“We branched out into the sectors that others had avoided”, says company founder Walter Schumacher. Together with his son, Stefan, he runs the company Walter Schumacher Impuls Technik GmbH, (SIT). The company specialises in the development and production of special valves and stand-alone valve solutions, which are used in numerous industries. The product range includes valves for all types of media, ranging from high-vacuum valves to high-pressure valves rated up to 800 bar. One of these special solutions made from aluminium consists of several helium valves, various sensors, pressure relief valves and throttles, which control and regulate various pressures. The emphasis is on the surface quality of the mating surfaces, which ensures functionality in high-technology analysis. SIT achieves a surface quality of Ra 0.012 µm (4.724409e-7") using a diamond tool from Paul Horn GmbH and by having invested in a new turning/milling centre from the machine manufacturer Mazak.