OVERPRESSURE
PROTECTION SOLUTIONS

What Is A Rupture Disc?

Non-reclosing pressure relief device actuated by differential pressure and designed to function by the bursting of the bursting disc(s), and which is the complete assembly of installed componentsincluding, where appropriate, the bursting disc holder.

Conventional domed bursting discs (Forward acting)

Conventional domed bursting discs shall be designed so that they burst due to tensile stresses when the bursting pressure is applied to the concave side of the bursting disc.

  1. Flat seat
  2. Angle Seat
  3. Flow

This type discs shall be domed by a means sufficient to cause a permanent set such that no further plastic flow occurs initially when the bursting disc is subjected to its intended operating condition.

PB

Forward-acting, tension-loaded rupture disk design without score lines. Mounts into a 7A - Angle Seat Holder.

D

Features a state-of-the-art laser slotted metal top section. Mounts into a 7A - Angle Seat Holder.

SFAZ

The SFAZ forward acting rupture disks (bursting discs) are solid metal scored disk design. Designed to be used in the UHZ Holder.

Reverse domed bursting discs (Reverse acting)

Reverse domed bursting discs shall be designed to function due to buckling, bending or shearingstresses when the bursting pressure is applied to the convex side of the bursting disc

  1. Flow

RA6

Covers the majority of medium pressure range rupture disk applications. Designed to be used in the RAH Holder.

RAX

Scored design covers the majority of high pressure range rupture disk applications. Designed to be used in the RAH Holder.

RA8

Covers the majority of high pressure range rupture disk applications. Designed to be used in the RAH Holder Designed to be used in the RAH Holder.

Flat Discs

ARD

ARD Disks provide simple, inexpensive protection against any condition. No holder required.

Graphite Discs

Duplex

Best Graphite Choice for Applications Involving Highly Oxidizing Agents and Halogens.

Mono

Best Graphite Choice for Low and Intermediate Burst Ratings.

Inverted

Best Graphite Choice for Higher Burst Ratings.

RT2

Replacement Element Type Graphite Rupture Disk.

Two-Way

Dual Rated to Protect Against Two Different Pressures in Opposite Directions.

Graphite Screw Type (GST)

Designed for use with Inverted Type rupture disks.

Insulated

Best Graphite Choice for elevated temperatures. Required for temperatures exceeding 430°F (221°C) to 700°F (371°C).

Other Type Discs

In addition to the standard type rupture discs, there are also special type discs which can be produced in variable types according to engineering requirements.

Custom Solutions

Many customer applications cannot be met using standard type rupture discs. In such cases special solutions are needed. A wide range of explosion discs are available with special fittings for demanding applications such as ultra high vacuum, OEM markets, military, aerospace and many other applications.

Ultra-Low & Bi-Directional Discs

Sanitary Discs

RAUS

Sanitary High Performance Reverse-Acting Metal Rupture Disks. Mounts using industry standard components.

RLPS

Sanitary High Performance Reverse-Acting Metal Rupture Disks. Mounts using industry standard components.

SD

Sanitary High Performance Graphite Rupture Disks. Mounts using industry standard components.

Extrusion Burst Plugs

EBP

Extrusion Burst Plugs are pressure relief devices designed for over-pressure protection of plastic extrusion processes.

Transportation / Railcar Rupture Disks

ICP

Designed for overpressure protection for Intermodal Tank Containers.

TCP

Designed for overpressure protection for Railroad Tank Cars and Tanker Trailers.

Holders

Disc holders are not required by all standards, but most applications. The biggest advantages of using a disk holder can be listed as follows;

  • Simple assembly
  • Excellent metal-to-metal sealing
  • All flange standards and special designs are available
  • Available in a wide range of materials

Plug Type Rupture Discs

It is a two-piece unit consisting of a base flange (inlet) and a fixing flange (outlet). The flat or 30 ° angled housing surfaces of these flanges are machined to grasp the bursting discs. When mounted, the top of the disc (domed portion) protrudes from the fixing flange and is metal-to-metal sealed.

PTFE

The PTFE Sleeved holder utilizes a Teflon Encapsulated Viton O-Ring as standard. Ideal for corrosive applications and relieving the effect of product build-up.

RAH

Pre-Torque holder design allows removal of the assembly from the piping system for inspection without disturbing the seal intensity of the rupture disk.

UHZ

The UHZ Type Rupture Disk (bursting disc) Holder is an insert type holder for flat seat style rupture disks (bursting discs).

Screw Type Rupture Disc

Such holders have inlet and outlet elements which are screwed together with the bursting discs. The output element is also available in closed outlet design.

Graphite Screw Type (GST)

Designed for use with Inverted Type rupture disks. Ideal for pressure ratings from 20 psig (1.38 barg) to 1000 psig (68.97 barg).

Screw Type Holder

Screw-Type are reusable type holders available in standard 30º angel or flat seat designs.

TA Type Discs

One-Time Use Rupture Disk Assemblies. Brass unit that comes pre-assembled with Rupture Disk and tested to meet your relieving pressure requirements.

Accessories

Burst Sensors & Indicators

Rupture indicators are used to provide immediate notification of rupture disc activation or disc leakage. Depending on the selected device, rupture indicators can be used to activate alarms, horns, remote warning devices, or interfere with existing control systems to ensure appropriate safety measures are taken.

BA

Re-usable Rupture Disk Burst Sensor. Over-pressure indication for rupture disk or relief valve applications

BI

Integral Rupture Disk Burst Indication. Over-pressure indication for rupture disk or explosion vent applications.

RDI

The Rupture Disk (bursting disc) Indicator or RDI Series is a simple and effective means of indicating when the process media ruptures a disk or opens a safety relief valve.

Tell-Tale Indicator

Used to monitor the space between a rupture disk (bursting disc) and safety relief valve or the presence of backpressure in a header system.

Tell-Tale Indicator

Gaskets

Gaskets are used to provide sealing and insulation. Sealing elements are used in leather, cork felt, lead, plastic, asbestos, paper, construction insulation and pipelines and chemical materials.

Pipe End Covers

The PG Series Pipe End Covers install without tools and are meant to withstand severe weather conditions like rain, ice and snow and seals out insects, birds, nests, sand, dust and salt spray.

Downloads

Rupture Disc Selection Guide
Zook Product Catalog
Rupture Disc Handbook
Rupture Disc Applicaitons
Zook Differentiators
SKID Safe
Relief Valve Isolation
Rustore Disc Sizing
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