BI-Directional Rupture Discs - The 2-in-1 rupture disc


The bi-directional acting rupture disc opens in one direction for a defined overpressure and in the other direction for vacuum. It is primarily used in storage tanks and processes involving gases or liquids. The rupture disc permits a standard operating ratio of 80 %* in the overpressure direction and 70 %* in the vacuum direction.

* Depending on the specific application

Rupture disc / bursting disc ZW
REMBE® bi-directional rupture disc

By combining the principles of the KUB® reverse acting rupture disc with the buckling pin and the three-section design of the ODV forward acting rupture disc, we can offer you a REMBE® rupture disc that responds at two different but precisely defined burst pressures.

Rupture disc / bursting disc ZW
REMBE® bi-directional rupture disc

Your advantages

  • Performs the work of two rupture discs at one installation point.
  • No additional holder required: mounted directly between flanges or angular rings.
  • Suitable for a wide range of applications.

"Almost every bidirectional rupture disc that has left our premises over the last 20 years was built by me. What most customers find so convincing is that it has a single installation point and combines the functions of two rupture discs. Perfect, isn’t it?"

Dietmar Wiedemeier, responsible for bidirectional rupture discs


Rupture disc / bursting disc ZW
REMBE® bi-directional rupture disc
Technical data
NPS[in] 2'' 2½'' 3'' 4'' 6'' 8'' 10'' 12''
DN[mm] 50 65 80 100 150 200 250 300
Min. burst pressure at 22 °C
Pressure [barg] 0.50 0.50 0.50 0.30 0.15 0.10 0.10 0.10
Vacuum [barg] -0.40 -0.30 -0.15 -0.025 -0.02 -0.02 -0.02 -0.015
Vent area
In pressure direction [cm2]17253560125245400600
In vacuum direction [cm2]4.56.01120556090110
Standard material combination: stainless steel/PTFE/stainless steel up to max. 230 °C.
Different nominal widths, pressure classes, temperatures, materials and fittings available on request.



send enquiry