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QJB-W 2.5 kW Submersible Sludge Recirculation Pump with Auto-Coupling Guide Rail and Dual Mechanical Seals
QJB-W 2.5 kW Submersible Sludge Recirculation Pump with Auto-Coupling Guide Rail and Dual Mechanical Seals
Specifications
Model Number :
QJB-W 2.5
Current :
6.8 A
Payment Terms :
T/T
Discharge Flange :
DN 400 mm
Delivery Time :
15
Place of Origin :
China
Frequency :
50 Hz
Brand Name :
Lanjiang
Power :
2.5 kW
Supply Ability :
500
Max Depth :
10 m
MOQ :
1
Impeller Diameter :
400 mm
Description
QJB-W 2.5 Submersible Sludge Recirculation Pump
Key Specifications
  • Model: QJB-W 2.5 Submersible Sludge Return Pump
  • Power: 2.5 kW | Current: 6.8 A | 50 Hz, 3-Phase
  • Impeller Diameter: 400 mm | DN: 400 mm
  • Auto-Coupling Guide Rail Installation for Tool-Free Maintenance
  • Premium SKF/NSK Bearings (≥100,000 h lifespan)
  • Dual Mechanical Seals: Tungsten Carbide / Viton + O-Rings
  • IP68 Protection | Class F Insulation | Max Depth 10 m
  • Anti-Tangle 3-Blade Swept-Back Impeller Design
  • Suitable for Sludge Return, Recirculation & Denitrification in Small-Medium WWTPs
  • ISO9001 & CE Certified | Made in Nanjing, China
Product Overview

The Lanjiang QJB-W 2.5 is a versatile submersible sludge return pump designed for small-to-medium wastewater treatment plants that require a dependable balance of hydraulic performance and energy efficiency. Rated at 2.5 kW (6.8 A), this model provides approximately 67% more power than the 1.5 kW variant, giving operators extra headroom for slightly deeper basins, longer return lines, or higher mixed liquor suspended solids (MLSS) concentrations.

Design Features
Impeller System
400 mm diameter 3-blade swept-back impeller with excellent anti-tangling and self-cleaning characteristics
Installation
Compatible footprint with QJB-W 1.5 for direct drop-in upgrades without modifying existing guide rail systems
Sealing & Bearings
Industrial-grade dual mechanical seals (tungsten carbide/Viton) and premium imported SKF/NSK bearings
Protection
IP68 enclosure and Class F insulation provide full protection against continuous submersion
Maintenance Advantages

The auto-coupling guide rail system allows the pump to be raised and lowered without tank entry, vastly simplifying routine inspection and maintenance while ensuring reliable 24/7 operation.

Quality Assurance: ISO9001 & CE Certified | Manufactured in Nanjing, China
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QJB-W 2.5 kW Submersible Sludge Recirculation Pump with Auto-Coupling Guide Rail and Dual Mechanical Seals

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Product Detail
Model Number :
QJB-W 2.5
Current :
6.8 A
Payment Terms :
T/T
Discharge Flange :
DN 400 mm
Delivery Time :
15
Place of Origin :
China
Contact Supplier
QJB-W 2.5 kW Submersible Sludge Recirculation Pump with Auto-Coupling Guide Rail and Dual Mechanical Seals

Nanjing Lanjiang Water Treatment Equipment Co., Ltd

Verified Supplier
1 Years
jiangsu, nanjing
Since 2001
Business Type :
Manufacturer
Main Products :
Industrial Tank Mixer, Sewage Aerator, Water Aeration Equipment
Total Annual :
40000000-70000000
Employee Number :
80~100
Certification Level :
Verified Supplier
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