Reverse Acting Metal Bursting Disks
Series SU
Types SU-R / SU-C / SU-X
STRIKO reverse acting metal bursting disks are installed in a standard holder SHU or in a pre-torqued holder SHU Pro between flanges. They are especially suitable for securing pulsating working pressures of medium to high strength.
Design examples
SU-C in DN50
SU-C in the pre-torqued holder SH-U Pro
Models
| SU-R | STRIKO – reverse acting, shearRing |
| SU-C | STRIKO – reverse acting, C-form scored |
| SU-X | STRIKO – reverse acting, x-form scored |
Advantages in the application
- fragment-free opening behaviour
- ideal as single pressure relief unit or used in combination with safety valve
- Vacuum resistant
- optimum working ratio: 90%
- counter pressures up to min 1.4 times of the burst pressure are possible
- testing safety valves without time consuming removal
- high pressure change resistance
- equipped with a 3D name-plate for safe detection of correct direction of installation as a standard
- ideal for securing media that tend to “cake”
Specifications
| Materials | Stainless steels, Inconel, nickel, special materials such as hastelloy |
| Nominal widths | DN 25 – DN 250 |
| Burst pressures | from 0.3 bar (g) to 70 bar (g) |
| Working ratio | ۹۰ % |
| Burst tolerance | min +/- 5 % |
| Utilisation temperature range | -۲۰۰ ℃ to +480 ℃ |
| Bursting disc holder | SHU and SHU Pro |
| Vacuum support | not necessary |
| Burst / Leakage Indication | optionally installed on discharge side |
| Installation before safety valve? | yes |
Individual designs
The are a number of configuration options among our STRIKO reverse acting metal bursting discs. Whether with integrated burst indicatio, in standard materials or special materials – just talk to our specialists. We are happy to advise you competently and comprehensively!
Accessories – Burst / Leakage Indication
| Series | Description |
| SVT 02 | Burst Indicatior for breakage of bursting disk / opening of safety valve |
| SVT 05 | Leakage sensor (activates already for the smallest leaks) |
| SVT AM | Full metal alarm for bursting disk monitoring (for high temperatures up to +600 ℃ and at aggressive media) |
| SVT AM-L | Alarm for bursting disks/breakage monitoring (use for lowest burst pressures, from 10 mbar (g)) |