---
title: "Flange Housing"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FLANGE_HOUSING"
  data_integrity_hash: "0e6d33f0cf905f0c479b78f09c5f8fce"
  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:FLANGE_HOUSING"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/flange-housing.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/flange-housing"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-25 bar pressure differential, -40°C to 150°C temperature range, 0.05-0.15 mm flange deflection tolerance"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 28
    unit: "bar"
    consequence: "Von Mises stress exceeding 250 MPa yield strength of ASTM A36 steel, differential thermal expansion exceeding 0.012 mm/°C coefficient mismatch, creep deformation at sustained temperatures above 120°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Bolt preload relaxation due to thermal cycling at 100+°C temperature differentials"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Torque-to-yield bolting with Belleville washers maintaining 70% minimum joint preload"
  - node_2:
      trigger: "Corrosive fluid pH below 4.0 attacking 316L stainless steel at 80°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "PTFE-lined flange with 3 mm corrosion allowance and cathodic protection at -0.85 V vs SCE"
bom_nodes:
  flange-face:
    type: "component"
    urn: "URN:CNFX:ME:FLANGE_FACE"
    interface_type: "physical-logic-coupled"
  bolt-holes:
    type: "component"
    urn: "URN:CNFX:ME:BOLT_HOLES"
    interface_type: "physical-logic-coupled"
  sight-glass-recess:
    type: "component"
    urn: "URN:CNFX:ME:SIGHT_GLASS_RECESS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 7005-1:2011 (METALLIC FLANGES)"
    scope: "Verified Engineering Specification"
  - standard: "ASME B16.5:2020 (PIPE FLANGES AND FLANGED FITTINGS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 1092-1:2018 (FLANGES AND THEIR JOINTS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/flange-housing.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "8bd7b79ef06dea1b8e4ed4ab46cd0998ad54721266cda238da448f2891d06696"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Flange Housing

## 1. Technical Definition
A structural component that provides mounting and sealing interface for sight glass assemblies in industrial equipment.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-25 bar pressure differential, -40°C to 150°C temperature range, 0.05-0.15 mm flange deflection tolerance**. Failure boundary: **28 bar pressure differential causing permanent flange deformation, 180°C thermal expansion exceeding bolt yield strength, 0.25 mm flange deflection causing seal extrusion**, Mechanism: **Von Mises stress exceeding 250 MPa yield strength of ASTM A36 steel, differential thermal expansion exceeding 0.012 mm/°C coefficient mismatch, creep deformation at sustained temperatures above 120°C**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Bolt preload relaxation due to thermal cycling at 100+°C temperature differentials | 8 | Gasket compression loss leading to 0.1 mm flange separation and fluid leakage | Torque-to-yield bolting with Belleville washers maintaining 70% minimum joint preload |
| Corrosive fluid pH below 4.0 attacking 316L stainless steel at 80°C | 8 | Pitting corrosion exceeding 0.5 mm depth causing through-wall failure in 2000 hours | PTFE-lined flange with 3 mm corrosion allowance and cathodic protection at -0.85 V vs SCE |

## 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**: **CNC Machining Center**, **Coordinate Measuring Machine**, **Industrial Washing System**  
**Downstream Applications**: Industrial Mixers, Chemical Reactors, Process Tanks  

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

### Q: What materials are available for the flange housing?
**A**: Our flange housing is available in Stainless Steel 316, Carbon Steel, and Alloy Steel to suit various industrial applications and environmental conditions.

### Q: How does the flange housing interface with sight glass assemblies?
**A**: The flange housing provides a precise mounting and sealing interface through its flange face, bolt holes, and sight glass recess, ensuring secure installation and leak prevention.

### Q: What industries commonly use this flange housing component?
**A**: This flange housing is designed for machinery and equipment manufacturing, particularly in industrial settings requiring reliable sight glass mounting in processing equipment, tanks, and monitoring systems.

## 6. Manufacturing Compliance
- ISO 7005-1:2011 (METALLIC FLANGES)
- ASME B16.5:2020 (PIPE FLANGES AND FLANGED FITTINGS)
- DIN EN 1092-1:2018 (FLANGES AND THEIR JOINTS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Flange Housing](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/flange-housing)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: FLANGE_HOUSING | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 3cbb79ee
