INDUSTRY COMPONENT

Disc Membrane

Disc membrane is a thin, precisely engineered safety component in rupture disc assemblies that bursts at predetermined pressure to prevent equipment overpressure.

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Component Specifications

Definition
A disc membrane is the critical pressure-sensitive element within a rupture disc assembly, designed to fail at a specific burst pressure to provide instantaneous pressure relief in industrial systems. It functions as a non-reclosing safety device that protects vessels, pipelines, and equipment from catastrophic overpressure events by creating a full-bore opening when the system pressure exceeds the membrane's calibrated burst rating.
Working Principle
The disc membrane operates on the principle of controlled mechanical failure under pressure. When system pressure reaches the predetermined burst pressure, the membrane undergoes plastic deformation and tensile failure, creating an opening that allows rapid pressure release. The burst pressure is precisely calibrated through material selection, thickness, scoring patterns, and manufacturing processes to ensure reliable performance at the specified set point.
Materials
Stainless steel (304, 316, 321, 347), Inconel (600, 625), Monel, Hastelloy, Nickel, Titanium, Graphite, Tantalum, Platinum, Silver, Aluminum, with material selection based on corrosion resistance, temperature range, and burst pressure requirements.
Technical Parameters
  • Size Range 1/2" to 48" diameter
  • Response Time Milliseconds
  • Leak Tightness Bubble-tight to 10^-9 std cc/sec
  • Surface Finish Ra 0.4 to 1.6 μm
  • Burst Tolerance ±2% to ±5% of rated burst pressure
  • Scoring Pattern Cross, star, circular, or custom
  • Burst Pressure Range 0.1 psi to 100,000 psi
  • Operating Temperature Range -268°C to +538°C
Standards
ISO 4126-2, ASME BPVC Section VIII, PED 2014/68/EU, AD 2000, DIN EN ISO 4126-2

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Disc Membrane.

disc membrane rupture disc membrane pressure relief membrane burst disc safety membrane overpressure protection pressure relief device industrial safety component Disc Membrane in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Rupture Disc

A non-reclosing pressure relief device designed to burst at a predetermined pressure to protect equipment from overpressure.

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Engineering Analysis

Risks & Mitigation
  • Premature burst due to corrosion or fatigue
  • Failure to burst at set pressure
  • Fragmentation causing downstream contamination
  • Incorrect installation affecting performance
  • Temperature extremes altering burst characteristics
FMEA Triads
Trigger: Material corrosion from process media
Failure: Premature burst or failure to burst
Mitigation: Select corrosion-resistant materials, apply protective coatings, implement regular inspection protocols
Trigger: Fatigue from pressure cycling
Failure: Premature burst below set pressure
Mitigation: Use reverse-acting designs for pulsating pressure, install pulsation dampeners, limit pressure cycling frequency
Trigger: Installation errors or damage
Failure: Leakage or incorrect burst pressure
Mitigation: Follow manufacturer installation guidelines, use proper torque specifications, implement installation verification procedures

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Burst pressure tolerance typically ±2% to ±5% as per ASME and ISO standards, with tighter tolerances available for critical applications
Test Method
Hydrostatic or pneumatic burst testing per ASME BPVC Section VIII Div 1 UG-127, ISO 4126-2, with certified test reports including actual burst pressure, temperature, and media

Buyer Feedback

★★★★☆ 4.6 / 5.0 (23 reviews)

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Disc Membrane meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Disc Membrane arrived with full certification."

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Frequently Asked Questions

What is the difference between forward-acting and reverse-acting disc membranes?

Forward-acting membranes burst under pressure applied to the concave side, while reverse-acting membranes burst under pressure applied to the convex side, offering different performance characteristics for specific applications.

How often should disc membranes be replaced?

Disc membranes should be replaced after each burst event as they are non-reclosing devices. Regular inspection intervals (typically 6-12 months) are recommended to check for corrosion, fatigue, or damage that could affect performance.

Can disc membranes be used with corrosive media?

Yes, by selecting appropriate corrosion-resistant materials like Hastelloy, Tantalum, or PTFE-coated metals based on the specific chemical compatibility requirements of the application.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Disc Holder/Stem Disc/Ball