forward acting rupture disc / metal

The Nu-SafT System introduces a new concept that combines the benefits of advanced technology with the simplicity of a basic style. Reliable overpressure relief is assured with components which cover a wide range of applications and service pressures.

Overpressure relief from 19 psig (1.3 bar) to 1450 psig (100 bar) is assured in a range of sizes from 1 inch (25 mm) to 8 inch (200 mm).

The Nu-SafT System consists of an inlet and an outlet of the NX-7R Safety Head plus the XN or LCN Rupture Disk, depending on the pressure required. Refer to Figure 1.

The XN Rupture Disk (Bursting Disc) incorporates precision scoring technology in a metal, tension loaded design. The precision scoring design minimizes the possibility of disk fragmentation. Operating pressure may be extended to 80% of the disk's burst rating without the risk of metal fatigue and subsequent reduction in normal service life. The new design exhibits no premature failure or fatigue cracks after extended pressure cycle testing from vacuum to 80% of the disk's burst rating. The XN Rupture Disk (Bursting Disc) design can withstand full vacuum without the need for a vacuum support.