<https://www.k-vt.de/en/kvt-home/kvt-pinch-valve/pinch-valves-pipe-ends/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.k-vt.de/en/kvt-home/kvt-pinch-valve/pinch-valves-pipe-ends/>