---
title: "Backwash Pump"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BACKWASH_PUMP"
  data_integrity_hash: "68947e4ac4f05834aa88a8a1d5827973"
  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:BACKWASH_PUMP"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/backwash-pump.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/backwash-pump"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "2.5-8.0 bar (36-116 psi) at 15-60 L/min flow rate"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 3.2
    unit: "m"
    consequence: "Cavitation-induced pitting from vapor bubble collapse at pump impeller (Bernoulli principle), mechanical seal degradation from abrasive particle ingress exceeding 15 μm size, bearing lubrication breakdown at 95°C (ASTM D97 pour point exceeded)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Insufficient NPSHa (Net Positive Suction Head available) below 3.2 m H₂O"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install booster pump maintaining NPSHa &gt; 4.0 m H₂O, implement suction strainer with 100 μm mesh"
  - node_2:
      trigger: "Abrasive silica particles &gt; 15 μm concentration exceeding 50 mg/L in feed water"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install multi-cyclone pre-filter removing 98% of particles &gt; 20 μm, specify silicon carbide seal faces with 9.5 Mohs hardness"
bom_nodes:
  impeller:
    type: "part"
    urn: "URN:CNFX:ME:IMPELLER"
    interface_type: "physical-logic-coupled"
  casingvolute:
    type: "component"
    urn: "URN:CNFX:ME:CASINGVOLUTE"
    interface_type: "physical-logic-coupled"
  shaft:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT"
    interface_type: "physical-logic-coupled"
  mechanical-seal:
    type: "part"
    urn: "URN:CNFX:ME:MECHANICAL_SEAL"
    interface_type: "physical-logic-coupled"
  motor:
    type: "part"
    urn: "URN:CNFX:ME:MOTOR"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 5199:2016 - TECHNICAL SPECIFICATIONS FOR CENTRIFUGAL PUMPS"
    scope: "Verified Engineering Specification"
  - standard: "EN 809:1998+A1:2009 - PUMPS AND PUMP UNITS FOR LIQUIDS - COMMON SAFETY REQUIREMENTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/backwash-pump.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a2ca1104b6e9a98be1998bd74437e9a8cd998c6eda7f9dc3bf7a1c3039a0b42b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Backwash Pump

## 1. Technical Definition
A pump specifically designed to provide high-pressure water flow for cleaning and regenerating filtration media in backwash systems.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **2.5-8.0 bar (36-116 psi) at 15-60 L/min flow rate**. Failure boundary: **Cavitation occurs at NPSHa &lt; 3.2 m H₂O (NPSHr + 0.5 m safety margin), mechanical seal fails at shaft deflection &gt; 0.05 mm, bearing temperature exceeds 95°C**, Mechanism: **Cavitation-induced pitting from vapor bubble collapse at pump impeller (Bernoulli principle), mechanical seal degradation from abrasive particle ingress exceeding 15 μm size, bearing lubrication breakdown at 95°C (ASTM D97 pour point exceeded)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Insufficient NPSHa (Net Positive Suction Head available) below 3.2 m H₂O | 8 | Cavitation damage to impeller and volute, reducing efficiency by 40% within 200 operating hours | Install booster pump maintaining NPSHa &gt; 4.0 m H₂O, implement suction strainer with 100 μm mesh |
| Abrasive silica particles &gt; 15 μm concentration exceeding 50 mg/L in feed water | 8 | Mechanical seal wear rate of 0.1 mm/1000 hours, leading to seal failure and 5 L/min leakage | Install multi-cyclone pre-filter removing 98% of particles &gt; 20 μm, specify silicon carbide seal faces with 9.5 Mohs hardness |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Impeller](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/impeller.md) `(Standalone System)`
- [Mechanical Seal](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/mechanical-seal.md) `(Standalone System)`
- [Motor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/motor.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Filtration Media Tank**, **High-Pressure Water Supply System**, **Backwash Control Panel**  
**Downstream Applications**: Clean Water Filtration Systems, Industrial Process Water Systems, Municipal Water Treatment Plants  

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

### Q: What materials are used in this backwash pump for corrosion resistance?
**A**: This backwash pump is constructed with corrosion-resistant materials including cast iron casing, stainless steel (304/316) components, bronze fittings, and EPDM or Viton seals for maximum durability in industrial environments.

### Q: What are the main components in the backwash pump BOM?
**A**: The bill of materials includes: casing/volute, impeller, mechanical seal, motor, and shaft. These components work together to provide high-pressure water flow for effective filtration media cleaning.

### Q: How does this pump improve filtration system maintenance?
**A**: This backwash pump delivers high-pressure water flow specifically designed to clean and regenerate filtration media efficiently, reducing downtime and extending the life of filtration systems in industrial applications.

## 6. Manufacturing Compliance
- ISO 5199:2016 - TECHNICAL SPECIFICATIONS FOR CENTRIFUGAL PUMPS
- EN 809:1998+A1:2009 - PUMPS AND PUMP UNITS FOR LIQUIDS - COMMON SAFETY REQUIREMENTS

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

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

> **Reference ID**: BACKWASH_PUMP | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 75de4211
