupture Disc Data Sheet (Chinese)
- Insert Holders Data Sheet
- Insert Holders Data Sheet (Europe)
- Insert Holders Data Sheet (Spanish)
- Insert Holders Data Sheet (Chinese)
- TQ Series Pretorqueable Holder Data Sheet
- TQ Series Pretorqueable Holder Data Sheet (Europe)
- TQ Series Pretorqueable Holder Data Sheet (Spanish)
- TQ Series Pretorqueable Holder Data Sheet (Chinese)
- RD520 Axius/SRL Double Disc Series Data Sheet
- RD520 Axius/SRL Double Disc Series Data Sheet (Europe)
- RD520 Axius/SRL Double Disc Series Data Sheet (Chinese)
Technical Documents
- Best Practices for RD/PRV Combinations
- Certified Combination Capacity Factors
- ASME Code and Rupture Discs
- Certified KR and MNFA Values
- Rupture Disc Sizing
- Use of Rupture Discs in Combination with Pressure Relief Valves
- Considerations for the Use of Double Disc Rupture Disc Assemblies
- Getting the Most Out of Your Rupture Disc
