BS&B MRB High Pressure Rupture Disk (Bursting Disc)

Highlights

For high pressure applications. MRB (The Machined Reverse Buckling Rupture Disk (Bursting Disc)) offers a one-piece design including both disk and housing. It is a uniform metal slug machined to a thin diaphragm in the center and then formed. When the reversal pressure is reached the disk snaps through and shears out completely at the disk/housing junction

Features

Sizes 3/8" to 4"
Pressure Ratings available up to 70,000 psig
Opens full bore with no flow restrictions
Design assures long service life with a very high resistance to fatigue Non-torque sensitive
Maximum Operating Pressure to 90% of disk pressure rating
No knife blades required for opening
Use in gas or liquid service
Designed to adapt to customer's unique application

Sample MRB Installations

Selection Data

Specifications for Standard MRB Rupture Disks

Min/Max Pressure Ratings at 72° F. (psid)

*Consult factory for availability of other materials or pressure ratings.

Engineering Information

Minimum and maximum pressure ratings are applicable at 72° F.
Manufacturing Range:
Available with either 2%, 5% or 10% manufacturing range. The total range is placed on the minus side of the requested rating.
Example:
If a 20,000 psig MRB is ordered with a 10% manufacturing range, it may be tagged at any pressure between 20,000 psig and 18,000 psig.
Burst Tolerances: ± 5%
Tolerances are the maximum variation from the above tagged burst pressure.
Recommended maximum temperatures for each metal are:
Hastelloy C-276 900° F.
Inc/Alloy 600 900° F.
304L SS 900° F.

Burst Pressure Capability

*Consult factory for availability of other materials or pressure ratings.
STANDARD DESIGN
NOTE: Products, specifications, and all data in this literature are subject to change without notice. Questions regarding product selection and specifications for specific applications should be directed to BS&B, Attn: Customer Service Dept.