---
title: "Fume Extraction Hood"
industry: "Rubber and Plastic Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FUME_EXTRACTION_HOOD"
  data_integrity_hash: "5c3e0353036fc4942e4ed654ca3d8926"
  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:FUME_EXTRACTION_HOOD"
  data_source_uri: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/fume-extraction-hood.md"
  official_resource_url: "https://cnfx.com/industry/rubber-and-plastic-product-manufacturing/product/fume-extraction-hood"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 m/s capture velocity at hood face"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.25
    unit: "m"
    consequence: "Boundary layer separation due to insufficient momentum transfer from hood airflow to contaminant plume, governed by the Navier-Stokes equations with Reynolds number &lt; 2000 in capture zone"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Ductwork pressure drop exceeding 750 Pa due to particulate accumulation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install differential pressure sensors with automated damper control maintaining 400-600 Pa system pressure"
  - node_2:
      trigger: "Thermal expansion mismatch between 304 stainless steel hood (17.3 μm/m·K) and aluminum mounting frame (23.1 μm/m·K)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Incorporate Inconel 625 expansion joints with 12.8 μm/m·K coefficient"
bom_nodes:
  hood-bodyenclosure:
    type: "part"
    urn: "URN:CNFX:ME:HOOD_BODYENCLOSURE"
    interface_type: "physical-logic-coupled"
  capture-baffleskirt:
    type: "component"
    urn: "URN:CNFX:ME:CAPTURE_BAFFLESKIRT"
    interface_type: "physical-logic-coupled"
  duct-flange:
    type: "component"
    urn: "URN:CNFX:ME:DUCT_FLANGE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 5167-1:2022 MEASUREMENT OF FLUID FLOW BY MEANS OF PRESSURE DIFFERENTIAL DEVICES"
    scope: "Verified Engineering Specification"
  - standard: "ANSI Z9.5-2022 LABORATORY VENTILATION"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 14175-2:2019 FUME CUPBOARDS - SAFETY AND PERFORMANCE REQUIREMENTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/fume-extraction-hood.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "692833ae312b9fb7ed8694c900244087fe9e5eeed203b874473774cc260c511b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Fume Extraction Hood

## 1. Technical Definition
A ventilation component designed to capture and remove fumes, vapors, and airborne particles generated during industrial processes.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 m/s capture velocity at hood face**. Failure boundary: **Capture velocity drops below 0.25 m/s at process source**, Mechanism: **Boundary layer separation due to insufficient momentum transfer from hood airflow to contaminant plume, governed by the Navier-Stokes equations with Reynolds number &lt; 2000 in capture zone**.

### 2.1 Analytical Physics Model
Governed by the **Darcy-Weisbach Pressure Drop**:

> **Primary Equation**: $\Delta P = f \cdot \frac{L}{D} \cdot \frac{\rho v^2}{2}$  
> **Engineering Impact**: Critical for sizing CIP (Clean-In-Place) pump heads.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| f | Friction Factor | Engineering Constant |
| L | Pipe Length | Engineering Constant |
| v | Velocity | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Ductwork pressure drop exceeding 750 Pa due to particulate accumulation | 8 | Static pressure imbalance causing flow reversal at hood face | Install differential pressure sensors with automated damper control maintaining 400-600 Pa system pressure |
| Thermal expansion mismatch between 304 stainless steel hood (17.3 μm/m·K) and aluminum mounting frame (23.1 μm/m·K) | 8 | Structural deformation exceeding 3 mm at 150°C operating temperature | Incorporate Inconel 625 expansion joints with 12.8 μm/m·K coefficient |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Hood Body/Enclosure](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hood-bodyenclosure.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Industrial Exhaust Fan**, **Ductwork System**, **Air Filtration Unit**  
**Downstream Applications**: Rubber Tires, Plastic Containers, Automotive Parts  

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

### Q: What materials are best for fume extraction hoods in rubber manufacturing?
**A**: Stainless steel (SS304) offers durability and corrosion resistance, powder-coated mild steel provides cost-effective protection, and polypropylene (PP) is ideal for chemical resistance against harsh fumes in rubber and plastic processing.

### Q: How does a fume extraction hood capture airborne contaminants?
**A**: The hood uses a capture baffle/skirt to contain fumes at the source, while the enclosure directs them through the duct flange into ventilation systems, effectively removing hazardous particles and vapors from the work environment.

### Q: Can this extraction hood handle high-temperature processes in plastic manufacturing?
**A**: Yes, stainless steel and powder-coated steel models withstand high temperatures common in plastic extrusion and molding, while PP hoods are suitable for chemical fume extraction at moderate temperatures.

## 6. Manufacturing Compliance
- ISO 5167-1:2022 MEASUREMENT OF FLUID FLOW BY MEANS OF PRESSURE DIFFERENTIAL DEVICES
- ANSI Z9.5-2022 LABORATORY VENTILATION
- DIN EN 14175-2:2019 FUME CUPBOARDS - SAFETY AND PERFORMANCE REQUIREMENTS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Fume Extraction Hood](https://cnfx.com/industry/rubber-and-plastic-product-manufacturing/product/fume-extraction-hood)**

### 🌐 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**: FUME_EXTRACTION_HOOD | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8e93a111
