Static mixer - bespoke

PRIMIX custom made static mixers are fully customized inline mixers that are totally adapted to the use and process flow. The static tubular mixers can be dimensioned for almost all volume flows, densities, viscosities and substance specific characteristics.

CheckNo moving parts (motionless mixer), gaskets and shaft seals

CheckLow energy consumption

CheckMaintenance free and no risk of leakages

CheckPredictable homogenisation

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Basic features

Static mixers – tubular mixer or motionless mixers are suitable for:

• Liquids – mixing liquids

• Mixable liquids, such as mixing water and alkali

• Non mixable liquids, such as mixing water and oil

• Liquid – gas mixing, such as water and CO2

• Gas – Gas mixing, such as Flue gas and ammonia

Mixing liquids and gases during a continuous process

With the PRIMIX static tubular mixer you can create a homogeneously distributed mixing of liquids and gases in a continuous process. This takes place entirely without moving parts which means there are no extra power or mechanical elements required. For this reason static mixers are also called motionless inline mixers. The lack of moving parts makes the PRIMIX static mixers very low maintenance, and process-technically extremely safe components.

Simple to clean - static tubular mixers

A PRIMIX static mixer is very simple to clean in a CIP cycle and depending on the process requirements the process can be done totally sanitary/sterile/aseptically. For static mixers with demountable mixer elements the cleaning can be done outside the tube. This can be very useful when processing extremely viscous media. Read more about sanitary mixers.

simple cleaning

Low energy consumption

In industrial applications liquids and gases are moved through pipelines. The energy needed for this, in the form of pressure, is generated by a pump or compressor. Static mixers are very often fitted into these pipes and the components that need to be mixed or dispensed are added to the main flow directly before the mixer. The static mixer uses energy for mixing the components. This energy emerges as a certain pressure drop across the apparatus and the pressure is maintained by the pump or compressor. Energy consumption can be a significant cost for a process. Besides the homogeneity PRIMIX also calculates the expected fall in pressure beforehand, so that an optimal design is created with a very favourable –indirect– energy consumption.

static mixer low energy consumption

Motionless mixers are maintenance free

What happens to the maintenance schedule after placing a PRIMIX static mixer or heat exchanger inside a process? To be very honest there is no schedule. Because the well thought out and maintenance free design, PRIMIX do not need one. On the other hand service at PRIMIX is at the highest level. For possible future mixer adjustments or for the calculation of processes PRIMIX is more than happy to assist you.


Static mixers have a very wide range of application within various kinds of industries and are therefore very flexible. In general applications such as technical homogeneous mixing, extraction, washing, reacting, cooling, mixing of viscous media and heating are the most common. But of course other less common applications are also possible. The various media to be mixed or treated are described under the menu item: industries, on the website.

More information about specific media can be found here: static mixers for chemical processes, static mixers for processing polymers and fibers, static mixers for food and drinks, static mixers for water treatment, static mixers for petrochemical, static mixers for pharmaceutical industry, static mixers for BIO technologies

Mixer design

At PRIMIX design is more. It includes the engineering and thinking through the process with the client. Clearly defining the relevant parameters and where necessary daring to ask critical questions. This with the aim of obtaining maximum performance in the process. The intended design is entirely calculated in our own PRIMIX Dynamics software and afterwards is designed in SolidWorks®. The design instructions and calculations are based on strict criteria formulated in the current industrial design standards for high pressure devices. Read more about the PRIMIX design perspective.

design mixer

Basic segment shapes of static mixers

Inside the PRIMIX static mixer design four basic segment shapes are used; the Spiral/helical shape, the Quatro shape, the V-shape and the X-shape. More segments form one strand of elements that are placed inside a tube. The attachment of the element strands can take place by means of high-quality welding or soldering techniques, but the elements can also be put in as demountable items. The cleaning of these static tubular mixers can take place totally externally. This can be very practical when processing extreme viscous media.


Characteristics of the mixing elements

Each element has process specific characteristics and depending on the process and the flow diameter a certain type of element will be chosen. Below you will find a short explanation of the segment shapes. You can contact PRIMIX for more information about the segment shapes that have been used in the static mixers.


Elements provide turbulent or laminar mixing

Depending on the element chosen, mixing can be divided into turbulent and laminar. In case of turbulent mixing we are talking about mixing substances where the viscosity is watery or slightly higher. The flow speeds are relatively high. Radial mixing occurs relatively often, and a technical homogeneous mixture has already been obtained in a short section. Laminar mixing occurs with substances with a high to very high viscosity. The speeds are low and the pressure drops are high. Radial mixing hardly ever occurs. The mixing effects are concentrated around the transition of the mixing elements. There the two layers are forced to mix and then forced into each other so that four layers occur, and so on. At the menu item 'operating principle' you can read more about turbulent and laminar mixing.

Technical specifications

The PRIMIX inline static mixers can, among others, be produced from the following materials:

  • (Low temperature) carbon steel and low alloyed steel, for example A106 Gr. B, A333 Gr. 6, A335 Gr. P11, etc.
  • Stainless steel, e.g. 316L(1.4404), 304L(1.4307), 321(1.4541), 316Ti (1.4571), etc.
  • PTFE or glass (glazed) covered carbon steel or stainless steel
  • Steel with fusion bond coatings or halar coating
  • Duplex & super duplex (1.4462)
  • Exotic materials such as: alloys, Hastelloy®, titanium, nickel, Incoloy®, alloys
  • Glass fibre reinforced synthetic materials (GRP) with a chemical barrier of uPVC, cPVC, PE covering
  • Synthetic materials, e.g. uPVC, cPVC, PP, HDPE, PVDF, PTFE
  • Silicate glass


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