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Holder/Flange Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A Holder/Flange is a precision-engineered mechanical component designed to securely mount and seal a rupture disc within a pressure relief system. It consists of mating flanges that clamp the rupture disc in place, providing a leak-tight seal while allowing the disc to burst at its designated pressure rating. The component typically includes inlet and outlet flanges, gaskets, and bolting assemblies to maintain structural integrity under varying pressure and temperature conditions.

Working Principle

The Holder/Flange operates by creating a sealed assembly where the rupture disc is clamped between two flanges using bolts. This assembly maintains pressure integrity until the disc's burst pressure is exceeded, at which point the disc fractures to relieve pressure. The flanges distribute clamping forces evenly to prevent leakage and ensure the disc responds accurately to pressure changes.

Materials

Common materials include carbon steel (ASTM A105), stainless steel (ASTM A182 F304/F316), alloy steel, or nickel alloys for corrosive environments. Gaskets are typically graphite, PTFE, or spiral-wound metal.

Technical Parameters

Face Type RF, FF, RTJ
Size Range DN15 to DN600
Bolt Pattern ASME B16.5
Pressure Rating Up to 10,000 psi
Temperature Range -50°C to 400°C

Standards

ISO 4126-1, ASME BPVC Section VIII, DIN 3320, API 520

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Holder/Flange.

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

Improper installation causing leakage
Material incompatibility with process media
Over-torquing bolts damaging flanges

FMEA Triads

Trigger: Corrosion from aggressive media
Failure: Flange degradation leading to leaks
Mitigation: Use corrosion-resistant materials and protective coatings

Trigger: Incorrect bolt torque
Failure: Uneven sealing causing premature disc failure
Mitigation: Follow manufacturer torque specifications and use calibrated tools

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Dimensional tolerances per ASME B16.5, surface finish Ra ≤ 3.2 μm for sealing surfaces

Test Method

Hydrostatic/pneumatic testing per ASME BPVC, helium leak testing for critical applications

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the purpose of a Holder/Flange in rupture disc systems?

It provides secure mounting and sealing for the rupture disc, ensuring proper pressure containment and accurate burst performance.

Can Holders/Flares be reused after a rupture disc bursts?

Yes, if undamaged. The holder is typically reusable after replacing the ruptured disc and inspecting for wear or deformation.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Holder/Flange