---
title: "Metering Pump"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:METERING_PUMP"
  data_integrity_hash: "8960afd84117ab38386819b8afc1ed0e"
  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:METERING_PUMP"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/metering-pump.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/metering-pump"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-15.0 bar at 0.1-100.0 mL/min flow rate"
    unit: "ml/min or L/hr"
engineering_limits:
  max_safe_operating_point:
    value: 18.0
    unit: "bar"
    consequence: "Diaphragm fatigue failure due to cyclic stress exceeding 35 MPa yield strength; thermal expansion mismatch between PTFE diaphragm (110×10⁻⁶/°C) and 316L stainless steel housing (16×10⁻⁶/°C) causes seal leakage"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Cavitation at NPSH below 0.8 m due to vapor pressure of binder (e.g., 0.023 bar for water at 20°C)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Positive displacement design with 1.5 m NPSH margin and pressure relief valve set at 16.0 bar"
  - node_2:
      trigger: "Crystallization of sodium silicate binder at 25°C saturation concentration"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Heated fluid path maintaining 40±2°C and 0.2 μm filtration"
bom_nodes:
  pump-head-fluid-chamber:
    type: "part"
    urn: "URN:CNFX:ME:PUMP_HEAD_FLUID_CHAMBER"
    interface_type: "physical-logic-coupled"
  diaphragm-piston:
    type: "component"
    urn: "URN:CNFX:ME:DIAPHRAGM_PISTON"
    interface_type: "physical-logic-coupled"
  check-valves-inlet-outlet:
    type: "part"
    urn: "URN:CNFX:ME:CHECK_VALVES_INLET_OUTLET"
    interface_type: "physical-logic-coupled"
  drive-mechanism-motor-gearbox:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_MECHANISM_MOTOR_GEARBOX"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 28580:2009 (DIAPHRAGM METERING PUMPS - GENERAL REQUIREMENTS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/metering-pump.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a617df17b2fddd4e94fc923ff8cf6ba2918b1f14dd62735269a7892ccf6425be"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Metering Pump

## 1. Technical Definition
A precision pump designed to deliver precise, controlled volumes of liquid binder in spray systems.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-15.0 bar at 0.1-100.0 mL/min flow rate**. Failure boundary: **Pressure exceeding 18.0 bar causes diaphragm rupture; flow accuracy degrades beyond ±0.5% at 25°C**, Mechanism: **Diaphragm fatigue failure due to cyclic stress exceeding 35 MPa yield strength; thermal expansion mismatch between PTFE diaphragm (110×10⁻⁶/°C) and 316L stainless steel housing (16×10⁻⁶/°C) causes seal leakage**.

### 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 |
| :--- | :--- | :--- | :--- |
| Cavitation at NPSH below 0.8 m due to vapor pressure of binder (e.g., 0.023 bar for water at 20°C) | 8 | Hydraulic hammer causing diaphragm pitting and 15% flow accuracy loss | Positive displacement design with 1.5 m NPSH margin and pressure relief valve set at 16.0 bar |
| Crystallization of sodium silicate binder at 25°C saturation concentration | 8 | Check valve blockage requiring 50 N·m torque to overcome | Heated fluid path maintaining 40±2°C and 0.2 μm filtration |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | ml/min or L/hr | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Pump Head / Fluid Chamber](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pump-head-fluid-chamber.md) `(Standalone System)`
- [Check Valves (Inlet &amp; Outlet)](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/check-valves-inlet-outlet.md) `(Standalone System)`
- [Drive Mechanism (Motor &amp; Gearbox)](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drive-mechanism-motor-gearbox.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Liquid Binder Storage Tank**, **Spray Nozzle System**, **Programmable Logic Controller (PLC)**  
**Downstream Applications**: Insulation Panels, Composite Materials, Adhesive-Coated Products  

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

### Q: What materials are used in this metering pump and why?
**A**: This metering pump uses stainless steel for structural durability, PTFE (Polytetrafluoroethylene) for chemical resistance in fluid paths, and ceramic components for wear resistance in high-precision areas. This combination ensures longevity and consistent performance with various liquid binders.

### Q: How does this pump maintain precise volume control?
**A**: Precision is achieved through a calibrated drive mechanism (motor and gearbox) that controls the diaphragm/piston movement, combined with check valves at inlet and outlet to prevent backflow. The pump head/fluid chamber is engineered for minimal dead volume, ensuring accurate delivery in spray system applications.

### Q: What industries or applications is this metering pump suitable for?
**A**: This pump is designed for machinery and equipment manufacturing, specifically for applications requiring precise liquid binder dispensing in spray systems. Common uses include adhesive application, coating processes, and chemical additive injection in industrial production lines.

## 6. Manufacturing Compliance
- ISO 28580:2009 (DIAPHRAGM METERING PUMPS - GENERAL REQUIREMENTS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Metering Pump](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/metering-pump)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: METERING_PUMP | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 1883fac4
