In complex plants with multiple fluid systems, many interconnecting units holding fluids have isolation valves between them.
2.
Thanks to his proposal and support, on board the Space Shuttle Discovery, Node 2-the interconnecting unit developed in Italy by Thales Alenia Space-and the ESA, the Italian Paolo Nespoli and other astronauts started their journey towards the International Space Station ( ISS ) bringing with them delicious Italian food to offer to the other astronauts on the Station in orbit.