Pure Steam Generation Systems

Puretech offers world leading solutions for Pure Steam Generation. Our steam systems, like our Pure Water & WFI systems, meet the standards expected in the pharmaceutical market.

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Pure Steam

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Puretech steam generation (PSG) systems take treated water, free from volatile additives, and purify it to the required specification for the application. If clean steam is required an Oasys unit is used and if pure steam is required a Genesys WFI unit is used to provide water purified to comply with the pharmacopoeia parameters for injectable quality water.

The purified water or WFI is evaporated in a steam generator – producing either clean or pure steam.

Operation of Puretech’s steam generation systems is fully automated. A programmable controller, which can be monitored and controlled via a touch screen control panel, manages the equipment via sensors and provides warning signals and alarms.

All units are fully pre-validated in the factory to test its compliance with EN 258 (HTM 2010) standards in terms of saturation, heating and non-condensable gas levels.

The main applications for pure steam are in the pharmaceutical and biotechnology sectors. Clean steam is very efficient for sterilising due to the double effect produced by the heat of condensation (latent heat transfer) and the humidity generated, with wetting resulting in cellular wall pore opening and heat cell protein coagulation or denaturalisation, which is lethal. This makes it ideal for autoclaves,  cleaning processing equipment and conditioning materials.

Clean and pure steam can be piped via a system of stainless-steel orbitally welded pipes to the point of use. With all Puretech purified water and clean steam systems the stainless-steel pipework is orbitally welded to give the cleanest surface possible internally and externally and to give the maximum possible integrity to the joints. An argon purge of the system is used to prevent oxidisation internally and a borescope is used to check the system prior to commissioning.

Pure Steam Generation

Our Pure Steam Generators produce dry, saturated steam, suitable for sterilisation of pharmaceutical production plants, for direct contact with Active Pharmaceutical Ingredients (API’s), for Parenteral and Non-Parenteral dosage form applications. The steam, when condensed, meets USP & EP requirements for Water for Injection. The steam is purified using centrifugal and gravity separation methods.

cGMP, ASME and PED standards are our baseline criteria for our Pure Steam Generators design and construction, materials and instruments are certified.

  • The evaporation column is designed to minimize steam speed to avoid the carry-over of water droplets, which are separated from the steam by means of a special labyrinth separator.
  • A Double Tube Sheet Heat Exchanger provides heating of pre-treated feed water above the boiling temperature, generating pure steam which expands into the evaporation column. Heating medium in the DTS Heat Exchanger is typically industrial steam at 100 to 120 psig (6 to 8 barg).
  • Pure steam pressure is maintained by an electronic control system, modulating the supply steam control valve and monitoring the evaporator feed water.
  • The system must be fed with Purified Water and heated using industrial steam, however heating can also be achieved using superheated water or with direct electrical power supply.
  • Capacities range from 20 to 8,000 kg/h.


Puretech’s Kettle Pure Steam Generators, provided with a horizontal evaporation chamber with kettle end, are also available for sites with space restrictions and cases that require a high capacity of steam.

KOMB System Multi Effect Still + PS Generator

Our KOMB system is a unique design for the simultaneous production of WFI and PS, combining functions of a Multiple Effect Distiller (MED) and of a Pure Steam Generator (PSG) on a single skid, reducing the space requirements and cost.

A single SCADA system controls both the MED and PSG which is capable of providing separate or simultaneous production of Water for Injection and/or Pure Steam.

Related Products

Puretech’s innovative generation systems, Oasys and Genesys WFI,  facilitate the production of purified and WFI, complying with all relevant pharmacopeia standards.

Oasys (chemical sanitisation)

Oasys is a chemical sanitisation system that provides a single source solution for taking raw water purified water. Find out more.

Genesys WFI (thermal sanitisation)

Genesys is the ultimate water purification system – a thermal sanitisation system that provides a single source solution for taking raw water to WFI quality.

Genesys and Oasys were industry firsts in offering start to finish purification in one unit and established Puretech as the recognised market leader in this field. We strive to maintain this position through sustained innovation and faultless delivery.

Service & Maintenance

Puretech have nearly 30 years’ experience of servicing and maintaining pharmaceutical, validated water systems.

Our service contracts are tailored to our clients individual needs and the service is expertly provided through our network of experienced and qualified engineers.

We can offer contracts of 1-5 years with the numbers of visits specified by you. All of our contracts as standard receive 24/7 telephone support, recommended spare parts list and a detailed service report to ensure you comply with all regulatory body standards.

Let’s Discuss How We Can Work Together!

We would welcome the opportunity to discuss how Puretech can become your trusted partner. We’d love to schedule a meeting to explore potential synergies and discuss how we can support your design projects with our expertise.

Please contact us to schedule a meeting: