Find a practical starting point for your rupture disk project. Explore BasCo product families, compare protection approaches, and access focused guides on pressure, materials, applications, and quality.
Start with your process conditions. A rupture disk needs the right opening behavior, pressure and temperature basis, material compatibility, and relief capacity. Use this hub to build a shortlist, then review the complete disk-and-holder assembly for your application.
A rupture disk, also called a rupture disc or bursting disc, is a non-reclosing pressure-relief device. Its pressure-sensitive element opens at a specified differential pressure under defined temperature conditions. Once it opens, the disk must be replaced before the system returns to service.
A disk may provide a dedicated relief path or work with a pressure relief valve. The right arrangement depends on the process, the required discharge behavior, and the complete protection system. The pressure on both sides of the disk matters, especially when the outlet connects to a closed header.
Understand how a non-reclosing pressure-relief device works and where it fits in a protection system.
Read the guideCompare a single-use disk with a reclosing valve, and explore when a combined arrangement deserves review.
Read the guideDisk or valve? A rupture disk opens once; a relief valve is designed to reclose. A combined arrangement requires review of opening behavior, flow capacity, and pressure in the space between the devices. Explore rupture disk and pressure relief valve selection before choosing an arrangement.
Use the four product entries below to compare forward-acting and reverse-acting construction. Each image and product title opens the corresponding BasCo product page. Confirm the pressure range, material, fluid phase, holder, and service limits for the exact configuration before ordering.
Explore a scored forward-acting design and its published configuration options.
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Review the composite construction and confirm the requirements for your process medium.
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Explore a reverse-acting scored design and review the applicable service conditions.
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Review this reverse-acting series and discuss the required disk-and-holder configuration.
View product →A forward-acting design loads the membrane in tension. A reverse-acting design loads the dome in compression before it reverses and opens. A composite design uses multiple functional layers. These differences help frame the review, but type alone does not establish suitability.
| Construction | Starting point | Questions to confirm |
|---|---|---|
| Forward-acting scored | Explore a tension-loaded disk with a defined score pattern. | What operating margin, cycling capability, and vacuum support does this configuration require? |
| Forward-acting composite | Review the functions of the pressure-bearing and sealing layers. | Are all wetted layers compatible with the fluid, cleaning agents, and temperature? |
| Reverse-acting | Explore a compression-loaded dome and its opening mechanism. | Is the exact design qualified for the fluid phase, pressure cycles, vacuum, and downstream arrangement? |
For a closer comparison, read Forward-Acting vs. Reverse-Acting Designs. Operating-ratio limits and opening characteristics belong to the selected model and configuration; they should not be transferred to an entire product family.
Compare loading direction, opening behavior, pressure cycling, and the checks needed for each design.
Read the guideStart with a defined relief duty and a record of the operating conditions. The following route helps you gather the information needed for a useful product discussion. For the detailed technical review, use the Complete Rupture Disk Selection Guide.
Specified burst pressure, marked burst pressure, manufacturing design range (MDR), and burst tolerance describe different parts of the specification. MDR concerns the permitted manufacturing range for the marked value. Burst tolerance concerns the permitted burst-test variation around the marked pressure at the stated temperature. A nominal pressure alone does not describe the full acceptance envelope.
Make the pressure and temperature basis clear in your inquiry. Use the dedicated burst pressure tolerance guide to understand how the requested value, product marking, and test limits fit together.
Identify the medium, concentration, contaminants, cleaning chemicals, and thermal conditions. A material name alone is not a compatibility check. The sealing layer and holder deserve attention alongside the disk membrane, particularly when heat or corrosive exposure governs the selection.
Use the material selection resource to organize the component review, and the high-temperature and corrosive-media guide when the service conditions need a closer assessment.
Work through type, pressure, temperature, medium, relief capacity, size, and holder requirements.
Read the guideSeparate specified pressure, marked pressure, manufacturing design range, and permitted burst-test variation.
Read the guideExplore material choices for the membrane, seal, liner, and holder before preparing a specification.
Read the guideFocus on demanding thermal and chemical conditions that can change the suitability of a disk assembly.
Read the guideRupture disks can form part of protection arrangements for reactors, heat exchangers, and other pressure equipment. Equipment name alone does not define the relief requirement. The review must connect the process upset to the necessary relief path and discharge conditions.
| Application | Questions for the project team | Review focus |
|---|---|---|
| Chemical reactors | Which reaction upset governs the relief duty? Can solids, fouling, or multiple phases occur? | Relief scenario, opening behavior, material compatibility, and discharge routing. |
| Heat exchangers | Can pressure transfer between sides or trapped-fluid heating create an overpressure condition? | Pressure basis, required relieving rate, fluid properties, and installation space. |
| Corrosive process systems | Which surfaces contact the process or cleaning medium? | Membrane, seal, liner, holder, and gasket compatibility. |
| Disk and relief valve combinations | How will the intermediate space be monitored, and can disk opening affect the valve? | Pressure communication, flow capacity, and compatible opening behavior. |
Review protection needs around reactors, heat exchangers, and other process equipment.
Read the guideShare your medium, operating conditions, and relief arrangement with BasCo. A focused inquiry makes it easier to discuss suitable product families and the information still needed for selection.
BasCo's quality-control resource describes controls from incoming material through manufacturing, inspection, testing, marking, and delivery. For your order, agree on the required evidence and identification so the supplied configuration can be linked to its material and production records.
Leak checks and burst testing answer different questions. Burst testing consumes the tested sample; production-lot qualification should be understood through the applicable sampling and acceptance requirements. Request the documentation that matches your technical specification.
Corrosion, repeated pressure loading, handling damage, incorrect orientation, and installation errors can affect disk performance. Use the specified holder and installation instructions, and check replacement practices against the actual operating history. An unexpected opening calls for investigation before simply fitting another disk of the same nominal rating.
State the governing equipment code, required edition, installation jurisdiction, and project documentation requirements. ASME, ISO, and PED resources can help frame the discussion, but the order must identify the requirements that apply to the supplied device. Ask for evidence covering the exact product and configuration.
Follow material verification, manufacturing controls, inspection, performance testing, and traceable delivery.
Read the guideInvestigate corrosion, pressure fatigue, installation damage, and other causes of unexpected performance.
Read the guideUse this introduction to frame the standards and documentation questions for your project.
Read the guidePrepare one clear data set for the process, mechanical, and purchasing teams. Identify values that are confirmed and values still under review, and include units so that preliminary assumptions do not become unintended order requirements.
Use the complete selection guide to expand this starting checklist for your project. Include the existing product marking and holder details when discussing a replacement.
No. A rupture disk is a non-reclosing device. Replace the activated disk, inspect the assembly as required, and establish why it opened before returning the system to service.
No single construction fits every service. Review the exact design against pressure, temperature, phase, cycling, materials, and the installation arrangement. The design comparison is a useful starting point.
Pipe diameter is only one input. The assembly must also meet the relief duty and flow requirements. Review the req
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2026-09-01Rupture Disk Selection Guide: How to Choose the Right Type, Pressure, Material, and Size
2026-08-25Copyright © Jiangsu Bafang Safety Device Co., LTD. All Rights Reserved
