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Hison Bifurcated Fans

  • Axial Flow Fans

    • Commercial Buildings
    • Industrial

Hison Bifurcated Fans, splitway with motor out of air stream are designed to meet difficult operating conditions, like movement of

  • heated and hot air/gas
  • hazardous air
  • kitchen exhaust system
  • corrosive or contaminated properties
  • alternate to flame proof motors

Fans can be of Spark Resistant Constructions built and certify by ABS


Ranges from 100m3/hr to 250000m3/hr and static pressure up to 125mmW.g.

Performance of Hison Fans are tested in accordance to BS 848 Part 1 1980, the latest ISO 5801 First Edition 1997-06-1 and many of Hison Axial Fan models are also tested in accordance to AMCA 210-99 Standard for air performance and licensed to bear the AMCA seal.

Sound level data is in accordance with BS 848 – 1985: part 2. and ISO 5136 First Edition 1990-12-15.

Direction of Air Flow

Versatility of air flow direction of Form ‘B’ or Form ‘A’


Fan housings are constructed of rolled steel. Fan housing of 500mm diameter and above of up to 10mm thick shall have rolled integral flanges ensuring complete roundness of the casing and accuracy of bolting holes. 450mm diameter and below shall be welded with rolled flat bar flanges continuous welded on both side.

Blades tip clearance is consistently maintained.

Balancing Standards

All fan impellers are statically and dynamically balance to ISO 1940-1973 (E) G:6.3 standard.

Standard Surface Coating

Hot Dipped Galvanised to EN ISO 461:1999 which also comply to ASTM A123, A153 and BS 729.

Special painting to user specification is available upon request.


All fans shall be supplied with totally enclosed, high efficiency motors of IP 55 degree of protection, foot-mounted Class F insulation, built to International Standards (IEC).
Special request for NEMA standard motors are also available.

Special motors such as Explosion proof, 2-speed, Class H or D.C. motors are available to suits each specific application.

Factory Acceptance Tests

All HISON Fans are checked and tested under the strict ISO procedures undertaken for a Standard Factory Acceptance Test (FAT) before delivery.


Separate upstream and downstream guides vanes

Mounting Feet

Inlet Cone

Matching Flanges

Wire Guards

Anti-Vibration Mountings


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