KW Designed Solutions are experts in engineering Pressure Vessels with integral high-pressure agitation and mixing systems, used for the following purposes: -

  • To establish an even distribution of mixed particles within the test media for chemical mixing, blending or environmental simulation.
  • To improve the heat transfer coefficient of the test media by forced convection - reducing the time required to heat up or cool down the media and thus improving the efficiency of the heating or cooling system.
  • To allow finer control of the temperature gradient throughout the Vessel, ensuring that the temperature of the DUT remains within a tightly specified tolerance band throughout the entire test period.

KW Designed Solutions has a range of high-pressure Agitation systems on offer that have previously been supplied with various types of Pressure Vessel – each of them bespoke to ensure that the customer’s exacting requirements are met.

The performance & efficiency of the Agitation or Mixing system design can first be proven using Computational Fluid Dynamics (CFD) to ensure that the temperature or particle distribution is in line with the requirements prior to manufacture.



  • Pressure ratings: up to 1400 bar
  • Temperature ratings: -20°C to 350°C
  • To suit vessels: up to Ø600mm & 6m in Length, Horizontal or Vertical Orientation
  • Mounting: Top mounted, Bottom mounted or Horizontally mounted
  • Speeds: 10-4000 rpm (Variable Speed Control)
  • Torque: 1-10Nm
  • Material of construction: Stainless Steels and Corrosion Resistant Alloys (CRA) for use with H2S Sour Gas
  • Ceramic Bearings and FFKM seals
  • Propeller, turbine and paddle blade Agitation for high & low viscosity liquids and gases
  • Sparge pipe style designs for simulating subsea environments with sea water, sand and silt
  • Hermetically sealed Glandless Magnetic Drives


  • Dramatically improves the Heat Transfer rate; reducing the time taken to heat up or cool down the test media whilst also reducing the temperature gradient across the test media – this ensures that the DUT is evenly subjected to the same temperature.
  • Improves the efficiency of heating and cooling systems by reducing power consumption
  • Provides highly efficient method of promoting chemical reactions in Reactors and Autoclaves
  • Cost effective way to accurately replicate turbid subsea conditions for subsea simulation testing
  • Clever Integration removes the need for using expensive, lower spec agitators not designed specifically to suit the testing requirements

Applications and Customer Uses


Pressure Vessels with integrated Agitation have proven to be a common choice for our customers who work within the Subsea and Materials Research industry sectors.

Whilst most Mixing and Stirring applications are known to improve heating and cooling efficiency within test systems, they also create an even temperature distribution of test media within the Vessel and test platform.

However, for our customers who manufacture Subsea equipment, our Agitation systems allow them to create the ideal subsea testing environment, creating an even distribution of sand and silt throughout the Vessel whilst conducting wet-mate electrical connector testing (mate/demate functionality).  This added functionality has vastly improved the realism of our customers testing platforms to meet the most stringent testing demands.

Autoclaves supplied to clients in Material Research Laboratories performing ASTM G-38 type Stress Corrosion Cracking (SCC) tests in Sour Gas H2S require our High Temp, NACE compliant Agitation Systems to enhance testing conditions whilst operating at high pressure and high temperature in the most hostile and corrosive environment.

Project Examples

Project examples to follow

kw designed solutions

Tel: +44 (0) 1257 474 507

KW Designed Solutions Ltd, KW Group, Drumhead Road, Chorley North Business Park, Chorley, Lancashire PR6 7DE. United Kingdom.

Designed and manufactured in the UK Designed and manufactured in the UK.