Rupture Disc for Overpressure Protection | Chemical Manufacturing Component

Product Specifications

Technical details and manufacturing context for Rupture Disc (if applicable)

Definition

A rupture disc is a critical safety component within a pressure relief system that acts as a sacrificial membrane. When system pressure exceeds the disc's calibrated burst pressure, it ruptures completely to rapidly release pressure and prevent catastrophic failure of vessels, piping, or other pressurized equipment. It provides a leak-tight seal under normal operating conditions and offers instantaneous full-bore relief when activated. This product is a component used in chemical manufacturing and other industries where overpressure protection is required. The disc is available in materials such as stainless steel, nickel alloys, graphite, tantalum, and Hastelloy, each offering different corrosion resistance and temperature capabilities. Key parameters include a burst pressure range of 0.1–10 MPa with a burst tolerance of ±5%, an operating temperature range of -40 to 200°C, and nominal diameters from 15 to 600 mm. The flow coefficient (Kd) ranges from 0.62 to 0.75, and leak tightness is ≤1×10⁻⁵ mbar·L/s. The cycle life is rated at 10,000 cycles, and weight varies from 0.5 to 50 kg depending on size and material. These values are reference ranges and must be verified for the specific model and application. Standards such as ISO 4126-2 and ASTM A240/B575 are referenced for procurement and verification, but do not imply certification. Always confirm model-specific values and standards with the legal manufacturer or supplier before installation.

Working Principle

The rupture disc functions as a precisely engineered membrane calibrated to fail at a specific pressure differential (typically set pressure plus tolerance). Under normal conditions, it maintains system integrity. When pressure reaches the burst rating, the disc material undergoes plastic deformation and tensile failure, creating an opening for pressure release. Once ruptured, it cannot reseal and must be replaced. The disc is designed to provide full-bore relief, minimizing pressure drop and ensuring rapid response. Selection requires knowing the system design pressure, operating temperature, and required relief capacity. The burst pressure range and tolerance must be matched to the application, and the material chosen based on corrosion resistance and temperature limits. Verification questions include confirming the burst pressure setting, checking compatibility with process media, and ensuring the disc size matches the piping or vessel connection. Maintenance signals include visual inspection for deformation, corrosion, or leakage, and replacement after any rupture event.

Common Materials

Stainless Steel, Nickel Alloys, Graphite, Tantalum, Hastelloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Burst Pressure Range	0.1–10 MPa	Select within range based on system design pressure.ISO 4126-2
Burst Tolerance	±5 %	Tighter tolerance available for precision applications.ISO 4126-2
Operating Temperature Range	-40–200 °C	Material selection may limit upper temperature.
Nominal Diameter	15–600 mm	Standard sizes; custom sizes available.ISO 4126-2
Material	SS316L, Hastelloy C-276, Inconel 625	Corrosion resistance depends on material.ASTM A240, ASTM B575
Minimum Burst Pressure	0.1 MPa	Below this, manufacturing tolerance may not be achievable.ISO 4126-2
Maximum Burst Pressure	10 MPa	Above this, consider alternative designs.ISO 4126-2
Flow Coefficient (Kd)	0.62–0.75	Affects relief capacity; verify with manufacturer.ISO 4126-2
Leak Tightness	≤1×10⁻⁵ mbar·L/s	Helium leak test standard.ISO 4126-2
Cycle Life	10000 cycles	Number of pressure cycles before fatigue failure.
Weight	0.5–50 kg	Depends on size and material.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Dome
Pressure-bearing membrane that deforms and ruptures at set pressure

Material: Metal alloy or composite
Holder/Flange Part
Secures the disc in place and provides sealing surface

Material: Carbon steel or stainless steel
Vacuum Support Optional Part
Prevents disc collapse under vacuum conditions (if applicable)

Material: Stainless steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Pressure Relief Device

View system integration details

Manufacturers of Rupture Disc (if applicable)

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Frequently Asked Questions

What is the burst pressure range for this rupture disc?

The burst pressure range is 0.1 to 10 MPa, with a tolerance of ±5%. However, the exact burst pressure must be selected based on the system design pressure and verified with the manufacturer for the specific model.

What materials are available for this rupture disc?

Available materials include stainless steel, nickel alloys, graphite, tantalum, and Hastelloy. The choice depends on corrosion resistance and temperature requirements. Confirm material compatibility with your process media.

Can this rupture disc be reused after activation?

No, the rupture disc is a non-reclosing device. Once it bursts, it cannot reseal and must be replaced. Inspect the disc regularly for signs of fatigue or damage.

What standards apply to this rupture disc?

The product references ISO 4126-2 for burst pressure, tolerance, and other parameters, and ASTM A240/B575 for material specifications. These standards serve as procurement references; always verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Typically 0.1 to 10,000 psig, burst pressure accuracy ±2-5%
other spec:	Flow capacity: ASME certified flow coefficients (Kd), Slurry concentration: Limited to clean media or with protective coatings
temperature:	-20°C to 400°C (standard), up to 800°C with special materials

Rupture Disc (if applicable)

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards