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McLanahan to acquire Diefenbach

Diefenbach filter press

Italian filter press and thickener manufacturer to become part of McLanahan family of companies

McLANAHAN Corporation have signed an agreement to acquire Diefenbach srl, an Italian manufacturer of filter presses and thickeners based in Medolago, Italy. The two companies have been working together on projects since 2013 and expect the acquisition to close during the second quarter of 2023.

Diefenbach have been one of the leaders in liquid-solid separation using filter presses since their founding in 1907, when the company was focused on producing presses for the olive oil industry. In the 1950s, Diefenbach expanded into the recycling and filtration of industrial wastewater. Since then, the company has sold thousands of machines and has extensive experience in selling and manufacturing this equipment for the mining and aggregate industries.


As the focus on a circular economy and recycling water from industrial processes becomes more and more prominent on a global scale, McLanahan Corporation were looking for a partner to continue expanding their offerings in this space. They say the acquisition of Diefenbach will allow them to ensure they are able to offer a more comprehensive solution to customers and industries around the world in support of changing requirements for processing.

‘As we look toward the future, we see a growing need for wastewater and tailings management in a variety of industries as part of the circular economy,’ said Cory Jenson, executive vice-president of sales and business development at McLanahan.

‘Every industry is being challenged to use less and less water and to recycle the water they are using. This acquisition offers significant synergies to McLanahan’s existing tailings solutions in mining and aggregates, which continue to remain a critical part of McLanahan’s product offerings. This new partnership allows us to offer a more competitive solution to our tailings partners around the world.’

Diefenbach will continue to operate as an independent brand in the marketplace, focusing on and continuing to support their core industries, markets and customers around the world. For the aggregate sector, Diefenbach will be partnering with Eagle Iron Works (EIW), another brand in the McLanahan family of companies, to offer a proven line of filter presses and thickeners to EIW customers looking to purchase a complete tailings and water-management solution from one vendor.


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