---
title: "Valve Plug"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:VALVE_PLUG"
  data_integrity_hash: "c6ba74f0783854cb20798168cc0bdeb3"
  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:VALVE_PLUG"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/valve-plug.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/valve-plug"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-600 bar differential pressure, -40°C to 400°C fluid temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 450
    unit: "MPa"
    consequence: "Cavitation-induced pitting erosion occurs when local pressure drops below fluid vapor pressure (2.34 kPa for water at 20°C), causing vapor bubble collapse with 1000 MPa microjet impacts"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Fluid particle impingement at velocities exceeding 150 m/s"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Stellite 6 hardfacing (Rockwell C 58 hardness) applied to sealing surfaces"
  - node_2:
      trigger: "Cyclic thermal stress from 200°C temperature differentials during 1000+ daily cycles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Inconel 718 alloy construction with 1034 MPa yield strength at 400°C"
bom_nodes:
  plug-body:
    type: "component"
    urn: "URN:CNFX:ME:PLUG_BODY"
    interface_type: "physical-logic-coupled"
  stem-connection-e-g-threads-pin:
    type: "component"
    urn: "URN:CNFX:ME:STEM_CONNECTION_E_G_THREADS_PIN"
    interface_type: "physical-logic-coupled"
  guiding-surface-e-g-skirt-wings:
    type: "component"
    urn: "URN:CNFX:ME:GUIDING_SURFACE_E_G_SKIRT_WINGS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/valve-plug.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "6f0111c0179eb24a466da27f83dbdcef5262a24f8b607e027a0ac7590320fd3b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Valve Plug

## 1. Technical Definition
The movable component within a control valve that regulates fluid flow by adjusting the orifice opening.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-600 bar differential pressure, -40°C to 400°C fluid temperature**. Failure boundary: **Material yield strength exceeded at 450 MPa stress, or 0.5 mm permanent deformation from seat contact**, Mechanism: **Cavitation-induced pitting erosion occurs when local pressure drops below fluid vapor pressure (2.34 kPa for water at 20°C), causing vapor bubble collapse with 1000 MPa microjet impacts**.

### 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 |
| :--- | :--- | :--- | :--- |
| Fluid particle impingement at velocities exceeding 150 m/s | 8 | Surface erosion exceeding 0.1 mm/year material loss rate | Stellite 6 hardfacing (Rockwell C 58 hardness) applied to sealing surfaces |
| Cyclic thermal stress from 200°C temperature differentials during 1000+ daily cycles | 8 | Thermal fatigue cracking initiating at stress concentration points | Inconel 718 alloy construction with 1034 MPa yield strength at 400°C |

## 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**: **Control Valve Actuator**, **Valve Positioner**, **Process Controller**  
**Downstream Applications**: Industrial Control Valves, Fluid Control Systems, Process Automation Equipment  

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

### Q: What materials are best for valve plugs in corrosive environments?
**A**: Stainless steel grades like 316 or 17-4PH offer excellent corrosion resistance, while Stellite (cobalt-chromium alloy) provides superior performance in highly corrosive or high-temperature applications common in machinery manufacturing.

### Q: How does the valve plug design affect flow control?
**A**: The plug body and guiding surfaces (skirt or wings) precisely regulate fluid flow by adjusting the orifice opening. Proper design ensures accurate flow modulation, minimal turbulence, and reliable performance in control valve systems.

### Q: What are the key specifications to consider when ordering valve plugs?
**A**: Critical specs include material selection (stainless steel, Stellite, or hardened alloy steel), BOM components (plug body, guiding surfaces, stem connection type), dimensional tolerances, pressure ratings, and compatibility with specific valve types and operating conditions.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Valve Plug](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/valve-plug)**

### 🌐 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**: VALVE_PLUG | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: fbadb456
