---
title: "Holder/Flange Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:HOLDERFLANGE_ASSEMBLY"
  data_integrity_hash: "58715845b6b921df3454bcfee3f2f1ec"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:HOLDERFLANGE_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/holderflange-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/holderflange-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 bar at 20-150°C"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 180
    unit: "bar"
    consequence: "Yield strength of ASTM A182 F316L flange material (205 MPa) exceeded, causing plastic deformation and seal failure"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Cyclic pressure fluctuation above 100 bar at 5 Hz frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement ASME BPVC Section VIII Division 2 fatigue analysis with 10^6 cycle design life"
  - node_2:
      trigger: "Corrosive process fluid with chloride concentration &gt;25 ppm at 80°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Apply duplex stainless steel UNS S31803 material with PREN &gt;40 for chloride resistance"
bom_nodes:
  top-flange:
    type: "component"
    urn: "URN:CNFX:ME:TOP_FLANGE"
    interface_type: "physical-logic-coupled"
  bottom-flange:
    type: "component"
    urn: "URN:CNFX:ME:BOTTOM_FLANGE"
    interface_type: "physical-logic-coupled"
  holder-ring:
    type: "component"
    urn: "URN:CNFX:ME:HOLDER_RING"
    interface_type: "physical-logic-coupled"
  stud-bolts:
    type: "component"
    urn: "URN:CNFX:ME:STUD_BOLTS"
    interface_type: "physical-logic-coupled"
  gaskets:
    type: "component"
    urn: "URN:CNFX:ME:GASKETS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/holderflange-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "ad794b9676f3625eee8d964db8627b5eac873a684ab894f17250e4784da992e9"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Holder/Flange Assembly

## 1. Technical Definition
A mechanical assembly that secures and seals a rupture disc within a pressure system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 bar at 20-150°C**. Failure boundary: **Exceeds 180 bar burst pressure or 200°C thermal limit**, Mechanism: **Yield strength of ASTM A182 F316L flange material (205 MPa) exceeded, causing plastic deformation and seal failure**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Cyclic pressure fluctuation above 100 bar at 5 Hz frequency | 8 | High-cycle fatigue crack initiation at flange-to-holder weld interface | Implement ASME BPVC Section VIII Division 2 fatigue analysis with 10^6 cycle design life |
| Corrosive process fluid with chloride concentration &gt;25 ppm at 80°C | 8 | Stress corrosion cracking in 316L stainless steel flange material | Apply duplex stainless steel UNS S31803 material with PREN &gt;40 for chloride resistance |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pressure Testing System**, **Torque Wrench Calibration Station**, **Leak Detection Equipment**  
**Downstream Applications**: Pressure Vessels, Chemical Processing Systems, Oil and Gas Pipeline Components  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are available for the Holder/Flange Assembly?
**A**: Our Holder/Flange Assemblies are manufactured in both Carbon Steel and Stainless Steel to suit different pressure system requirements and environmental conditions.

### Q: What components are included in the Holder/Flange Assembly BOM?
**A**: The assembly includes Top Flange, Bottom Flange, Holder Ring, Stud Bolts, and Gaskets - all designed to work together for secure rupture disc installation and sealing.

### Q: How does the Holder/Flange Assembly improve pressure system safety?
**A**: The assembly provides a secure, leak-proof mounting for rupture discs, ensuring proper activation during overpressure events while maintaining system integrity under normal operating conditions.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Holder/Flange Assembly](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/holderflange-assembly)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: HOLDERFLANGE_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 4261b808
