Vacuum Support: Temperature Range -40°C to 400°C

Component Specifications

Definition

A specialized structural component integrated into rupture disc assemblies designed to provide mechanical support against reverse buckling when the system experiences vacuum conditions. It maintains disc integrity during negative pressure differentials while allowing normal forward rupture operation during overpressure events.

Working Principle

Operates by providing a rigid support structure on the vacuum side of the rupture disc. During normal operation or overpressure events, the component remains passive. When vacuum conditions occur, it prevents the disc from collapsing inward by distributing the negative pressure load across its engineered surface, maintaining the disc's position and preventing premature failure or reverse buckling.

Materials

Stainless steel 316L, Hastelloy C-276, or Inconel 625 depending on process media compatibility; Surface finish: Ra ≤ 0.8 μm; Corrosion resistance: ASTM G48 Method A compliant

Technical Parameters

Parameter	Typical range	Notes & selection driver
Mounting Type	Flanged or threaded
Pressure Rating	-1.0 to 0 bar (vacuum support range)
Vacuum Hold Time	≥ 24 hours at full vacuum
Temperature Range	-40°C to 400°C
Support Surface Area	70-85% of disc area
Flow Coefficient (Cv)	≥ 0.98

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

Standards

ISO 4126-2, ASME BPVC Section VIII, DIN 3320

Parent Products

This component is used in the following industrial products

Rupture Disc (if applicable)

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

View Product Details

Engineering Analysis

Risks & Mitigation

Material incompatibility with process media
Improper installation causing flow restriction
Fatigue failure from cyclic vacuum conditions
Corrosion reducing structural integrity

FMEA Triads

Trigger: Corrosive process media
Failure: Material degradation and loss of structural support
Mitigation: Select corrosion-resistant alloys matching process compatibility charts and implement regular inspection schedules

Trigger: Excessive particulate accumulation
Failure: Flow restriction and pressure drop across the component
Mitigation: Install upstream filtration and implement cleaning protocols based on process conditions

Trigger: Thermal cycling beyond design limits
Failure: Metal fatigue and crack formation
Mitigation: Ensure operating temperatures remain within specified range and consider thermal expansion in system design

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance: ±0.1 mm on critical surfaces; Pressure tolerance: ±2% of rated vacuum support capacity

Test Method

Vacuum hold test per ISO 4126-2 Annex B, helium leak test at 1×10⁻⁹ mbar·L/s, dimensional verification per ASME Y14.5

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Vacuum Support

Manufacturer profiles associated with Vacuum Support.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of a vacuum support in rupture disc systems?

The vacuum support prevents reverse buckling of the rupture disc when the system experiences vacuum conditions, maintaining disc integrity and preventing premature failure while allowing normal overpressure rupture operation.

Can vacuum support components be used with all types of rupture discs?

No, they are specifically designed for reverse buckling discs and some composite disc designs. They are not compatible with forward-acting discs or scored discs without proper engineering evaluation.

How does vacuum support affect the burst pressure accuracy of rupture discs?

Properly designed vacuum supports maintain burst pressure accuracy within ±5% when tested according to ISO 4126-2 standards, as they are engineered to disengage during forward pressure events.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Vacuum Support