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Seals Medium & Seals Coffee (extract)

Coffee (extract)

The soluble components of coffee are extracted from the ground coffee, whose grind (approx. 2 mm) is not comparable with that used in commercially available coffee machines, in an extraction plant. Such an extraction plant works with water temperatures of up to 200 °C, for which a pressure of up to 20 bar is required so that the water does not evaporate. The ground coffee is placed in so-called percolators through which the hot water flows, dissolving out the soluble components of the coffee. The coffee extract thus obtained is concentrated in an evaporation plant and then dried.

For such applications, STB GmbH has built mechanical seals that are suitable for pressure reversal.

Even in case of a blocking pressure loss, the mechanical seal remains closed. Thus, minimizing the risk of the fluid.

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