Hartmann Valves has expanded its portfolio beyond the oil and gas industry to serve additional applications in the energy sector. Today, its metal-seated ball valves and wellhead systems are also used in geothermal energy, energy storage, and hydrogen and CO₂ projects. In the year of its 80th anniversary, the family-owned company is among the exhibitors at VALVE WORLD EXPO 2026.
As energy markets have changed, the range of applications served by Hartmann Valves has also expanded. Expertise gained in the oil and gas industry was initially applied to the chemical industry, energy storage, and geothermal energy. The expansion of hydrogen projects and carbon capture, utilization, and storage (CCUS) technologies brought additional requirements.
Across these applications, the focus is on pressure and temperature resistance and the required leak tightness. Hydrogen and CO₂ also entail fluid-specific requirements for materials, sealing systems, and component design. Hartmann Valves therefore develops customized solutions in addition to standardized products.
From Gate Valves to Metal-Seated Ball Valves
Werner Hartmann founded the company in 1946 in Ehlershausen. Gate valves for the oil and gas industry became part of the product range in 1949. Proprietary ball valve designs followed in the 1950s; related patents were filed and granted in Germany, Austria, and the United States between 1956 and 1959. Over the following decades, the company continued to develop its designs, sealing systems, and manufacturing processes.
Metal-seated ball valves remain a core part of the portfolio. They are used particularly in applications with demanding requirements for valve pressure resistance, temperature resistance, and leak tightness.
Geothermal Energy as a Long-Standing Application
Geothermal energy has been one of the corporate group’s areas of application for decades. As early as the late 1970s, the company then known as Celler Maschinenfabrik was involved in a geothermal project in Bruchsal. The wellhead installed there was later reused when the facility was brought back into operation.
From a technical perspective, there are parallels with conventional subsurface applications: High pressures and temperatures, along with the properties of the produced fluids, determine the requirements for materials, sealing systems, and design. Geothermal projects use both project-specific wellhead systems and metal-seated ball valves.
80 Years of Hartmann Valves
Hartmann Valves celebrated its 80th anniversary in Ehlershausen from August 20 to 22, 2026. Today, Werner, Christian, and Martin Hartmann represent the third generation to lead the family-owned company. Around 230 employees work at its Burgdorf-Ehlershausen and Celle locations.
Hartmann Valves will exhibit at VALVE WORLD EXPO, taking place December 1–3, 2026, in Düsseldorf. Visitors can find the company in Hall 1, Booth B75. Further information is available in the company’s VALVE WORLD EXPO exhibitor profile.
