DIDW Centrifugal Fans
(Double Inlet Double Width Fans)

Double Inlet Double Width Fans give the same pressure rise but double the flow of a single inlet single width fan.

DIDW Centrifugal Fans are fans that are double the width of a conventional fan, they are essentially 2 fan sets back to back with the adjoining case wall removed. This has the advantage of a smaller overall footprint and only one motor is required.

The performance is quite simple: a DIDW Fan gives the same pressure rise but double the flow of a single inlet single width (SISW) fan.

DIDW fans are conventionally used in heating and ventilation however Halifax Fan uses the DIDW’s generic design; couple it with our build quality and offer heavy duty industrial versions. These can be used in many applications where a large volume of air is required against a low to medium pressure.

DIDW Centrifugal Fan Variants available:

(This is fairly open ended as Halifax Fan design and build to order with customer consultation)

  • Carbon/Stainless steels construction
  • Clean air or moderate dust/ash allowable where design allows
  • Backward curved or straight impeller blades
  • Temperatures in excess of 100°C where design allows
  • Direct drive or belt drive.
  • Various handings/orientations
  • Open inlets or inlet boxes
  • ATEX
  • Damper or VSD controlable

DIDW Centrifugal Fan Key Product Benefits:

  • High efficiency
  • Lower noise
  • Smaller foot-print than 2 stand-alone fans
  • Only one motor required
Double Inlet Double Width Fans Double Inlet Double Width Fans

In submitting this form you provide us with personal information so we may reply to your query. In doing so you consent to our use of the information as set out in our privacy policy.

Latest News

  • Halifax Fan Trebles USA Factory Turnover in Year Two

    The heavy engineering capacity of the new plant in Akron, Ohio, has enabled Halifax to produce custom designed fans from 9ins to 140ins diameter and subsequently, turnover in the USA has nearly trebled over the last 12 months. Manufacturing in North America has also won them a number of new customers in Canada, a market previously difficult to service.

    Read more ...  
  • Out with the old and in with the new for Outokumpu Stainless Ltd

    Outokumpu were keen to develop current technologies that would improve value in service and were not just looking a like-for-like replacement for an excessively worn impeller. They wanted to have a fan with the improved ability to resist the dust, giving the benefit of improved reliability, performance and reduced costs. Read more ...  

  • Halifax Fan are recruiting in the UK, USA and Asia (China)

    In the UK, we are looking for temporary and permanent Fitters, Fabricators, Laser Operators ideally with rotating assembly experience. We are also looking for Engineers/Draughtspeople and a Parts Nesting Programmer (for laser).

    In China, we are looking to grow our Sales and Engineering Teams with experienced staff.

    Read more ...