Tank agitators

PREMA-SERVICE tank agitators are efficient, economical, and are made to last!

The compact and robust design has the following benefits:

  • No need for additional supporting
  • Easy access to the mechanical seal
  • Seal can be interchanged while the tank is full
  • Reduction of noise and vibrations


Tank agitator portfolio:


  • Fixed type for homogenizing/blending refinery products and chemical products.
  • Swivel mixers for the additional prevention of sediment deposits in crude oil or storage tanks and for mixing different storage products:
  • Hand-swivel​
  • Mechanical swivel
  • automatic swivel
  • Different types of automatic swiveling are available, ranging from simple, continuous swiveling to PLC-controlled swiveling with position detection and program control.​
  • High-temperature version. This can be used up to 220°C (428°F, 493.15°K), e.g. for bitumen
  • Low-noise mixers. 
  • Double mechanical seal version for all agitators.
  • Special sizes and options on request.


All mixers are also available with ATEX identification EX X II 2G EEx c, k, d T4 according to the explosion protection guideline 2014/34 EC (Zone 1).

Prema-Service tank mixer fixed design

Compact design

The compact design allows for flange mounting only. 

No additional supporting is required.

Prema-Service shut-off device for maintenance to the tank mixers

Shut-off device

The shut-off device enables the operator to pull the machine in a locking position.

In this position, the mechanical seal can be changed, and other maintenance activities can be done while the tank is filled with product.

Cartridge type mechanical seal for industrial tank mixers

Mechanical seal

The cartridge type mechanical seal is designed for a long life, and excellent performance.

Prema-Service brand mechanical seals are exclusively used in our machines.

rvs 316 custom propellor for side entry industrial tank mixers

Marine high-flow propellor

Our marine-grade welded propellors are custom made for each job. By not using standardized propellors we create maximum efficiency and the highest possible pumping capacity, that result in minimizing the required mixing time. 

Prema-Service tank mixer fixed design


The special design of the gearbox offers unique advantages.

– Undivided shaft

– Quiet running

– Low wear and low maintenance

– Highest safety against overload

Additional equipment

In order to be able to detect problems during operation, continuous monitoring of the most important parameters is recommended.

– Vibration monitoring

– Temperature monitoring

– Leakage control unit

– Level sensor for sealing system