Bilfinger Water Technologies specialises is water and wastewater management, screening and filtration technologies for separating solids from liquids and gases, as well as vacuum technology. Products and services are marketed under the Airvac, Diemme Filtration, Geiger, Johnson Screens, Noggerath, Passavant and Roediger brand names.

Diemme Filtration piston and piston-membrane pumps are manufactured for filter press feeding and are suitable for pumping particularly abrasive or corrosive liquids, whose chemical-physical characteristics are variable.
 
The Bilfinger Water Technologies division has about 1600 employees and had a turnover of approximately €300 million in 2015.
 
The sale will allow Bilfinger to focus its business on the industrial and real-estate sectors. Bilfinger will receive net proceeds of approximately €200 million from the sale of its Water Technologies business.
 
“We are pleased that our successful water business has found such a financially strong and long-term oriented buyer,” said Bilfinger executive board chairman Per H Utnegaard. “The move to a company in which water technology is the focus of business operations opens up excellent development prospects for Water Technologies.”