BAS/BNS Series Single Inlet Centrifugal Housing Fans

BAS/BNS Series

Single Inlet Centrifugal Housing Fans

BAS/BNS series are single inlet centrifugal fans. The core technologies—backward curved impeller with variable width—enable the fan operating in high-efficiency zone at 50/60Hz without VFD, delivering efficient, reliable airflow for equipment cooling, MAU (Make-up Air Units), exhaust systems, general ventilation applications with installation constraints.

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Technical Parameters

Specification BAS (Airfoil Blade) BNS (Plate Blade)
Type High Efficiency Single Inlet Fan Standard Single Inlet Fan
Max Air Volume (CMH) 90,000 60,000
Max Pressure (Pa) 2,700 2,700
Size Range (mm) 250–1,200 250–1,000
Impeller Blades 11 blades 10 blades

BAS Advantages

  • Higher efficiency for energy saving
  • Ideal for continuous duty
  • Suitable for MAU & exhaust systems

BNS Advantages

  • Cost-effective solution
  • Reliable plate blade design
  • Easy system integration

Key Features

Variable Width Design

Constant impeller diameter with variable width, enabling the fan operation in high-efficiency zone at 50/60Hz without VFD.

Multiple Configurations

Six structural options available for various installation requirements

Backward Curved Blades

High efficiency, stable pressure curve, suitable for variable air volume systems

Direct Drive or Belt Drive

Flexible drive options based on application needs

ATEX Optional

Explosion-proof versions available (BAS-Ex/BNS-Ex) for hazardous areas

AMCA & CE

International certification. AMCA Certified for air performance, CE compliant for European market standards.

Selection Guide

Energy Efficiency Priority

BAS (Airfoil blade)

Recommended for applications where energy consumption and operational efficiency are critical factors.

Budget Priority

BNS (Plate blade)

Cost-effective option providing reliable performance with lower initial investment.

ATEX Certification Required

BAS-Ex / BNS-Ex

Explosion-proof versions for hazardous locations meeting safety standards.

Specific Discharge Direction

6 Mounting Configurations

Multiple structural options available for precise installation requirements.

Typical Applications

Application
Model
Key Advantage
MAU
BAS/BNS
Variable width, compact design
Laboratory Fume Hoods
BAS/BNS, BAS-Ex
Reliable exhaust, ATEX option
Equipment Cooling
BAS
High efficiency, flexible installation
Local Exhaust Systems
BNS
Cost-effective, reliable
General Industrial Ventilation
BAS
Durable, ATEX optional
Spray Booth Exhaust
BAS-Ex
Explosion-proof, corrosion resistant

Comparison with Competitors

Width Flexibility

BAS/BNS: Variable width

Competitors: Fixed width

Perfect cabinet matching

Configurations

BAS/BNS: 6 structural options

Competitors: Limited

Installation flexibility

ATEX Option

BAS/BNS: Available

Competitors: Partial

Wider application scope

Blade Options

BAS/BNS: Airfoil/Plate

Competitors: Single type

Efficiency vs cost options

Reference Documents

Product Catalogue

Complete technical specifications, dimensional drawings, and performance curves.

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Installation Guide

Step-by-step installation and commissioning procedures for all configurations.

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Maintenance Manual

Regular maintenance schedules, troubleshooting, and spare parts information.

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Performance Curves

Detailed performance graphs and operating envelopes for all series sizes.

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Technical Specs

Comprehensive technical data, material specifications, and certification documents.

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