---
title: "Pressure Relief Device"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PRESSURE_RELIEF_DEVICE"
  data_integrity_hash: "a52ac3f035c5bd8b7cd5d10bb6ae8295"
  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:PRESSURE_RELIEF_DEVICE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pressure-relief-device.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pressure-relief-device"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-100 bar"
    unit: "bar or psi"
engineering_limits:
  max_safe_operating_point:
    value: 110
    unit: "bar"
    consequence: "Yield strength exceedance of spring material (ASTM A228 music wire, 2150 MPa yield strength) causing permanent deformation"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Corrosion-induced pitting (chloride concentration &gt; 25 ppm)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "316L stainless steel construction with electropolished surfaces"
  - node_2:
      trigger: "Creep deformation at 150°C operating temperature"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Inconel 718 spring material for temperatures up to 650°C"
bom_nodes:
  valve-body:
    type: "part"
    urn: "URN:CNFX:ME:VALVE_BODY"
    interface_type: "physical-logic-coupled"
  spring:
    type: "component"
    urn: "URN:CNFX:ME:SPRING"
    interface_type: "physical-logic-coupled"
  disc-poppet:
    type: "component"
    urn: "URN:CNFX:ME:DISC_POPPET"
    interface_type: "physical-logic-coupled"
  adjustment-cap:
    type: "component"
    urn: "URN:CNFX:ME:ADJUSTMENT_CAP"
    interface_type: "physical-logic-coupled"
  rupture-disc-if-applicable:
    type: "part"
    urn: "URN:CNFX:ME:RUPTURE_DISC_IF_APPLICABLE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pressure-relief-device.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "705322f1c6fa0af4e019847b23935aa68d2df59dbecae75b40f32fd7123e5859"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Pressure Relief Device

## 1. Technical Definition
A safety component designed to automatically release excess pressure from a closed system to prevent equipment failure or rupture.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-100 bar**. Failure boundary: **110 bar (10% above maximum rated pressure)**, Mechanism: **Yield strength exceedance of spring material (ASTM A228 music wire, 2150 MPa yield strength) causing permanent deformation**.

### 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 |
| :--- | :--- | :--- | :--- |
| Corrosion-induced pitting (chloride concentration &gt; 25 ppm) | 8 | Seat leakage at 85% of set pressure | 316L stainless steel construction with electropolished surfaces |
| Creep deformation at 150°C operating temperature | 8 | Premature opening at 92% of set pressure | Inconel 718 spring material for temperatures up to 650°C |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Valve Body](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/valve-body.md) `(Standalone System)`
- [Rupture Disc (if applicable)](https://cnfx.com/llms/industry/chemical-manufacturing/product/rupture-disc-if-applicable.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pressure Testing Station**, **Leak Detection System**, **Calibration Bench**  
**Downstream Applications**: Industrial Boilers, Chemical Processing Vessels, Compressed Air Systems  

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

### Q: What materials are used in your pressure relief devices?
**A**: Our pressure relief devices are constructed from durable materials including stainless steel and carbon steel for the main components, with elastomer seals for reliable pressure containment and release.

### Q: How does a pressure relief device prevent equipment failure?
**A**: The device automatically activates when system pressure exceeds safe limits, releasing excess pressure through components like the disc/poppet or rupture disc to prevent catastrophic equipment rupture or damage.

### Q: What maintenance is required for pressure relief devices?
**A**: Regular inspection of the spring, seals, and disc components is recommended. The adjustment cap allows for pressure setting verification, and the valve body should be checked for corrosion or wear.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Pressure Relief Device](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pressure-relief-device)**

### 🌐 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**: PRESSURE_RELIEF_DEVICE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 4d13a495
