Skip to content
Ritecnl
BS&B

BS&B · Rupture Disks

Ritec partner

BS&B Saf-T-Graf IMB / AIMB inverted graphite disk

Inverted monoblock graphite disk with a much wider burst range, 21 mbar to 69 bar, in DN15 to DN600, vacuum resistant by design. AIMB armoured, AIMB-HTA to 427 °C.

The IMB inverts the geometry of the MB: the graphite membrane sits at the downstream end of the monoblock body and is supported by the body itself against reverse pressure. The result is a graphite disk that resists vacuum without any add-on support and that covers a far wider burst range, up to 69 bar in the small sizes.

Like the MB it is seamless, installs between standard flanges and is offered with an armour ring (AIMB) and a high-temperature version (AIMB-HTA). It is the disk we propose for corrosive processes with vacuum steps, and for corrosive duty at pressures above the reach of the MB.

Selection data we need

Size and flange standard, burst pressure and temperature, operating pressure, vacuum conditions and medium.

Applications

  • Corrosive service that also sees vacuum
  • Higher pressure corrosive applications
  • Reactors with alternating vacuum and pressure steps
  • Replacement of MB disks that needed a vacuum support

Models: Rupture Disks

BS&B

BS&B Sigma / Sigma EXL reverse buckling disk

Flagship Sta-Saf reverse buckling disk: operates at up to 95 % (ASME) or 100 % (CE/PED) of burst pressure, full vacuum resistant, non-fragmenting, DN25 to DN600.

BS&B

BS&B SKr reverse buckling disk

Scored reverse buckling disk with a 90 % operating ratio and burst pressures from 0.6 to 34.5 bar, non-fragmenting, for gas, vapour and liquid service. The all-round Sta-Saf disk.

BS&B

BS&B SKi reverse buckling disk

The first back-pressure independent reverse buckling disk: variable back pressure up to 2 bar has no effect on the burst pressure. DN25 to DN250, 3.45 to 34.5 bar, 90 % operating ratio, non-fragmenting.