Comprehensive ranges

Fan range overview

We offer one of the most comprehensive industrial fan ranges of any manufacturer in the world. The selection charts overleaf, for both 50 and 60 cycles, show some of the range of axial and centrifugal fans available with direct drive.

 

The Witt & Sohn fan design approach offers multiple impellers for each fan type allowing the most economical arrangement to be confidently selected. Even if applications necessitate change, a different impeller can in most cases be used without having to change the whole fan.

Drive options

Direct Drive: Virtually all possible working points with a volume flow rate from 100 m3/h up to 1,000,000 m3/h and pressure increases from 100 Pa up to 50,000 Pa can be offered with direct drive and the highest efficiency. The use of frequency converters allows an almost infinitely variable control. The limits of the controllability are then determined by max./min. permissible speeds or resonance speeds to be locked.

 

V-belt drives: For V-belt drive applications we offer many alternatives as standard.

 

Other drives: Witt fans are also manufactured with drives via a coupling; or with pneumatic, hydraulic or water motors.

Materials

Our continued exposure to applications with the highest performance requirements, such as nuclear power plants, naval ships and chemical installations, has enabled us to gain extensive experience with all kinds of materials. Mild steel, aluminium and various speciality steels are used as standard, although more unusual materials such as titanium are increasingly being specified.

Standard specifications

Offered as standard are a wide selection of outlet positions, casing geometries, casing thicknesses, materials and impellers for the various fan types.

Frequently Asked Questions

What are industrial fans?

Industrial fans move, distribute, or extract air and process gases, supporting safe and efficient operations.

 

What tasks do industrial fans perform in technical systems?

Witt & Sohn supplies solutions for tunnels, shipbuilding, offshore applications, power plants, industrial facilities, and environmental technology.

 

For which industries does Witt & Sohn supply fan solutions?

Witt & Sohn develops fan solutions for tunnel and metro systems, shipbuilding, offshore applications, power plants, industrial and infrastructure projects, as well as the defense industry worldwide.

 

How is the right fan selected for an application?

Based on the specified volume flow, pressure increase, density, temperature, and installation space, suitable fans can be selected.

 

What factors influence the performance of a fan?

A fan's performance is influenced, among other things, by air volume, pressure, speed, efficiency, temperature, and the properties of the medium being moved. The design of the overall system and possible flow losses also play an important role.

 

How can the energy efficiency of fan systems be improved?

If the required operating point is known, a fan optimized specifically for that operating point can be manufactured. Regular maintenance helps keep energy consumption and operating costs low.