All Products

Hison Axial Flow Fans for Offshore Applications

  • Axial Flow Fans

    • Offshore Industries
  • Hison Axial Flow Fans, formerly know as Howden Fans are manufactured to International Quality Standard.
  • Available from sizes 150mm to 2000mm diameter.
  • Incorporate heavy duty marine grade LM-6 or equal cast aluminium impellers with aerofoil blades for better efficiencies and lower sound level.
  • Adjustable blades angles designs to meet varied volume and pressure system requirements featuring the blade shank with tapered conical section. The tapered section fits into a conical slot in the hub, providing a taper lock fit. A bolt is cast into the blade, projecting into the hub and is secured on the inside by lock-washer and nut.
  • Hison Impellers comes in polypropylene and aluminum.


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 heavy gauge rolled steel (minimum 6mm thickness). 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.

Heavy duty motor mounting plate providing rigid support for standard foot mounting motor to provides easy replacement.

Blades tip clearance is consistently maintained.

Standard fans are with extended motor leads to fan housing exterior junction box with IP 56 degree of protection.

Extended lubrication tubes from motor to exterior of fan housing are standard for motors with lubrication nipple.

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.

Blasted to SA 2-1/2 and coated with Hi-built epoxy paints for marine environment and most industrial applications.

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


Fans Enquiry Form