---
title: "Permeate Tube"
industry: "Chemical Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PERMEATE_TUBE"
  data_integrity_hash: "eca7cb4b12c8d28a32021f0966f4ce5b"
  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:PERMEATE_TUBE"
  data_source_uri: "https://cnfx.com/llms/industry/chemical-manufacturing/product/permeate-tube.md"
  official_resource_url: "https://cnfx.com/industry/chemical-manufacturing/product/permeate-tube"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-6.0 MPa (1-60 bar)"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 7.2
    unit: "MPa"
    consequence: "Von Mises yield criterion exceeding material yield strength (σ_y = 205 MPa) leading to permanent deformation and seal failure"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Chloride ion concentration exceeding 100 ppm in feedwater at 60°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Replace 316L with duplex 2205 stainless steel (PREN &gt; 35) for chloride resistance"
  - node_2:
      trigger: "Transient pressure surge of 8.5 MPa (85 bar) during backwash cycle"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 0.5 m³ surge tank with 0.5 second response time pressure relief valve"
bom_nodes:
  tube-body:
    type: "component"
    urn: "URN:CNFX:ME:TUBE_BODY"
    interface_type: "physical-logic-coupled"
  perforationsslots:
    type: "component"
    urn: "URN:CNFX:ME:PERFORATIONSSLOTS"
    interface_type: "physical-logic-coupled"
  end-connectors:
    type: "component"
    urn: "URN:CNFX:ME:END_CONNECTORS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - EU REGULATION 305/2011 FOR CONSTRUCTION PRODUCTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/chemical-manufacturing/product/permeate-tube.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "aaa5e505b11fe1c59047c3bd1bd8fdb6f938237c2b98748c806a6950e6b9b242"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Permeate Tube

## 1. Technical Definition
A tubular component within pressure vessels designed to collect and channel permeate (filtered fluid) from filtration membranes.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-6.0 MPa (1-60 bar)**. Failure boundary: **7.2 MPa (72 bar) internal pressure causing plastic deformation in 316L stainless steel**, Mechanism: **Von Mises yield criterion exceeding material yield strength (σ_y = 205 MPa) leading to permanent deformation and seal failure**.

### 2.1 Analytical Physics Model
Governed by the **Hansen Solubility Distance (HSP)**:

> **Primary Equation**: $R_a = \sqrt{4\Delta\delta_d^2 + \Delta\delta_p^2 + \Delta\delta_h^2}$  
> **Engineering Impact**: Predicts seal/gasket swelling when exposed to CIP chemicals.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| \delta_d | Dispersive | Engineering Constant |
| \delta_p | Polar | Engineering Constant |
| \delta_h | Hydrogen | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Chloride ion concentration exceeding 100 ppm in feedwater at 60°C | 8 | Stress corrosion cracking initiating at weld seams | Replace 316L with duplex 2205 stainless steel (PREN &gt; 35) for chloride resistance |
| Transient pressure surge of 8.5 MPa (85 bar) during backwash cycle | 8 | Radial expansion exceeding 0.3% strain causing O-ring seal extrusion | Install 0.5 m³ surge tank with 0.5 second response time pressure relief valve |

## 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**: **High-Pressure Pump**, **Membrane Filtration Module**, **Automated Control System**  
**Downstream Applications**: Ultrapure Water, Concentrated Chemical Solutions, Processed Industrial Fluids  

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

### Q: What materials are commonly used for permeate tubes in chemical manufacturing?
**A**: Permeate tubes are typically manufactured from corrosion-resistant materials including Stainless Steel (such as 316L), Fiber-Reinforced Plastic (FRP), and PVC-U to withstand harsh chemical environments.

### Q: What are the key components of a permeate tube assembly?
**A**: A standard permeate tube assembly consists of three main components: the Tube Body, End Connectors for secure attachment, and Perforations or Slots along the tube to allow filtered fluid (permeate) to enter.

### Q: How does a permeate tube function within a pressure vessel filtration system?
**A**: The permeate tube is installed inside a pressure vessel housing filtration membranes. It collects the filtered fluid (permeate) that passes through the membranes via its perforations/slots and channels it out of the vessel through the end connectors.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - EU REGULATION 305/2011 FOR CONSTRUCTION PRODUCTS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Permeate Tube](https://cnfx.com/industry/chemical-manufacturing/product/permeate-tube)**

### 🌐 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**: PERMEATE_TUBE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 9149a41c
