Rupture Disk
The original rupture disk (bursting disc) manufacturer shaping the growth of pressure relief devices for over 80 years.

Electronic Vis-U-Tec

The Electronic Vis-U-Tec senses pressure differentials as low as 10 psig (0.69 barg) downstream from the Rupture Disk (Bursting Disc). Vis-U-Tec's piston fully extends, breaking the sensor's conductive circuit. Used with the Burst Disk Monitor, Vis-U-Tec's electrical warning triggers an audible or visual alarm.


  • Instantly Warns of a Ruptured Disk
  • Reduces Plant Down-Time
  • Reduces Product Loss
  • Minimizes Environmental Pollution
  • Re-useable - Reset the Piston Position


  • Relief Valve Isolation
  • For Double Disk Assemblies, Mid-Flange Installation Between Disks
  • For Disks Free-Venting to Atmosphere or Down-Stream Piping
  • Storage and Process Vessel Pressure Detection


  • After replacing the ruptured disk, reset the Vis-U-Tec by pushing the piston fully back into the unit.
  • 12 inch (30cm) two-conductor cable
  • 316 SS construction for all wetted parts contacting process fluids
  • Viton O-ring seals the piston.
  • Operating temperatures range from - 40 °F (- 40 °C) to 400 °F (204 °C).
  • Maximum current: 250 mA
  • Maximum voltage: 24 Vdc
  • Suitable for intrinsically safe applications when used with certified apparatus (i.e. Zener Barrier)
  • Available with Aluminum Piston option that provides visual warning only.


The Vis-U-Tec sensor fits into the Safety Head or piping outlet using a _ inch NPT screw connection.


Use the Vis-U-Tec sensor in applications that vent into enclosed volumes or for free-venting applications.

Consult the following table for minimum burst pressures.

Activation Pressure 10 psig (0.69 barg)
Minimum Disk Burst Pressure 40 psig (2.76 barg)


Disk Size Minimum Burst Pressure*
Inches mm psig barg
1 25 100 6.89
1.5 40 100 6.89
2 50 100 6.89
3 80 200 13.79
4 100 200 13.79
6 150 350 24.13

Ordering Information

For all your rupture disk (bursting disc) needs, rely on BS&B. Contact the representative in your area or contact BS&B Safety Systems today.