Site Overlay


Logo for Fedegari
Fedegari Air Steam Mixture (Counter-Pressure) Sterilisers – The FOA Range
Applications Food, Bio-pharmaceutical
Loads Canned food, Large volume parenterals, Blood bags, Syringes
Processes Sterilization

Sterilisation of aqueous solutions in sealed containers (such as LVPs – Large Volume Parenterals, vials, PFS – Pre-filled syringes, blister packs, etc. ) share a common problem: the pressure inside the primary container is higher than the pressure of saturated steam outside at the same temperature. This can affect the product and/or the container itself.

The Fedegari unique approach to counterpressure sterilization:

  • Flexibility: control of critical process parameters designed to assure the highest flexibility of the sterilization cycle and to prevent any undesired deformation/damage of the containers, while providing the desired thermal treatment.
  • Total control: temperature and total pressure control (air + steam). A flow deflector and one or more magnetic drives guarantee a uniform mixture spread.
  • Process optimization: load emerges dry and ready for the next process steps.
  • Easy validation & integrationThema4 process controller is pre-validated according to GAMP5 and in compliance with 21 CRF Part 11, thus resulting in shortest qualification time and minimizing project risks. Open system architecture that can be integrated with SCADA system and other Fedegari machines.
  • Highest productivity: Fedegari R&D laboratory is available to develop the best treatment solution for your specific needs. We run tests with different loads and requirements.


  • Besides the standard versions from 830 to 14.800 liters, loading capacity is fully customizable according to customer needs.
  • Chamber internal surface electropolished with a roughness Ra <0,4 μm.
  • One or two doors with vertical or hinged opening systems to cope with available space in the smartest possible way.
  • 5 PT100 RTD probes for temperature control (2 fixed – in the filter and discharge – and 3 flexible for the load).
  • Automatic sterilization of the air filter with fixed temperature probe.
  • 2 validation ports.
  • Fedegari exclusive patented door gaskets assure 100% tightness.
  • Piping and valves in stainless steel AISI 316L.
  • Patented magnetic drives remove any tightness problem deriving from seal wear, and minimizes maintenance, without requiring any lubrication.


FOA steam air mixture sterilizer is suitable for:

  • Sterilization of parenteral solutions, liquids in sealed containers not deformable (eg. glass vials) and liquids in heat-sensitive sealed containers (eg. plastic bags or bottles).
  • Terminal sterilization of pre-filled syringes (PFSs).



The load is held in rotation thanks to a special rotating drum inside the chamber. The rotation drum has a magnetic coupling and is adjustable in speed, direction of rotation and intermittently. This system finds application in the treatment of suspensions and emulsions and ensures a better performance of the tightness tests for ampoules under vacuum and a more homogeneous heat transmission in the load.


  • ISO Standard: 9001:2015, 13485:2016
  • European directives: 2014/68/EU – Pressure Equipment Device (PED), 2006/42/EC – Safety of machinery, 2014/30/EU – Electromagnetic compatibility, 2014/35/EU – Low-voltage device, 2007/47/EC – Medical device
  • European standard: EN ISO 12100, EN ISO 13857, EN ISO 13849-1, EN 55011, EN 61000-4-2, EN 61000-4-4, EN 61000-6-2, EN 61000-6-4, EN 60204-1
  • ASME: Stamp R, Stamp S, Stamp U
  • Chinese standard: SELO
  • Swiss standard: SR 930.114
  • FDA
  • GMP

Click here to view the FOA brochure


For more information:

Contact us Here

Telephone SteriTech in Ireland: +353 (0) 7191 38920 

Telephone SteriTech in the UK:  +44 (0)1293 824 400