---
title: "Diaphragm Pump"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:DIAPHRAGM_PUMP"
  data_integrity_hash: "4ae15c6a93453667973a2f28093d7723"
  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:DIAPHRAGM_PUMP"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/diaphragm-pump.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/diaphragm-pump"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-15 bar"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 18
    unit: "bar"
    consequence: "Diaphragm material yield strength (EPDM: 15 MPa, PTFE: 25 MPa) exceeded by hydraulic pressure, causing permanent deformation or rupture"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Abrasive particle concentration exceeding 1000 ppm in fluid"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 10-micron absolute filtration upstream with differential pressure monitoring"
  - node_2:
      trigger: "Ambient temperature sustained above 80°C for 1000+ hours"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate Peltier cooling jacket maintaining 40°C maximum diaphragm temperature"
bom_nodes:
  diaphragm:
    type: "component"
    urn: "URN:CNFX:ME:DIAPHRAGM"
    interface_type: "physical-logic-coupled"
  pump-head:
    type: "part"
    urn: "URN:CNFX:ME:PUMP_HEAD"
    interface_type: "physical-logic-coupled"
  check-valves:
    type: "part"
    urn: "URN:CNFX:ME:CHECK_VALVES"
    interface_type: "physical-logic-coupled"
  air-distribution-system:
    type: "part"
    urn: "URN:CNFX:ME:AIR_DISTRIBUTION_SYSTEM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 2858:2012 - END-SUCTION CENTRIFUGAL PUMPS (DESIGNATION, NOMINAL DUTY POINT AND DIMENSIONS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B73.3-2015 - SPECIFICATION FOR SEALLESS HORIZONTAL END SUCTION METALLIC CENTRIFUGAL PUMPS FOR CHEMICAL PROCESS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 809:1998 - PUMPS AND PUMP UNITS FOR LIQUIDS - COMMON SAFETY REQUIREMENTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/diaphragm-pump.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "b4b783db8307ee8529e841413b1c2da30d3b126a8dbcbf4b06b25fc88300b5d6"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Diaphragm Pump

## 1. Technical Definition
A positive displacement pump that uses a flexible diaphragm to move fluid through reciprocating action

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-15 bar**. Failure boundary: **18 bar differential pressure**, Mechanism: **Diaphragm material yield strength (EPDM: 15 MPa, PTFE: 25 MPa) exceeded by hydraulic pressure, causing permanent deformation or rupture**.

### 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 |
| :--- | :--- | :--- | :--- |
| Abrasive particle concentration exceeding 1000 ppm in fluid | 8 | Diaphragm surface erosion reducing thickness below 0.5 mm | Install 10-micron absolute filtration upstream with differential pressure monitoring |
| Ambient temperature sustained above 80°C for 1000+ hours | 8 | Elastomer diaphragm hardening (Shore A hardness increase &gt;15 points) | Integrate Peltier cooling jacket maintaining 40°C maximum diaphragm temperature |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Pump Head](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pump-head.md) `(Standalone System)`
- [Check Valves](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/check-valves.md) `(Standalone System)`
- [Air Distribution System](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/air-distribution-system.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Motor Drive System**, **Fluid Filtration System**, **Pressure Relief Valve**  
**Downstream Applications**: Chemical Transfer Systems, Paint Spraying Equipment, Water Treatment Systems  

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

### Q: What materials are used in the diaphragm pump construction?
**A**: Our diaphragm pumps are constructed with high-quality materials including Stainless Steel for corrosion resistance, PTFE (Polytetrafluoroethylene) for chemical compatibility, EPDM (Ethylene Propylene Diene Monomer) for durability, and Aluminum for lightweight strength.

### Q: What are the main components of the diaphragm pump?
**A**: The key components include an Air Distribution System for operation, Check Valves for directional flow control, the Diaphragm for fluid displacement, and the Pump Head that houses the working mechanism.

### Q: What industries are these diaphragm pumps suitable for?
**A**: These positive displacement pumps are ideal for Machinery and Equipment Manufacturing applications, particularly for handling various fluids in industrial processes where reliable, leak-free pumping is required.

## 6. Manufacturing Compliance
- ISO 2858:2012 - END-SUCTION CENTRIFUGAL PUMPS (DESIGNATION, NOMINAL DUTY POINT AND DIMENSIONS)
- ANSI/ASME B73.3-2015 - SPECIFICATION FOR SEALLESS HORIZONTAL END SUCTION METALLIC CENTRIFUGAL PUMPS FOR CHEMICAL PROCESS
- DIN EN 809:1998 - PUMPS AND PUMP UNITS FOR LIQUIDS - COMMON SAFETY REQUIREMENTS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Diaphragm Pump](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/diaphragm-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**: DIAPHRAGM_PUMP | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 0669f693
