Conventional piston pumps were threatening quality at an Anheuser-Busch InBev brewery. The site, which produces brands including Stella Artois and Boddingtons, is one of the most productive in Europe. However, piston pumps were providing the opportunity for dissolved oxygen (DO) to infiltrate the beer during the dosing of kieselguhr, a sedimentary mineral in slurry form that creates an important and necessary layer on the filter. Unfortunately the stainless steel non-return valves on the discharge side of the piston pumps began to stick due to the corrosive nature of kieselghur. As a result, the brewery would end up maintaining or replacing the pumps, which would inevitably expose the beer to atmosphere. Even the slightest traces of DO in beer can change its flavour, making it taste stale. The brewery required a new method that would allow it to maintain rigorous DO levels of less than 10 ppb (parts per billion) over the entire process. The solution: A Bredel 25 hose pump was introduced to one of the brewery’s three filter mains. With the peristaltic process there is no way to introduce oxygen to the process. Click Here For Complete Market Text
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