The experience of Guichon Valves in the design of cryogenic valves (-196°C) is recognized worldwide since more than 20 years. The company has developed and industrialized cryogenic sectioning equipments based on technologies of gate valves (models agreed by Air Liquide), metal seated butterfly valves and ball valves. These equipments have various applications in the sector of liquefied gases and also in the fine chemicals and in nuclear submarines.