Werner Hartmann, Senior founded the company in 1946 in Burgdorf-Ehlershausen. Today’s HARTMANN VALVES GmbH belongs to the leading manufacturers in the areas of ball valves, pigging valves, and well flanges. A worldwide presence in the crude oil, natural gas, geothermal, petrochemical, mining, food industry and power plant technology is our reference. Construction, manufacture, production, and tests are performed exclusively at our factories in Celle and Ehlershausen. We entered the 90s with new concepts, and served markets directly. Large investments into the product development guaranteed our success. In 1998 we took over the rights of the former CM Celler Maschinenfabrik, and Wellhead was developed into a competitive product line. Today we enjoy the acceptance of our customers.