---
title: "Main Valve Body"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MAIN_VALVE_BODY"
  data_integrity_hash: "c3e4a334d9ec79548b1508f02f63348e"
  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:MAIN_VALVE_BODY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/main-valve-body.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/main-valve-body"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-25.0 bar"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 28.5
    unit: "bar"
    consequence: "Yield strength degradation of AISI 316L stainless steel due to combined thermal expansion (α=16.0×10⁻⁶/°C) and pressure-induced hoop stress (σ_h=PD/2t) exceeding 205 MPa material limit"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Particulate contamination exceeding 15 μm diameter in hydraulic fluid"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 10 μm absolute filtration with differential pressure monitoring at 0.3 bar threshold"
  - node_2:
      trigger: "Cyclic thermal loading from 20°C to 150°C at 2 Hz frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integral flange design with controlled expansion joints using Inconel 718 bellows (E=207 GPa)"
bom_nodes:
  valve-seat:
    type: "component"
    urn: "URN:CNFX:ME:VALVE_SEAT"
    interface_type: "physical-logic-coupled"
  stem-guidebushing:
    type: "component"
    urn: "URN:CNFX:ME:STEM_GUIDEBUSHING"
    interface_type: "physical-logic-coupled"
  port-threads:
    type: "component"
    urn: "URN:CNFX:ME:PORT_THREADS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/main-valve-body.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "b330b2708376f64cf8d18c1254afd4636310226a03476df7fed7541545d37d1a"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Main Valve Body

## 1. Technical Definition
The primary structural housing that contains and supports the internal valve mechanisms within a precision filling head.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-25.0 bar**. Failure boundary: **28.5 bar internal pressure at 150°C operating temperature**, Mechanism: **Yield strength degradation of AISI 316L stainless steel due to combined thermal expansion (α=16.0×10⁻⁶/°C) and pressure-induced hoop stress (σ_h=PD/2t) exceeding 205 MPa material limit**.

### 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 |
| :--- | :--- | :--- | :--- |
| Particulate contamination exceeding 15 μm diameter in hydraulic fluid | 8 | Spool valve seizure causing complete flow blockage | Install 10 μm absolute filtration with differential pressure monitoring at 0.3 bar threshold |
| Cyclic thermal loading from 20°C to 150°C at 2 Hz frequency | 8 | Thermal fatigue cracking initiating at threaded port connections | Integral flange design with controlled expansion joints using Inconel 718 bellows (E=207 GPa) |

## 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**: **Precision CNC Machining Center**, **Coordinate Measuring Machine (CMM)**, **Industrial Ultrasonic Cleaning System**  
**Downstream Applications**: Pharmaceutical Filling Machines, Cosmetic Packaging Lines, Food &amp; Beverage Bottling Systems  

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

### Q: What is the primary function of the main valve body in precision filling equipment?
**A**: The main valve body serves as the structural housing that contains and supports internal valve mechanisms like the valve seat and stem guide, ensuring precise fluid control in filling operations.

### Q: Why is Stainless Steel 316L used for this valve body?
**A**: Stainless Steel 316L offers superior corrosion resistance, durability, and hygiene, making it ideal for machinery in industries requiring clean, reliable operation and resistance to harsh chemicals.

### Q: What components are typically integrated into this main valve body?
**A**: Key components include the valve seat for sealing, stem guide or bushing for smooth stem movement, and port threads for secure connections in fluid handling systems.

## 6. Manufacturing Compliance

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

### 🌐 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**: MAIN_VALVE_BODY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 6aa789b8
