After Leushuis Projects & Engineering, specialized in liquid flow process systems, had acquired X-Flow shares, the two companies cooperated closely in the development and manufacturing of membrane products for different applications, notably a better and cleaner beer brewing solution.

In 1997, Norit purchased Leushuis as a strategic add-on to their activated carbon business. At the time of the acquisition, Leushuis owned about 80 percent of X-Flow. Norit and X-Flow were a perfect match, as activated carbon and membranes both play important parts in the water, food & beverage and pharmaceutical industries. Later that same year, Norit became the sole shareholder in X-Flow BV.

With customers in more than 150 countries, Norit had developed into a multinational company with a strong focus on innovation. As a membrane manufacturer, X-Flow became part of the Clean Process Technologies (CPT) division of Norit Holding B.V.

In 2000, Norit acquired STORK membranes and integrated STORK’s membrane portfolio in the X-Flow product range.

In April 2011, Global Water Intelligence selected Norit as Water Technology Company of the Year. Norit had been nominated for breathing new life into activated carbon, a proven technology for more than a century, and for taking the new technology of ultrafiltration further than ever before.

 In May 2011, Pentair Inc. (founded in 1966) acquired X-Flow. Pentair is a global diversified industrial company headquartered in Minneapolis, USA.

With X-Flow, Pentair is todays world’s leading ultrafiltration membrane manufacturer. X-Flow membrane elements are found in processing installations all over the world and virtually every landmark industrial project with membrane technology, either installed in Original Equipment Manufacturer (OEM) systems, or in Pentair’s own systems and solutions.

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