COLASIT is the world’s premier manufacturer of Plastic centrifugal fans for corrosive applications. COLASIT was established in 1944 and was one of the first companies in the world to recognize the potential for fabricating equipment in plastic.


These pioneering efforts led to the development of the first COLASIT plastic centrifugal fan – the CMV (COLASIT Medium Ventilator) more than 50 years ago and COLASIT has been setting the world benchmark ever since.


COLASIT is constantly striving to improve the design and performance characteristics of their fans taking into account various factors such as energy efficiency, noise levels, longevity and industry needs. This has led to a comprehensive range of proven designs able to cater for air flow volumes from 40m3/h up to 130’000m3/h and static pressures right up to an impressive 7’000Pascal.

Polimatrix keeps stock of the most common fan sizes from inlet diameter 125 to inlet diameter 400. For accurate & quick fan selection Colasit provides the ColaVent fan selection utility. This is accessible via the link or contact Polimatrix for assistance to register for the Expert version, which also allows access to the full Colasit catalogue, motor & v-belt selection.

COLASIT fans are available in a range of plastic materials to suit even the most demanding applications.

The new CMVpro range is the best fan in its class in terms of efficiency and its broad characteristic curve field. It complies with the latest ErP requirements for fans and is ideal for energy sensitive multi-fan applications.

Accessories such as flexible duct connections, flanges, drain valves, shaft seals, vibration absorbers and splinter protection are available.

Fans are either Direct Drive, V-Belt Drive or Direct Drive with Frequency Inverter (VSD).

Casing material options:

  • Polypropylene
  • Polypropylene flame retardant
  • PVC
  • Polyethylene
  • PPs-el (Polypropylene electrically conductive) for ATEX
  • PVDF

Impeller material options:

  • Polypropylene
  • Polypropylene flame retardant
  • PPs-el (Polypropylene electrically conductive) for ATEX
  • PVDF

COLASIT fans are available in a range of plastic materials to suit even the most demanding applications.

The most common COLASIT fan ranges are as follows:


Medium pressure fans from size 125 up to 400


High pressure fans from size 315 up to 1250


Medium-high pressure fans from size 450 up to 1250


Medium-high pressure fans from size 450 up to 1250


 Low volume high pressure fans size 63 up to 250


In-line bifurcated fans from size 200 up to 315

Other fan types available: CMHV, CDVA, CHVS-D, CHVN-D

COLASIT fans in most types and sizes are available in ATEX configuration for Zone 2 and Zone 1 applications.

Polimatrix is also able to design, manufacture and install plastic duct systems and fume scrubbers and laboratory fume cabinets to provide clients with a total package or individual components as required.

Please contact Polimatrix with your fan requirements and we will find the right solution for you.

NOTE 1: There are no metal parts, bolts or screws in contact with the airstream thus ensuring the fan integrity is not compromised by corrosion

NOTE 2: All impellers are Factory balanced to ensure optimum vibration free operation even as a replacement part.


COLASIT has introduced the new and updated online Colavent Design program for fans.

Colavent allows you to accurately select and configure the correct fan for your application across the entire COLASIT range.

There are two options:

  1. Fastline – This a basic quick selection tool. No registration required. Sen your quotation request in just a few basic steps
  2. Expert – This is a detailed selection tool for those with some technical knowledge of fans and ventilation systems. It allows selection of materials, explosive protection (Atex), various drive options and specification of belt drives. The detailed fan configuration (curves and data sheet) can be printed and saved. You can send a quote request with your fan configuration with a single click.


Simply click on the Colavent logo to be taken directly to the application.



1047 Katrol Ave, Robertville,

Roodepoort, Gauteng


Phone: (+27) 11 672 2101

Fax: (+27) 11 672 8628