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Delivering safe and consistent food quality steam

14 February 2021

Steam offers an energy efficient and flexible way to transfer heat in many food and drink processes and it is routinely used in direct contact with end products intended for consumption and sterilisation. However, but this can raise quality or food safety issues if the correct standard of steam is not used. 

Spirax Sarco has developed a clean steam generator which is designed specifically to deliver safe and consistent food quality steam, specifically for direct injection processes and sterilise-in-place (SIP) applications. 

To generate clean steam, controlled chemical free feedwater namely reversed osmosis (RO) is fed through a secondary 316L stainless steel generator to ensure steam quality is kept at the appropriate levels. Certified and compliant with the Food Contact Materials regulation EC1935/2004, the generator keeps the appropriate steam quality and purity required at a consistent level. By controlling the feedwater quality at source, the generator removes the reliance on filtered steam, which only partially eliminates the risk of contaminates from steam finding their way into the final product. 

With increasing hygiene and safety concerns amongst major retailers and consumers around the use of plant and filtered steam in direct contact with food or drink or for sterilisation purposes, food and drink manufacturers can look to alleviate those concerns by adopting good manufacturing practice and switching to clean steam generation. 

“Clean steam has the potential to make a real impact on what matters most to the consumer – the safety and taste of the end product. Through the use of steam engineering best practice Spirax Sarco has successfully developed a new compact clean steam generator specific to the food and drink sector. Extensive testing and in-depth market research has enabled us to develop this solution that delivers safe and consistent food quality steam at all times,” said Michael Hyde, food and drink business development manager at Spirax Sarco.

A guide to using a clean steam process in your plant is available to download at

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