Hartmann Valves GmbH is one of the leading manufacturers of ball valves, pigging valves and wellheads. A worldwide presence in the fields of mineral oil, natural gas, petrochemicals, power plant technology, geothermal energy and other renewable energies – these are our references. Design, assembly and tests are carried out solely in our factories in Celle and Burgdorf-Ehlershausen. We foster active dialogue with our customers, fulfil special requirements and are seen, with our many years of experience, as a proficient partner.