In gravity filters, the underdrain is one of the most important components contributing to overall system performance and operation — whether a new filter design or retrofitting of an existing filter. De Nora Water Technologies offer DE NORA TETRA™ LP Blocks dual parallel lateral underdrain and the DE NORA TETRA U Blocks  underdrain for drinking water and desalination pre-treatment applications.

De Nora Water Technologies UK Services Ltd

Founded in 1923 by Oronzio De Nora to pursue the commercial exploitation of its first patent the company evolved over time to become a multinational enterprise with manufacturing facilities close to all its customers. the loyalty to electrochemistry is the undisputed legacy of the company, recognized as an innovating company thanks to continuous improvement of its products and services. De Nora is a global company and a leading designer, manufacturer and supplier of electrodes, coatings and complete electrochemical solutions to serve diversified markets.