Mankenberg GmbH is a manufacturer of industrial valves and supplies to various industries worldwide. The company's headquarters are located in Lübeck (Schleswig-Holstein, Germany). The German company focuses on the production of self-acting control valves (pressure and level control) and, in addition to standard products, specialises in customised solutions. Axel Weidner, great-grandson of the company founder, and Dr. Stefan Nehlsen are jointly responsible for the management.