0161 799 2200

BI-Series Plastic Fan

Backward Inclined Fans

The APMG Plastics BI-Series Backward Inclined Centrifugal Fan is recommended for light or medium-duty applications.

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Our friendly, professional team is waiting to help you with all your plastic fan enquiries.

Backwards Inclined Plastic Fan

High-efficiency plastic fans for demanding ventilation systems

The APMG Plastics BI-Series is a range of Backward Inclined Centrifugal Fans designed for reliable performance in light to medium-duty applications where chemical resistance is critical.

Backwards Inclined Centrigufal Fan

Manufactured from high-grade polypropylene, these fans are ideal for corrosive environments such as laboratories, process extraction systems, and fume control installations. Unlike forward-curved designs, backward inclined impellers provide higher efficiency, lower noise, and a broader, more stable operating range, making them well-suited to systems requiring consistent airflow under higher pressures.

Typical Applications

  • Laboratory ventilation
  • Fume extraction
  • Dust collection systems
  • Chemical processing
  • HVAC systems requiring chemical resistance

Why Choose the BI-Series?

Depending on the extract system configuration and ductwork, here are just some of the benefits of a BI-Series fan:

  • Higher efficiency and energy savings
  • Quieter operation with reduced turbulence
  • Improved pressure handling for ducted systems
  • Corrosion-resistant construction
  • Custom-built to your duty requirements

Each BI-Series fan is made to order in our Manchester-based facility, where our skilled plastic fabricators ensure consistent quality, precision, and value.

Our team of specialists is on hand to assist with selection and specification. We can supply full technical documentation including:

  • Noise data
  • Motor specifications
  • Operating and maintenance manuals
  • Material data sheets
  • AutoCAD drawings
  • Revit families

Made in Manchester | Built to Perform
Talk to our team today to find the right fan for your corrosive air movement needs.

Backwards Inclined Plastic Fan
Backwards Inclined Centrigufal Fan

Features

We offer a range of 11 standard sizes of high-efficiency backward-inclined centrifugal extract fans.

  • Fan Casing – Fan casing manufactured from polypropylene or PVC and glass fibre reinforcement for higher pressure applications.
  • Impeller – Backward inclined centrifugal fabricated from polypropylene.
  • Pedestal – Standard rolled steel sections with hot dipped galvanised finish
  • Motors – IEC standard motors to IP55 which can be upgraded to suit the specification.
  • Bearings – SKF or equal, double row self aligning ball
  • Drives – Fenner or equal
  • Fixings – Stainless steel throughout.
  • Anti-vibration Mountings – AVA or equal, rubber in aluminium with option of spring mounts.
  • Drive Arrangement – Standard V belt or direct driven.

Our BI-Series backward inclined centrifugal fan range has proved to be a popular international fume extraction solution. Find out more about how we can apply a GRP (glass fibre reinforced plastic) coating to our fans for even greater resilience.

The materials of construction for each fan are chosen according to the fan’s application and the requirement for resistance to chemical attack. We’ll ask you to provide full details at tender stage.

FAQs

Please see below the most common question regarding our plastic fans. Contact our friendly team if you can’t find the answer you need.

Are single phase motors suitable for plastic fan operation?

We do not offer single-phase motors for our plastic fans. This is for the following reasons:

  • Single-phase motors must operate above 75% of full load current to limit the excess power dissipating as heat. This heat causes the motor to burn out.  
  • Because the design and actual duties achieved following installation are seldom the same, we use our experience in air movement to mitigate any potential problems by sizing fan motors at the top end of their capability. We base our calculations on the fan duty specified by the client.
  • Short intermittent use of a single-phase motor may be acceptable as the heat rise within the motor would be limited, and the unit would cool down between periods of use. However, we do not recommend or supply this type of motor for any fan applications.

Should a single-phase motor still be requested, we would require this to be free-issued for us to fit. We would be unable to provide a warranty on the fan unit due to the potential issues that may be experienced.

APMG will always recommend three-phase motors controlled using a single-phase input/three-phase output inverter.

Let’s Talk

Need a little guidance? A sales engineer is always on hand to discuss your requirements and provide a full technical specification and quotation – just get in touch and tell us your application.

0161 799 2200 plastics@apmg.co.uk