---
title: "Pilot Valve"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PILOT_VALVE"
  data_integrity_hash: "e37fb3c5f546c97e99bca722d0c2bf31"
  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:PILOT_VALVE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pilot-valve.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pilot-valve"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-15 bar"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 18
    unit: "bar"
    consequence: "Diaphragm rupture due to yield strength exceedance at 18 MPa stress"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Particulate contamination &gt; 25 μm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 10 μm absolute filtration with differential pressure monitoring"
  - node_2:
      trigger: "Water content &gt; 100 ppm in hydraulic fluid"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate moisture sensors with automatic desiccant regeneration"
bom_nodes:
  solenoid-coil:
    type: "part"
    urn: "URN:CNFX:ME:SOLENOID_COIL"
    interface_type: "physical-logic-coupled"
  valve-spool:
    type: "component"
    urn: "URN:CNFX:ME:VALVE_SPOOL"
    interface_type: "physical-logic-coupled"
  spring:
    type: "component"
    urn: "URN:CNFX:ME:SPRING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pilot-valve.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "ed85e698a194acf056265d55dda57353c6f925350e2e356ef1411140b231969b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Pilot Valve

## 1. Technical Definition
A small valve that controls the operation of a larger main valve by regulating pilot pressure.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-15 bar**. Failure boundary: **18 bar differential pressure**, Mechanism: **Diaphragm rupture due to yield strength exceedance at 18 MPa stress**.

### 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 &gt; 25 μm | 8 | Spool valve seizure | Install 10 μm absolute filtration with differential pressure monitoring |
| Water content &gt; 100 ppm in hydraulic fluid | 8 | Corrosion-induced leakage at 0.1 mm/year | Integrate moisture sensors with automatic desiccant regeneration |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Solenoid Coil](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/solenoid-coil.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pressure Regulator**, **Air Preparation Unit**, **Control Panel**  
**Downstream Applications**: Hydraulic Press, Pneumatic Cylinder System, Industrial Valve Assembly  

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

### Q: What is the primary function of a pilot valve in machinery?
**A**: A pilot valve controls the operation of a larger main valve by regulating pilot pressure, enabling precise flow control in hydraulic or pneumatic systems with minimal force.

### Q: Which materials are best for pilot valves in corrosive environments?
**A**: Stainless steel offers excellent corrosion resistance, while PTFE seals provide chemical inertness. Brass is suitable for less aggressive environments due to its durability and machinability.

### Q: How do I maintain a pilot valve's solenoid coil and spring?
**A**: Regularly inspect the solenoid coil for electrical integrity and the spring for wear or deformation. Clean components to prevent debris buildup, and replace parts per the manufacturer's maintenance schedule.

## 6. Manufacturing Compliance

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

### 🌐 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**: PILOT_VALVE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: e92599c8
