Bi-Directional Rupture Disc ZW

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}

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.

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.

Description

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 71 °F
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]	17	25	35	60	125	245	400	600
In vacuum direction [cm²]	4.5	6.0	11	20	55	60	90	110
Standard material combination: stainless steel/PTFE/stainless steel up to max. 462 °F. Different nominal widths, pressure classes, temperatures, materials and fittings available on request.