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  • Butterfly valves for food applications

    At the beginning of May 2019, KSB SAS, a member of the KSB Group, launched a new type of liner for its ISORIA butterfly valve type series. It is manufactured from hydrogenated nitrile butadiene rubber (HNBR) and certified in accordance with the requirements of the European Food Contact Materials Regulation (EC) 1935/2004. This new approval extends the range of applications for the type series, which has already been approved by the FDA (USA, Food and Drug Administration).

    The NH liner (HNBR) is suitable for all food applications in which animal, vegetable or mineral oils and acidic liquids are used. It is resistant to hydrocarbons and also suitable for use in solids-laden liquids as it is very abrasion-resistant. The selective hydrogenation of nitrile rubber (NBR) significantly increases the temperature resistance of HNBR. Butterfly valves equipped with liners manufactured according to the new formulation (NH) can be used in liquid fluids up to a maximum temperature of 150 °C.

    The soft-seated centred-disc ISORIA type series is available in nominal sizes DN 40 to DN 1000. KSB also manufactures other liner materials for food applications that comply with the various requirements of Regulation (EC) 1935/2004 and the FDA. For example, KSB provides liners made of EPDM and white nitrile for the beverage industry.

    The KSB Group is one of the few valve manufacturers in the world to develop and produce its own elastomers.

    KSB ILN pump The ISORIA butterfly valves are now available with an oil-resistant liner for food applications.? ?KSB SE & Co. KGaA, Frankenthal

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    Wilfried Sauer


    +49 6233 86-1140

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    Christoph P. Pauly


    +49 6233 86-3702
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